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Double-transition metal-based silkworm excrement porous carbon catalyst and preparation method thereof

A transition metal, porous carbon technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. Simple and eco-friendly effects

Inactive Publication Date: 2017-01-11
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst prepared by impregnation method was used to carry out the catalytic oxidation reaction of A compound. It was found that the presence of water vapor had a significant negative impact on the catalytic activity of these three catalysts, and the catalyst was most affected by water vapor. The conversion rate of methane on the catalyst drops sharply

Method used

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  • Double-transition metal-based silkworm excrement porous carbon catalyst and preparation method thereof
  • Double-transition metal-based silkworm excrement porous carbon catalyst and preparation method thereof
  • Double-transition metal-based silkworm excrement porous carbon catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] A preparation method of double transition metal-based silkworm excrement porous carbon catalyst, comprising the following steps,

[0031] (1) Preparation of silkworm excrement porous carbon

[0032] in N 2 In the atmosphere, 10.0g of original silkworm excrement and 10.0g of ZnCl 2 The powder was raised to 300°C at a heating rate of 2°C / min, kept at 300°C for 0.5h, and then cooled to room temperature to obtain silkworm excrement porous carbon, denoted as SPC.

[0033] (2) H of silkworm excrement porous carbon 2 Deoxidation treatment

[0034] Put 1g SPC in 10% (volume ratio) H 2 Concentration of N 2 Calcined at 200℃ for 5.0h under the atmosphere to obtain the low-oxygen silkworm excrement porous carbon HSPC;

[0035] (3) Dissolve 0.3g of copper nitrate and 0.3g of ferric acetate in 30ml of deionized water, then immerse 0.5g of HSPC in their salt solution, put it into a plasma reactor after drying, and pass through N 2 As a modified gas, the output voltage of the pl...

Embodiment 2

[0038] A preparation method of double transition metal-based silkworm excrement porous carbon catalyst, comprising the following steps,

[0039] (1) Preparation of silkworm excrement porous carbon

[0040] in N 2 In the atmosphere, 10.0g of original silkworm excrement and 30.0g of ZnCl 2 The powder was raised to 400°C at a heating rate of 5°C / min, kept at 400°C for 5.0 h, and then cooled to room temperature to obtain silkworm excrement porous carbon, denoted as SPC.

[0041] (2) H of silkworm excrement porous carbon 2 Deoxidation treatment

[0042] Put 1g SPC in 15% (volume ratio) H 2 Concentration of N 2 Calcined at 300℃ for 2.0h under the atmosphere to obtain the low-oxygen silkworm excrement porous carbon HSPC;

[0043] (3) Dissolve 0.15g of cobalt nitrate and 0.3g of ferric acetate in 30ml of deionized water, then immerse 0.2g of HSPC in their salt solution, put them into a plasma reactor after drying, and pass through N 2 As the modified gas, the output voltage of ...

Embodiment 3

[0046] A preparation method of double transition metal-based silkworm excrement porous carbon catalyst, comprising the following steps,

[0047] (1) Preparation of silkworm excrement porous carbon

[0048] in N 2 In the atmosphere, 10.0g of original silkworm excrement and 60.0g of ZnCl 2 The powder was raised to 600°C at a heating rate of 5°C / min, kept at 600°C for 2 hours, and then cooled to room temperature to obtain silkworm excrement porous carbon, denoted as SPC.

[0049] (2) H of silkworm excrement porous carbon 2 Deoxidation treatment

[0050] Put 2g SPC in 20% (volume ratio) H 2 Concentration of N 2 Calcined at 400℃ for 3.0h under atmosphere to obtain low-oxygen silkworm excrement porous carbon HSPC;

[0051] (3) Dissolve 0.15g of cobalt nitrate and 0.6g of chromium nitrate into 30ml of deionized water, then immerse 0.3g of HSPC in their salt solution, put it into a plasma reactor after drying, and pass through N 2 As the modified gas, the output voltage of the ...

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Abstract

The invention discloses a double-transition metal-based silkworm excrement porous carbon catalyst and a preparation method thereof. The preparation method includes the steps of firstly, mixing silkworm excrement with ZnCl2, placing into a high-temperature tube furnace, feeding protective gas for purging, heating to 300-700 DEG C, and performing reaction to obtain silkworm excrement porous carbon SPC; secondly, calcining the SPC under N2 atmosphere with H2 concentration being 10-30% (volume ratio) at 200-500 DEG C to obtain low-oxygen-content silkworm excrement porous carbon H-SPC; thirdly, impregnating the H-SPC into the salt solution of two transition metal, drying, and loading the transition metal to the silkworm excrement porous carbon through a plasma radiation manner; fourthly, calcining the obtained material at 150-500 DEG C to obtain the double-transition metal-based silkworm excrement porous carbon catalyst. The double-transition metal-based silkworm excrement porous carbon catalyst is low in cost and capable of weakening influence of steam on VOCs catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of volatile organic compound treatment, and relates to a preparation method of a volatile organic compound oxidation catalyst. Background technique [0002] Human industrial civilization has made unprecedented achievements in the 20th century, but the earth environment on which human beings depend is also suffering unprecedented damage. Environmental problems are seriously threatening the survival and development of human beings, and have become the top ten problems of global concern. With the development and progress of human society, after meeting the basic needs of human survival, people began to pay more attention to the pollution of the atmospheric environment, especially the indoor environmental pollution that we rely on for survival has become one of the most concerned issues in the 21st century. [0003] At present, among various factors that lead to environmental pollution and destruction, volatile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/745B01J23/75B01D53/86B01D53/72B01J23/86
CPCB01D53/8687B01J23/34B01J23/745B01J23/75B01J23/864B01J37/088B01D2257/708B01J35/617
Inventor 赵祯霞朱梅萍胡鹏赵钟兴
Owner GUANGXI UNIV