Precious metal nanoparticle surface deoxidizing device
By introducing reducing gas into the deoxidation box and using a vibration motor and heating layer to treat the precious metal nanoparticles, the problem of high surface oxygen content is solved, and the performance of the particles and product quality are improved.
Patent Information
- Application Number
- CN202422157817.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the prior art, the surface oxygen content of noble metal nanoparticles is relatively high, which affects their own characteristics and the performance of the obtained products.
A deoxygenation box is used for deoxygenation treatment. Reducing gas is input through the air inlet. The vibration motor on the tray is used to make the precious metal nanoparticles jump on the tray. The heating layer is combined with the reaction temperature to ensure that the particle surface is fully in contact with the reducing gas and remove surface oxygen.
Effectively reduce the surface oxygen content of precious metal nanoparticles, improve their own characteristics and the performance of the obtained products, reduce particle agglomeration, and improve deoxygenation efficiency.
Smart Images
Figure CN223338367U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of chemical equipment, and in particular to a device for deoxidizing the surface of precious metal nanoparticles. Background Art
[0002] The surface oxygen content of precious metal nanoparticles has a certain influence on the inherent properties of the precious metal nanoparticles. For example, the yield strength, tensile strength and elongation after fracture of products manufactured using precious metal nanoparticles are all related to the surface oxygen content of the precious metal nanoparticles. The greater the surface oxygen content of the precious metal nanoparticles, the worse the yield strength, tensile strength and elongation after fracture of the products manufactured using the precious metal nanoparticles.
[0003] Currently, precious metal nanoparticles are typically produced by first generating a precious metal solution through a chemical reaction, and then atomizing the solution to produce a powder. However, the surface oxygen content of precious metal nanoparticles produced by this atomization method is relatively high. Utility Model Content
[0004] The embodiment of the present application provides a device for deoxygenating the surface of noble metal nanoparticles, which is used to improve the problem of high surface oxygen content of noble metal nanoparticles.
[0005] In a first aspect, an embodiment of the present application provides a device for deoxidizing the surface of noble metal nanoparticles, comprising:
[0006] A deaerator box, wherein at least one feed port is provided on the left side of the deaerator box, a heating layer is provided on the inner wall of the deaerator box, and an air inlet is provided at the bottom of the deaerator box;
[0007] A plurality of trays, each of which is provided on the inner wall of both sides of the deaerator, and the plurality of trays are alternately fixed on the inner wall of both sides of the deaerator in a vertical direction, wherein one of the trays is connected to the feed port;
[0008] A plurality of vibration motors are provided, each of the vibration motors is disposed at the bottom of one of the trays.
[0009] In some embodiments of the present application, the number of the feed port is one, and from top to bottom, the feed port is located at the uppermost tray.
[0010] In some embodiments of the present application, the tray is inclined toward the bottom of the deaerator, and the angle between the tray and the horizontal plane is in a range of 10° to 30°.
[0011] In some embodiments of the present application, a discharge port is provided at the bottom of the deaerator, and from top to bottom, the lowest side of the tray at the bottom is arranged close to the discharge port.
[0012] In some embodiments of the present application, a feed valve is provided at the feed inlet, and a discharge valve is provided at the discharge outlet.
[0013] In some embodiments of the present application, the air inlet and the outlet are arranged opposite to each other, and the air inlet is arranged close to the left inner wall of the deaerator, the outlet is arranged close to the right inner wall of the deaerator, and the projection of the bottommost tray from top to bottom toward the bottom of the deaerator covers the air inlet.
[0014] In some embodiments of the present application, a blocking net is provided on the inner bottom wall of the deaerator box. The blocking net is located between the air inlet and the discharge port and is aligned with the tray closest to the bottom of the deaerator box.
[0015] In some embodiments of the present application, along the top-down direction, the projection of the tray provided on the left inner wall of the deaerator box partially overlaps with the projection of the tray provided on the right inner wall of the deaerator box.
[0016] In some embodiments of the present application, the heating layer includes multiple layers of heating wires or multiple resistance heating coils.
[0017] In some embodiments of the present application, the noble metal nanoparticle surface deoxygenation device also includes an exhaust gas treatment mechanism, the top of the deoxygenation box is connected to an exhaust pipe, and the end of the exhaust pipe facing away from the deoxygenation box is connected to the exhaust gas treatment mechanism.
