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Method for preparing sulfurized ferroferric oxide complex by using solid raw material mechanochemical technology, and application of sulfurized ferroferric oxide complex

A technology of ferric sulfide sulfide and mechanochemical method, which is applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc. Advanced problems, to achieve the effect of convenient in-situ synthesis application, simple process and controllable morphology

Active Publication Date: 2021-09-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the existence of ZVI, the ball milling process and material collection and storage must be carried out in a glove box, and also for the purpose of ZVI anti-oxidation, to avoid the ZVI activity being too high after ball milling, and the violent reaction after encountering oxygen will cause danger. Therefore, in the preparation process must The use of atmosphere protection greatly increases the difficulty and requirements of the preparation process, and also limits the scope of application in the actual production process
[0008] In addition, during the reaction process, the activation of persulfate by sulfide zero-valent iron will lead to a large amount of iron dissolution, which will produce a large amount of iron sludge and inhibit the reuse of materials.

Method used

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  • Method for preparing sulfurized ferroferric oxide complex by using solid raw material mechanochemical technology, and application of sulfurized ferroferric oxide complex
  • Method for preparing sulfurized ferroferric oxide complex by using solid raw material mechanochemical technology, and application of sulfurized ferroferric oxide complex
  • Method for preparing sulfurized ferroferric oxide complex by using solid raw material mechanochemical technology, and application of sulfurized ferroferric oxide complex

Examples

Experimental program
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Effect test

Embodiment 1

[0038] It was prepared using a planetary ball mill sulfurized tri-iron tetroxide complexes, the following steps:

[0039] 1) The 50 stainless steel balls having a diameter of 6mm stainless steel bead mill pot was charged 45mL;

[0040] 2) Weigh 0.6g of elemental sulfur powder, and 1.4g triiron tetraoxide (accounting for 30% of sulfur powder) was placed in a ball mill jar, without protective atmosphere, temperature and pressure can be maintained;

[0041] 3) The mill speed was set 600rpm, 4H milling time is set;

[0042] 4) After completion of milling the material removed to give triiron tetroxide sulfide complex.

[0043] In a typical representative of 2,4-dichlorophenol, triiron tetroxide sulfide complex prepared activated investigated peroxomonosulfate activity and the ability to degrade the target pollutants.

[0044] In 100mL Erlenmeyer flask was added 15mg triiron tetroxide sulfide complex was added a solution of 50mL, wherein the PMS concentration is 1.0mM, 2,4-DCP concentrati...

Embodiment 2

[0047] It was prepared using a planetary ball mill sulfurized tri-iron tetroxide complexes, the following steps:

[0048] 1) The 50 stainless steel balls having a diameter of 6mm stainless steel bead mill pot was charged 45mL;

[0049] 2) Weigh 0.6g of elemental sulfur powder, and 1.4g triiron tetraoxide (accounting for 30% of sulfur powder) was placed in a ball mill jar, without protective atmosphere, temperature and pressure can be maintained;

[0050] 3) The mill speed was set 600rpm, 8H milling time is set;

[0051] 4) After completion of milling the material removed to give triiron tetroxide sulfide complex.

[0052] In a typical representative of 2,4-dichlorophenol, triiron tetroxide sulfide complex prepared activated investigated peroxomonosulfate activity and the ability to degrade the target pollutants.

[0053] In 100mL Erlenmeyer flask was added 15mg triiron tetroxide sulfide complex was added a solution of 50mL, wherein the PMS concentration is 1.0mM, 2,4-DCP concentra...

Embodiment 3

[0057] Example 3 differs from the embodiment of Example 1 in that the milling time was 10h. The reaction conditions consistent reaction 5min, the degradation efficiency of 96.2%.

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Abstract

The invention discloses a method for preparing a ferroferric oxide sulfide complex by using a solid raw material mechanochemical technology, and application of the ferroferric oxide sulfide complex, and belongs to the technical field of preparation of micro-nano ferroferric oxide sulfide complexes. The method comprises the specific steps that ferroferric oxide and elemental sulfur powder are mixed and subjected to ball milling in a ball milling tank, a material obtained after ball milling is finished is a ferroferric oxide sulfide complex, and further cleaning and calcining operation is not needed; and the mass ratio of the powdered sulfur is 10-40%. According to the invention, the ferroferric oxide sulfide complex is prepared by adopting the mechanochemical technology, and the ferroferric oxide sulfide complex is used for activating persulfate to degrade organic pollutants. The preparation method has the advantages of being simple in process, convenient to operate, environmentally friendly, uniform in bulk phase, rich in surface defects, high in surface activity and the like.

Description

Technical field [0001] The present invention pertains to micro-nano composite iron sulfide preparation Technical Field tetroxide, particularly to a method and apparatus use a solid iron material mechanochemical Method tetroxide sulfide complex. Background technique [0002] Iron oxides as an inexpensive and efficient catalysts, has been widely used in the field of removal of contaminants. Iron Oxide its typical representative of the main advantages: high abundance of elements in the environment of low risk, high reactivity, magnetic materials conducive to recovery and reduce costs. Active triiron tetroxide oxidation in the field of advanced applications also significantly higher than other iron oxide, iron minerals. Thus, application of triiron tetroxide activated persulfate removed biodegradation of organic pollutants is a very promising treatment process. [0003] Fe3O4 limit the application main factors: 1) Since the ferromagnetic itself, tend to agglomerate triiron tetroxide,...

Claims

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Application Information

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IPC IPC(8): B01J27/043B01J37/20C02F1/72C09K17/02B09C1/08C02F101/34C02F101/36C02F101/38
CPCB01J27/043B01J37/0036B01J37/20C02F1/725C09K17/02B09C1/002B09C1/08C02F2101/36C02F2101/345C02F2101/38C02F2101/34B09C2101/00
Inventor 黄俊邓闪闪葛羽锡葛亮余刚
Owner TSINGHUA UNIV
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