Magnesium cyanamide and preparation method and application thereof
By ball milling the elemental magnesium and melamine in an argon protective atmosphere, the pure phase magnesium cyanamide was successfully prepared, which solved the problems of complex preparation methods and difficult to achieve pure phases in the prior art, and achieved efficient and low-cost preparation of magnesium cyanamide, which expanded its application potential in multiple fields.
Patent Information
- Application Number
- CN202510006482.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-05-13
AI Technical Summary
In the prior art, the preparation method of magnesium cyanamide (MgCN2) is complex and requires high-temperature heat treatment. The material produced is not a pure phase, but is a mixture of MgCN2 and MgO, which is difficult to completely separate, resulting in a lack of relevant application research.
By mixing elemental magnesium and melamine, a ball abrasive was obtained and ball milled in an argon protective atmosphere to obtain pure phase magnesium cyanamide. This method is simple to operate, low cost, no heat treatment required, and is suitable for batch preparation.
The high-purity preparation of magnesium cyanamide is achieved, the preparation process is simplified, energy consumption and production costs are reduced, technical solutions are provided suitable for mass production, and the application of it in the fields of energy storage, semiconductors and superconducting materials is laid.
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Figure CN119976888A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of metal cyanamide materials, and specifically relates to magnesium cyanamide and a preparation method and application thereof. Background Art
[0002] Metal cyanamides are a class of compounds starting with [NCN] 2- A polyatomic ionic compound in which metal cyanamides are anions coordinated with metal cations including alkali metals, alkaline earth metals, rare earth metals and transition metals. In recent years, metal cyanamides have shown application prospects in many fields, including solid-state luminescence, photo / electrocatalysis, and electrochemical energy storage.
[0003] Magnesium cyanamide (MgCN2) has the characteristics of ionic layered structure and wide band gap, and is considered to be a potential application material in the fields of energy storage, semiconductors, catalysis, superconductors, etc., but there are only a few related reports. In 1994, Berger and Schnick successfully synthesized the material for the first time. They pre-fired Mg3N2 and C3N3(NH2)3 in an argon atmosphere at 220°C for 2 days, and then raised the temperature to 750°C and continued to fire for 2 days to finally obtain MgCN2. Since then, until 2021, Wang et al. prepared a MgCN2 / MgO composite material containing MgCN2. They mixed melamine and alkaline magnesium carbonate in a certain proportion and calcined them at a high temperature of 550°C for 2 hours to obtain the target product, but this preparation method is relatively complicated and requires high-temperature heat treatment. At the same time, the prepared material is not a pure phase, but a mixture of MgCN2 and MgO, and the two are difficult to completely separate. In addition to the above, there are currently no more reports on the actual synthesis of MgCN2. It can be seen that although MgCN2 has unique physical and chemical properties, it is limited by the lack of relevant preparation methods, resulting in a lack of relevant application research of MgCN2. Therefore, the relevant preparation technology of MgCN2 needs further research. Summary of the invention
[0004] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present application proposes a magnesium cyanamide which is simple to operate, low in cost, has a high product purity or is suitable for batch preparation, and a preparation method and application thereof.
[0005] The first aspect of the present application proposes a method for preparing magnesium cyanamide, comprising:
[0006] Mixing elemental magnesium and melamine to obtain a ball mill;
[0007] The ball mill material and the ball mill medium are mixed and ball milled to obtain magnesium cyanamide.
[0008] The above preparation method is extremely simple to operate, does not require any heat treatment, can be directly prepared at room temperature, has an extremely short preparation cycle, can be completed in just a few hours, and has low raw material prices, making it suitable for batch preparation.
[0009] In some embodiments, the elemental magnesium includes magnesium powder, thereby improving ball milling efficiency and reducing reaction time.
[0010] In some embodiments, the molar ratio of the elemental magnesium to the melamine is 2:1 to 4:1. This allows the elemental magnesium and melamine to react more fully, thus avoiding the waste of raw materials.
[0011] In some embodiments, the ball milling method includes at least one of planetary ball milling and oscillating ball milling.
[0012] In some embodiments, the ball milling method is the planetary ball milling, the ball-to-material ratio of the ball milling is 20:1 to 100:1, the rotation speed of the ball milling is 200 rpm to 600 rpm, and the ball milling time is 5 h to 10 h.
[0013] In some embodiments, the ball milling method is the oscillating ball milling, the ball-to-material ratio of the ball milling is 5:1 to 50:1, the rotation speed of the ball milling is 800 rpm to 1230 rpm, and the ball milling time is 2 h to 6 h.