[0018] As can be seen, the embodiment of the present application mainly uses the air inlet in the deoxygenation box to input reducing gas into the deoxygenation box, and uses the feed port to transport the precious metal nanoparticles that need to be deoxygenated to the tray in the deoxygenation box. Then, the vibration motor is turned on to vibrate the tray, causing the precious metal nanoparticles on the tray to jump on the tray, thereby ensuring that the entire surface of the precious metal nanoparticles can be exposed to the reducing gas, allowing the oxygen on the surface to react with the reducing gas, thereby achieving the purpose of removing oxygen from the particle surface. In addition, by providing a heating layer on the inner wall of the deoxygenation box, the temperature in the deoxygenation box can be increased as needed, which is conducive to accelerating the reaction between the reducing gas and oxygen. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 A schematic structural diagram of a device for deoxidizing the surface of noble metal nanoparticles provided in an embodiment of the present utility model;
[0021] Figure 2 A schematic structural diagram of another noble metal nanoparticle surface deoxidation device provided in an embodiment of the present utility model;
[0022] Figure 3 This is a schematic structural diagram of another noble metal nanoparticle surface deoxygenation device provided in an embodiment of the present utility model.
[0023] Description of reference numerals:
[0024] 1. Deaerator box; 11. Feed port; 12. Discharge port; 13. Air inlet; 2. Tray; 3. Vibration motor; 4. Blocking net; 5. Heating layer; 6. Air outlet pipe. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.
[0026] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.
[0027] See Figure 1 , the embodiment of the present application provides a device for deoxidizing the surface of noble metal nanoparticles, comprising:
[0028] A deaerator box 1, wherein at least one feed port 11 is provided on the left side of the deaerator box 1, a heating layer 5 is provided on the inner wall of the deaerator box 1, and an air inlet 13 is provided at the bottom of the deaerator box 1;
[0029] A plurality of trays 2, wherein the plurality of trays 2 are respectively arranged on the inner walls on both sides of the deaerator box 1, and the plurality of trays 2 are alternately fixed on the inner walls on both sides of the deaerator box 1 in the vertical direction, and one of the trays 2 is connected to the feed port 11;
[0030] A plurality of vibration motors 3 are provided, and each vibration motor 3 is disposed at the bottom of one of the trays 2 .
[0031] The technical solution provided by this application is mainly to input reducing gas into the deaerator box 1 through the air inlet 13 in the deaerator box 1, and to use the feed port 11 to transport the precious metal nanoparticles that need to be deoxygenated to the tray 2 in the deaerator box 1, and then turn on the vibration motor 3 to vibrate the tray 2, so that the precious metal nanoparticles on the tray 2 jump on the tray 2, thereby ensuring that the entire surface of the precious metal nanoparticles can be exposed to the reducing gas, so that the oxygen on the surface reacts with the reducing gas, and the purpose of removing oxygen from the surface of the particles is achieved. In addition, by providing a heating layer 5 on the inner wall of the deaerator box 1, the temperature in the deaerator box 1 can be increased as needed, which is conducive to accelerating the reaction between the reducing gas and oxygen. A vibration motor 3 is provided on the tray 2 so that the tray 2 can vibrate with the vibration motor 3, thereby driving the nanoparticles on the tray 2 to vibrate. Compared with the nanoparticles that are always stationary in the tray 2, the continuously vibrating nanoparticles will not have a blind spot for chemical reaction, that is, there will be no situation where the surface that is continuously in contact with the tray 2 is difficult to react with the reducing gas. In addition, the continuous vibration of the nanoparticles also helps reduce the agglomeration of the nanoparticles, which can improve the problem of particle agglomeration to a certain extent, thereby making it more conducive to the reaction of the particles with the reducing gas. In addition, the continuous vibration of the tray 2 can also play a role in transporting the nanoparticles.
[0032] See Figure 2 In some embodiments, there are multiple feed ports 11, and one feed port 11 is provided corresponding to one tray 2. Specifically, one feed port 11 is provided above one tray 2. Preferably, the lowest edge of the feed port 11 is connected to the top edge of the tray 2. By providing a feed port 11 on each tray 2 and connecting the feed ports 11 to the tray 2, each feed port 11 can feed and smoothly enter the corresponding tray 2, thereby increasing the number of nanoparticles deoxygenated simultaneously and thus improving the deoxygenation efficiency.
