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Catalyst for catalytically combusting chlorine-containing organic substance and preparation method thereof

A catalytic combustion and catalyst technology, applied in combustion methods, combustion types, incinerators, etc., can solve problems such as limited catalytic activity, and achieve the effects of improving catalytic performance, simple preparation process and low cost

Inactive Publication Date: 2017-12-08
杭州更蓝生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst is simple to prepare, low in cost, and has good thermal stability, but its catalytic activity is limited

Method used

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  • Catalyst for catalytically combusting chlorine-containing organic substance and preparation method thereof
  • Catalyst for catalytically combusting chlorine-containing organic substance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 11.6 g of cerium nitrate and 0.24 g of sodium chloride were dissolved in 100 mL of water, then 20 g of CNTS nanosheets were added to the solution, and the mixture was kept stirring for 30 minutes. The mixture was then transferred to an autoclave and heated to 130°C and maintained at this temperature for 24 hours. Filter, then dry the solid product at 60°C overnight, and finally roast in air at high temperature, press into tablets, and sieve (70-80 mesh) to obtain 23gNa-CeO 2 / CNTS catalyst, where CeO 2 The mass accounts for 30% of the catalyst, and Na accounts for 0.5% of the catalyst.

Embodiment 2

[0022] 11.6 g of cerium nitrate and 0.35 g of potassium chloride were dissolved in 100 mL of water, then 20 g of CNTS nanosheets were added to the solution, and the mixture was kept stirring for 30 minutes. The mixture was then transferred to an autoclave and heated to 130°C and maintained at this temperature for 24 hours. Filter, then dry the solid product overnight at 60°C, and finally roast it in the air at high temperature, press into tablets, and sieve (70-80 mesh) to obtain 25g K-CeO 2 / CNTS catalyst, where CeO 2 The mass accounts for 30% of the catalyst, and the K accounts for 0.6% of the catalyst.

Embodiment 3

[0024] 11.6 g of cerium nitrate and 0.67 g of cesium chloride were dissolved in 100 mL of water, then 20 g of CNTS nanosheets were added to the solution, and the mixture was kept stirring for 30 minutes. The mixture was then transferred to an autoclave and heated to 130°C and maintained at this temperature for 24 hours. Filter, then dry the solid product overnight at 60°C, and finally roast it in air at high temperature, press it into tablets, and sieve (70-80 mesh) to obtain 23.5g Na-CeO 2 / CNTS catalyst, where CeO 2 The mass accounts for 30% of the catalyst, and the CS accounts for 0.7% of the catalyst.

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Abstract

The invention provides a catalyst for catalytically combusting a chlorine-containing organic substance and a preparation method thereof. The catalyst has excellent oxygen storage and release performance and oxygen mobility by sufficiently utilizing the acidity of CeO2 and reversible conversion of Ce<4+> / Ce<3+>, and the exposed crystal surface of CeO2 is changed by using CNTS which has high specific surface area and rich mesoporous channels as a carrier, so that the oxygen mobility is further improved, the catalyzing performance is further improved, and the catalyst can stably convert chlorine-containing organic substances into H2O, CO2 and HCl for a long time in the air environment.

Description

technical field [0001] The invention relates to the technical field of chlorine-containing waste gas treatment, in particular to a catalyst for catalytic combustion of chlorine-containing organic matter and a preparation method thereof. Background technique [0002] Volatile organic compounds (VOCs) are a class of volatile organic compounds with high vapor pressure that exist in the air in the form of vapor at normal temperature and pressure. According to their different chemical structures, the main components are: alkanes, organic chlorine Compounds, Freon series, organic ketones, amines, alcohols, ethers and petroleum hydrocarbon compounds, etc. Among them, chlorine-containing volatile organic compounds (CVOs) have attracted the attention of many researchers, mainly because they are more harmful to human health, and some CVOs can also destroy the atmospheric ozone layer, leading to photochemical smog and atmospheric acidification. However, these substances are widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10F23G7/07
CPCB01J23/10B01J23/002F23G7/07F23G2209/142
Inventor 董秋月
Owner 杭州更蓝生物科技有限公司
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