[0014] In some embodiments, the ball milling is performed in an argon protective atmosphere of 0.01 MPa to 3 MPa, thereby reducing the reaction between the product and oxygen in the air and improving the purity of the product.
[0015] The second aspect of the present application provides a magnesium cyanamide, which is prepared by the method described above. The magnesium cyanamide prepared by the method described in the present application is pure phase, free of other impurities, and its electronic structure is a broadband semiconductor material, which has great scientific research value.
[0016] The third aspect of the present application proposes an application of magnesium cyanamide in the fields of energy storage materials, semiconductors, and superconducting materials. Specifically, magnesium cyanamide can be used in the fields of solid-state luminescence, photo / electrocatalysis, and electrochemical energy storage. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is the XRD diagram of magnesium cyanamide in Example 1 of the present application.
[0018] Figure 2 This is the SEM image of magnesium cyanamide in Example 1 of the present application. DETAILED DESCRIPTION
[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, but cannot be understood as limiting the present application.
[0020] The first aspect of the present application proposes a method for preparing magnesium cyanamide, comprising:
[0021] S1: Mixing elemental magnesium and melamine to obtain a ball mill material.
[0022] In some embodiments, the elemental magnesium includes magnesium powder, which is beneficial to improve ball milling efficiency and reduce reaction time.
[0023] In some embodiments, the molar ratio of the elemental magnesium to the melamine is 2:1 to 4:1, for example, 2:1, 3:1 or 4:1, etc. Within the above molar ratio range, the elemental magnesium and melamine can react more fully to avoid the waste of raw materials.
[0024] It should be noted that the mixing method of elemental magnesium and melamine can be to mix the elemental magnesium and melamine and then add them to the ball mill together, or to add the elemental magnesium and melamine to the ball mill separately and then mix them. The mixing method is not particularly limited as long as the two can be mixed to react.
[0025] S2: The ball mill material and the ball mill medium are mixed and ball milled to obtain magnesium cyanamide.
[0026] It should be noted that the ball mill material and the ball mill medium can be mixed by adding the mixed ball mill material and the ball mill medium into a ball mill jar for ball milling, or the ball mill material and the ball mill medium can be added into the ball mill jar separately for ball milling. The mixing method is not particularly limited as long as the two can be mixed and then ball milled.
[0027] In some embodiments, the ball milling method includes at least one of planetary ball milling and oscillating ball milling.
[0028] In some embodiments, the ball milling method is planetary ball milling, the ball-to-material ratio of the ball mill is 20:1 to 100:1 (such as 20:1, 30:1, 40:1, 50:1, 60:1, 70:1, 80:1, 90:1 or 100:1, etc.), the rotation speed of the ball mill is 200rpm to 600rpm (such as 200rpm, 300rpm, 400rpm, 500rpm or 600rpm, etc.), and the ball milling time is 5h to 10h (such as 5h, 6h, 7h, 8h, 9h or 10h, etc.).
[0029] In some embodiments, the ball milling method is oscillating ball milling, the ball-to-material ratio of the ball milling is 5:1 to 50:1 (5:1, 10:1, 20:1, 30:1, 40:1 or 50:1, etc.), the rotation speed of the ball milling is 800rpm to 1230rpm (such as 800rpm, 900rpm, 1000rpm, 1100rpm or 1230rpm, etc.), and the ball milling time is 2h to 6h (such as 2h, 3h, 4h, 5h or 6h, etc.).
[0030] In some embodiments, the ball milling is performed intermittently, with a pause of 5 to 60 minutes after each ball milling of 5 to 60 minutes. In other embodiments, the ball milling can be performed for 5 minutes, 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, or 60 minutes, etc., and then paused for 5 minutes, 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, or 60 minutes.
[0031] In some embodiments, the ball milling is performed in an argon protective atmosphere of 0.01 MPa to 3 MPa, for example, 0.01 MPa, 0.1 MPa, 0.5 MPa, 1 MPa, 2 MPa or 3 MPa, etc. This can reduce the reaction between the product and oxygen in the air and improve the purity of the product.
[0032] In some embodiments, the ball milling is performed at room temperature; in other embodiments, the ball milling temperature may be 15° C. to 35° C., for example, 15° C., 20° C., 25° C., 30° C. or 35° C., etc. This can reduce energy consumption and production costs.