[0033] See Figure 3 In one embodiment, there is one feed port 11 and it is arranged at the top tray 2. The multiple trays 2 are all arranged horizontally, and the multiple trays 2 are alternately arranged on the left and right inner walls of the deaerator 1 from top to bottom, and the projections of adjacent trays 2 from top to bottom overlap partially, thereby ensuring that the nanoparticles can stay in each tray 2 when they fall from top to bottom through vibration, thereby extending the reaction time of the nanoparticles and ensuring that the surface oxygen of the nanoparticles is eliminated as cleanly as possible.
[0034] In other embodiments, there is one feed port 11, and from top to bottom, the feed port 11 is located at the topmost tray 2, allowing the nanoparticles to enter through the feed port 11 and then pass through multiple trays 2 from top to bottom, allowing the nanoparticles to gradually descend, extending the vibration path and vibration time of the nanoparticles, and facilitating a full reaction between the nanoparticles and the reducing gas. Furthermore, the air inlet 13 is located at the bottom of the deaerator box 1, and the heating layer 5 is capable of heating the interior of the deaerator box 1, which is conducive to increasing the temperature of the reducing gas and thus rising from bottom to top, that is, the reducing gas and the nanoparticles move toward each other, which is conducive to enhancing the deoxygenation reaction between the nanoparticles and the reducing gas.
[0035] Furthermore, the tray 2 is tilted toward the bottom of the deaerator 1, and the angle between the tray 2 and the horizontal plane ranges from 10° to 30°. The tilted arrangement of the tray 2 is beneficial for transporting the nanoparticles from top to bottom.
[0036] Furthermore, a discharge port 12 is provided at the bottom of the deoxygenation box 1. From top to bottom, the lowest side of the bottom tray 2 is arranged close to the discharge port 12, which is conducive to allowing the nanoparticles to automatically move toward the discharge port 12 while undergoing a reducing reaction, thereby completing the transportation of the nanoparticles.
[0037] In some embodiments, a feed valve is provided at the feed port 11, and a discharge valve is provided at the discharge port 12. The feed valve can control the opening and closing of the feed port 11, effectively feeding the material while effectively preventing the discharge of reducing gas and nanoparticles from the feed port 11. The discharge valve can control the opening and closing of the discharge port 12, effectively discharging the material while also accumulating the nanoparticles. The accumulation of nanoparticles is mainly used to prevent incomplete removal of surface oxygen from the nanoparticles, ensuring that the oxygen on the surface of the nanoparticles is eliminated as much as possible.
[0038] In some embodiments, the air inlet 13 is disposed opposite the discharge port 12, with the air inlet 13 disposed near the left inner wall of the deaerator box 1, and the discharge port 12 disposed near the right inner wall of the deaerator box 1. Furthermore, the projection of the bottommost tray 2 toward the bottom of the deaerator box 1 covers the air inlet 13. This arrangement helps prevent nanoparticles from clogging the air inlet 13 or being discharged from the air inlet 13.
[0039] Furthermore, a blocking net 4 is provided on the inner bottom wall of the deaerator box 1. The blocking net 4 is located between the air inlet 13 and the discharge port 12 and is aligned with the tray 2 closest to the bottom of the deaerator box 1. The blocking net 4 is used to further prevent the nanoparticles from falling to the air inlet 13, and because a net structure is adopted, the obstruction to the flow of reducing gas can be minimized.
[0040] In some embodiments, along the top-down direction, the projection of the tray 2 located on the left inner wall of the deaerator box 1 partially overlaps with the projection of the tray 2 located on the right inner wall of the deaerator box 1, ensuring as much as possible that the nanoparticles on the tray 2 can fall onto the tray 2 below when they fall after vibration, thereby extending the vibration time and transmission path of the nanoparticles as much as possible, and then extending the reaction time of the nanoparticles and the reducing gas.
