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A catalyst for catalytic combustion of chlorine-containing volatile organic compounds and its preparation method and application

A volatile organic compound, catalytic combustion technology, used in physical/chemical process catalysts, combustion methods, molecular sieve catalysts, etc., can solve the problem of catalysts prone to chlorine poisoning, and achieve the effects of low cost, high adsorption activity, and good catalytic activity.

Active Publication Date: 2022-04-29
NANJING TECH UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Technical problem to be solved: the present invention provides a catalyst for the catalytic combustion of chlorine-containing volatile organic compounds and its preparation method and application. The catalyst has low preparation cost, simple preparation process, and can efficiently and stably remove chlorine-containing volatile organic compounds. Can solve the problem of catalyst prone to chlorine poisoning

Method used

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  • A catalyst for catalytic combustion of chlorine-containing volatile organic compounds and its preparation method and application
  • A catalyst for catalytic combustion of chlorine-containing volatile organic compounds and its preparation method and application
  • A catalyst for catalytic combustion of chlorine-containing volatile organic compounds and its preparation method and application

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Embodiment 1

[0032] The invention relates to a catalyst for catalytic combustion of chlorine containing volatile organic compounds and a preparation method thereof. The raw materials include fly ash, strong oxidizing acid, sodium hydroxide, disodium ethylenediamine tetraacetate, titanium dioxide and cerium nitrate. The mass ratio of fly ash, titanium dioxide, disodium EDTA, deionized water and cerium nitrate is 30:5:2:10:3.

[0033] The specific steps are as follows:

[0034] (1) Pretreatment of fly ash and titanium dioxide: weigh 30 g of fly ash, grind it to 200 mesh, dry it in an oven at 80 ℃ for 3 hours, cool it to room temperature, mix the dried fly ash with 10% hydrochloric acid solution at a material liquid ratio (g / ml) of 5:15, stir it with a magnetic stirrer at 30 ℃ for 2 hours to obtain the mixture liquid, wash and filter the mixture liquid with distilled water for 3 times to neutral, and dry it for 10 hours, Obtain the pretreated fly ash; Weigh 10 g of titanium dioxide, grind it to...

Embodiment 2

[0040]The invention relates to a catalyst for catalytic combustion of chlorine containing volatile organic compounds and a preparation method thereof. The raw materials include fly ash, strong oxidizing acid, sodium hydroxide, disodium ethylenediamine tetraacetate, titanium dioxide and cerium nitrate. The mass ratio of fly ash, titanium dioxide, disodium EDTA, deionized water and cerium nitrate is 40:5:5:20:4.

[0041] The specific steps are as follows:

[0042] (1) Pretreatment of fly ash and titanium dioxide: weigh 40 g of fly ash, grind it to 200 mesh, dry it in an oven at 120 ℃ for 5 hours, cool it to room temperature, mix the dried fly ash with 20% sulfuric acid solution at a material liquid ratio (g / ml) of 5:15, stir it with a magnetic stirrer at 30 ℃ for 4 hours to obtain the mixture liquid, wash and filter the mixture liquid with distilled water for 5 times to neutral, and dry it for 12 hours, Obtain the pretreated fly ash; Weigh 5 g of titanium dioxide, grind it to 200 ...

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Abstract

A catalyst for catalytic combustion of chlorine-containing volatile organic compounds, a preparation method and application thereof, the steps include fly ash and titanium dioxide pretreatment; preparation of titanium dioxide-modified fly ash-based zeolite and titanium dioxide-modified fly ash-based zeolite loading Preparation of cerium oxide. The catalyst of the invention has low preparation cost, simple preparation process, can efficiently and stably remove chlorine-containing volatile organic compounds, and can solve the problem that the catalyst is susceptible to chlorine poisoning.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a catalyst for catalytic combustion of chlorine containing volatile organic compounds and a preparation method and application thereof. Background technology [0002] Chlorinated volatile organic compounds (CVOCs) are composed of various relatively low molecular weight compounds and are discharged into the atmosphere through a large number of industrial operations. It is well known that these compounds have unique toxicity, high inertia and long-term persistence in the environment. Therefore, the development of effective methods for safe treatment and conversion of these harmful compounds into more environmentally friendly alternatives has become an important challenge. Among all technologies for eliminating cvoc, catalytic combustion can effectively and economically remove chlorine containing volatile organic compounds (≤ 1000 ppm) from the atmosphere due to its low operating temperature (30...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10B01J29/06F23G7/07
CPCB01J23/10B01J29/061F23G7/07F23G2202/60F23G2209/142B01J2229/18
Inventor 陈英文周月范梦婕沈树宝祝社民
Owner NANJING TECH UNIV
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