[0033] In general, on the one hand, the present application guides the direct reaction of magnesium powder and melamine by solid-phase ball milling, and synthesizes magnesium cyanamide by in-situ reaction. The raw materials required for the reaction are simple, easy to obtain, and low in cost. On the other hand, the preparation process of magnesium cyanamide of the present application is simple, the production cycle is short, the controllability is strong, no high-temperature heat treatment is required, and no additional heat source needs to be introduced throughout the process. The energy consumption is low, the cost is low, no waste liquid is generated during the production process, and zero waste discharge can be achieved.
[0034] The second aspect of the present application provides a magnesium cyanamide, which is prepared by the method described above. The magnesium cyanamide prepared by the method described in the present application is pure phase, free of other impurities, and its electronic structure is a broadband semiconductor material, which has great scientific research value.
[0035] The third aspect of the present application proposes an application of magnesium cyanamide in the fields of energy storage materials, semiconductors, and superconducting materials. Specifically, magnesium cyanamide can be used in the fields of solid-state luminescence, photo / electrocatalysis, and electrochemical energy storage.
[0036] The embodiments of the present application are described in detail below.
[0037] Example 1
[0038] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 3:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1100 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0039] The X-ray diffraction (XRD) pattern of the magnesium cyanamide material of this embodiment is as follows: Figure 1 As shown; Scanning electron microscope (SEM) image as shown Figure 2 shown.
[0040] Depend on Figure 1 The characteristic peak of magnesium cyanamide can be observed, that is, the final product of this embodiment is magnesium cyanamide material.
[0041] Example 2
[0042] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 5:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is carried out in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0043] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0044] Example 3
[0045] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0046] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0047] Example 4
[0048] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm. The mixture was ball milled in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0049] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0050] Example 5
[0051] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm. The ball mill was ball milled in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0052] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0053] Example 6
[0054] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0055] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0056] Example 7
[0057] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0058] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0059] Example 8
[0060] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is carried out in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0061] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0062] Example 9
[0063] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0064] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0065] Example 10
[0066] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 200 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0067] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0068] Embodiment 11
[0069] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm. The mixture was ball milled in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0070] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0071] Example 12
[0072] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0073] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0074] Embodiment 13
[0075] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0076] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0077] Embodiment 14
[0078] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0079] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0080] Embodiment 15
[0081] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0082] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0083] Example 16
[0084] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0085] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0086] Embodiment 17
[0087] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0088] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0089] Embodiment 18
[0090] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm. The mixture was ball milled in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0091] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0092] Embodiment 19
[0093] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0094] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0095] Embodiment 20
[0096] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm, and ball milling was carried out in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0097] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0098] Embodiment 21
[0099] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0100] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0101] Embodiment 22
[0102] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0103] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0104] Embodiment 23
[0105] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0106] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0107] Embodiment 24
[0108] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is carried out in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0109] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0110] Embodiment 25
[0111] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0112] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0113] Embodiment 26
[0114] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 200 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0115] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0116] Embodiment 27
[0117] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0118] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0119] Embodiment 28
[0120] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0121] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0122] Embodiment 29
[0123] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0124] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0125] Embodiment 30
[0126] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0127] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0128] Embodiment 31
[0129] Argon gas was filled into the glove box until the pressure inside the glove box reached 0.1 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0130] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0131] Embodiment 32
[0132] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0133] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0134] Embodiment 33
[0135] Argon gas is filled into the glove box until the pressure inside the glove box reaches 0.1 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0136] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0137] Embodiment 34
[0138] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa. Then, magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill. Then, a ball milling medium is added in a ball-to-material ratio of 5:1. Then, the ball mill is added into a high-energy swing ball mill. The speed of the ball mill is adjusted to 800 rpm. The mixture is ball milled in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0139] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0140] Embodiment 35
[0141] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0142] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0143] Embodiment 36
[0144] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm, and the mixture was ball milled in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0145] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0146] Embodiment 37
[0147] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0148] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0149] Embodiment 38
[0150] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0151] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0152] Embodiment 39
[0153] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0154] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0155] Embodiment 40
[0156] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is carried out in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0157] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0158] Embodiment 41
[0159] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 1230 rpm, and ball milling is performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0160] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0161] Embodiment 42
[0162] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 200 rpm. The mixture was ball milled in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0163] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0164] Embodiment 43
[0165] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0166] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0167] Embodiment 44
[0168] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0169] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0170] Embodiment 45
[0171] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0172] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0173] Embodiment 46
[0174] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0175] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0176] Embodiment 47
[0177] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 2:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0178] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0179] Embodiment 48
[0180] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0181] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0182] Embodiment 49
[0183] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 2:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0184] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0185] Embodiment 50
[0186] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa. Then, magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill. Then, a ball milling medium is added in a ball-to-material ratio of 5:1. Then, the ball mill is added into a high-energy swing ball mill. The speed of the ball mill is adjusted to 800 rpm. The mixture is ball milled in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0187] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0188] Embodiment 51
[0189] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0190] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0191] Embodiment 52
[0192] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm, and ball milling was carried out in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0193] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0194] Embodiment 53
[0195] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 5:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0196] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0197] Embodiment 54
[0198] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 800 rpm. Ball milling is performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0199] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0200] Embodiment 55
[0201] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 1230 rpm, and ball milling is performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0202] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0203] Embodiment 56
[0204] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0205] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0206] Embodiment 57
[0207] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 1230 rpm, and ball milling was performed in an argon atmosphere for 6 hours to obtain magnesium cyanamide material.