[0041] In some embodiments, the heating layer 5 includes multiple layers of heating wires or multiple resistance heating coils. In this embodiment, the heating layer 5 is a multi-layer heating wire that is used to heat the temperature inside the deaerator box 1, thereby accelerating the distribution of the reducing gas throughout the deaerator box 1 and also accelerating the reduction reaction.
[0042] In some embodiments, the surface deoxygenation device of precious metal nanoparticles also includes an exhaust gas treatment mechanism. The top of the deoxygenation box 1 is connected to an exhaust pipe 6, and the end of the exhaust pipe 6 facing away from the deoxygenation box 1 is connected to the exhaust gas treatment mechanism. When the exhaust gas treatment mechanism receives unreacted reducing gas, it processes the reducing gas, such as fully burning it, or uses other methods to eliminate the reducing gas to avoid polluting the environment.
[0043] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.
[0044] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.
[0045] Similarly, it should be noted that, in order to simplify the description of this application and thus facilitate understanding of one or more embodiments of the application, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of the individual embodiments disclosed above.
[0046] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, and documents, cited in this application is hereby incorporated by reference in its entirety, except for any application history document that is inconsistent with or conflicts with this application, and excluding any document (currently or subsequently appended to this application) that limits the broadest scope of the claims of this application. It should be noted that if the descriptions, definitions, and / or terminology used in the accompanying materials are inconsistent or conflicting with this application, the descriptions, definitions, and / or terminology used in this application will control.
[0047] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A device for deoxidizing the surface of noble metal nanoparticles, characterized in that: include: A deaerator box, wherein at least one feed port is provided on the left side of the deaerator box, a heating layer is provided on the inner wall of the deaerator box, and an air inlet is provided at the bottom of the deaerator box; A plurality of trays, each of which is provided on the inner wall of both sides of the deaerator, and the plurality of trays are alternately fixed on the inner wall of both sides of the deaerator in a vertical direction, wherein one of the trays is connected to the feed port; A plurality of vibration motors are provided, each of the vibration motors is disposed at the bottom of one of the trays.
2. The device for deoxidizing the surface of noble metal nanoparticles according to claim 1, characterized in that: The number of the feed port is one, and from top to bottom, the feed port is located at the uppermost tray.
3. The device for deoxidizing the surface of noble metal nanoparticles according to claim 2, characterized in that: The tray is inclined toward the bottom of the deaerator, and an angle between the tray and a horizontal plane ranges from 10° to 30°.
4. The device for deoxidizing the surface of noble metal nanoparticles according to claim 3, characterized in that: A discharge port is provided at the bottom of the deaerator box, and from top to bottom, the lowest side of the tray at the bottom is arranged close to the discharge port.
5. The device for deoxidizing the surface of noble metal nanoparticles according to claim 4, characterized in that: A feed valve is provided at the feed inlet, and a discharge valve is provided at the discharge outlet.
6. The device for deoxidizing the surface of noble metal nanoparticles according to claim 5, characterized in that: The air inlet is arranged opposite to the discharge port, and the air inlet is arranged close to the left inner wall of the deaerator, the discharge port is arranged close to the right inner wall of the deaerator, and the projection of the bottommost tray from top to bottom toward the bottom of the deaerator covers the air inlet.
7. The device for deoxidizing the surface of noble metal nanoparticles according to claim 6, characterized in that: A blocking net is provided on the inner bottom wall of the deaerator box. The blocking net is located between the air inlet and the discharge port and is aligned with the tray closest to the bottom of the deaerator box.
8. The device for deoxidizing the surface of noble metal nanoparticles according to any one of claims 1 to 7, characterized in that: Along the top-down direction, the projection of the tray arranged on the left inner wall of the deaerator box and the projection of the tray arranged on the right inner wall of the deaerator box partially overlap.
9. The device for deoxidizing the surface of noble metal nanoparticles according to any one of claims 1 to 7, characterized in that: The heating layer includes multiple layers of heating wires or multiple resistance heating coils.
10. The device for deoxidizing the surface of noble metal nanoparticles according to any one of claims 1 to 7, characterized in that: The noble metal nanoparticle surface deoxidation device further comprises an exhaust gas treatment mechanism. The top of the deoxidation box is connected to an exhaust pipe, and one end of the exhaust pipe facing away from the deoxidation box is connected to the exhaust gas treatment mechanism.