[0208] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0209] Embodiment 58
[0210] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 200 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0211] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0212] Embodiment 59
[0213] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 20:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0214] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0215] Embodiment 60
[0216] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0217] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0218] Embodiment 61
[0219] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 20:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0220] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0221] Embodiment 62
[0222] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 200 rpm, and the mixture was ball milled in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0223] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0224] Embodiment 63
[0225] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0226] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0227] Embodiment 64
[0228] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar in the glove box, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 200 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0229] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0230] Embodiment 65
[0231] Argon gas is filled into the glove box until the pressure inside the glove box reaches 3 MPa, and then magnesium powder and melamine are mixed in a molar ratio of 4:1 and loaded into a ball mill jar, and ball milling media is added in a ball-to-material ratio of 100:1, and then the ball mill jar is added into a high-energy swing ball mill, and the speed of the ball mill is adjusted to 600 rpm. Ball milling is carried out in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0232] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0233] Embodiment 66
[0234] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 200 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0235] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0236] Embodiment 67
[0237] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 5 hours to obtain magnesium cyanamide material.
[0238] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0239] Embodiment 68
[0240] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 100:1, and then the ball mill was added into a planetary ball mill, and the speed of the ball mill was adjusted to 600 rpm, and ball milling was performed in an argon atmosphere for 10 hours to obtain magnesium cyanamide material.
[0241] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0242] Embodiment 69
[0243] Argon gas was filled into the glove box until the pressure inside the glove box reached 3 MPa, and then magnesium powder and melamine were mixed in a molar ratio of 4:1 and loaded into a ball mill, and ball milling media was added in a ball-to-material ratio of 50:1, and then the ball mill was added into a high-energy swing ball mill, and the speed of the ball mill was adjusted to 800 rpm, and ball milling was performed in an argon atmosphere for 2 hours to obtain magnesium cyanamide material.
[0244] After testing, the XRD phase characterization results of the magnesium cyanamide material of this embodiment are very close to those of the magnesium cyanamide material of Example 1.
[0245] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0246] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A method for preparing magnesium cyanamide, characterized in that, include: Mixing elemental magnesium and melamine to obtain a ball mill; The ball mill material and the ball mill medium are mixed and ball milled to obtain magnesium cyanamide.
2. The method according to claim 1, characterized in that: The elemental magnesium includes magnesium powder.
3. The method according to claim 1, characterized in that The molar ratio of the elemental magnesium to the melamine is 2:1 to 4:
1.
4. The method according to claim 1, characterized in that: The ball milling method includes at least one of planetary ball milling and oscillating ball milling.
5. The method according to claim 4, characterized in that The ball milling method is the planetary ball milling, the ball-to-material ratio of the ball milling is 20:1-100:1, the rotation speed of the ball milling is 200rpm-600rpm, and the ball milling time is 5h-10h.
6. The method according to claim 4, characterized in that The ball milling method is the swing ball milling, the ball-to-material ratio of the ball milling is 5:1-50:1, the rotation speed of the ball milling is 800rpm-1230rpm, and the ball milling time is 2h-6h.
7. The method according to claim 1, characterized in that The ball milling is carried out in an argon protective atmosphere of 0.01 MPa to 3 MPa.
8. The method according to claim 1, characterized in that The ball milling was performed at room temperature.
9. A magnesium cyanamide, characterized in that It is prepared by the method according to any one of claims 1 to 8.
10. Use of the magnesium cyanamide according to any one of claims 1 to 9 in the fields of energy storage materials, semiconductors, and catalytic materials.