Catalyst for catalytic combustion of chloralkane, preparation method and application thereof

A technology of catalytic combustion and chlorinated alkanes, which is applied in the direction of combustion methods, physical/chemical process catalysts, chemical instruments and methods, etc., to improve the anti-chlorine poisoning performance, increase the content of active oxygen species and oxygen mobility, and facilitate oxidation detoxification The effect of removing

Inactive Publication Date: 2016-02-03
FUJIAN ZIJIN ENVIRONMENT ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the influence of MnO x -SrO 2 Composite oxides and TiO 2 -ZrO 2 Due to the limitations of the performance of the composite carrier itself, MnO cannot be used in the prior art x -SrO 2 Composite oxide and TiO 2 -ZrO 2 Composite carrier combined to prepare this type of catalyst

Method used

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  • Catalyst for catalytic combustion of chloralkane, preparation method and application thereof
  • Catalyst for catalytic combustion of chloralkane, preparation method and application thereof

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Embodiment 1-3

[0037] This embodiment 1-3 is the component and content of the catalyst of catalytic combustion chlorinated alkanes of the present invention, specifically see following table 1:

[0038] Table 1

[0039] Example MnO x -SrO 2 The mass percentage of composite oxides in the catalyst SrO 2 % of active ingredient TiO 2 -ZrO 2 The mass percentage of composite oxides in the catalyst Ti / Zr value of x Example 1 3wt% 10wt% 97wt% 1 2, 3 or 4 Example 2 5wt% 30wt% 95wt% 1 2, 3 or 4 Example 3 10wt% 50wt% 90wt% 1 2, 3 or 4

Embodiment 4

[0041] The preparation method of the catalyst of above-mentioned embodiment 1-3 comprises the following steps:

[0042] (1) Dissolve a certain amount of manganese nitrate and strontium nitrate in a certain concentration of oxalic acid solution, and mix after the solution is fully dissolved;

[0043] (2), add pre-prepared TiO to the mixed solution in step (1) 2 -ZrO 2 Composite oxide carrier, stirred evenly, impregnated for 24 hours;

[0044] (3) Dry the mixture in step (2) at 110°C for 12 hours;

[0045] (4) Put the dried product of step (3) into a muffle furnace and calcinate for 3 hours at 400°C in the air, and then grind and sieve to obtain a catalyst. The catalyst is expressed as: (MnO x ) m -(SrO 2 )n / Ti 0.5 Zr 0.5 , where m and n represent MnO x and SrO 2 Accounting for the mass fraction of the catalyst, X is a positive integer greater than 2. The catalyzer as embodiment 1 is (MnO x ) 0.027 -(SrO 2 ) 0.003 / Ti 0.5 Zr 0.5 , the catalyst of embodiment 2 is ...

Embodiment 5

[0047] The catalyst of above-mentioned embodiment 1-3 can also be made through the following steps:

[0048] (1) Dissolve a certain amount of manganese nitrate and strontium nitrate in a certain concentration of hydrochloric acid solution, and mix after the solution is fully dissolved;

[0049] (2), add pre-prepared TiO to the mixed solution in step (1) 2 -ZrO 2 Composite oxide carrier, stirred evenly, impregnated for 36 hours;

[0050] (3) Dry the mixture in step (2) at 90°C for 10 hours;

[0051] (4) Put the dried product of step (3) into a muffle furnace for calcination at 350° C. in air for 2 hours, and then grind and sieve to obtain a catalyst.

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Abstract

The invention relates to a catalyst for catalytic combustion of chloralkane. The catalyst comprises the following components according to mass percentage: 3wt%-10wt% of MnOx-SrO2 a composite oxide as an active component and 90wt%-97wt% of a TiO2-ZrO2 composite oxide as a carrier, wherein X is a positive integer more than 2. The catalyst can be used in a catalytic combustion CVOCs filed, the TiO2-ZrO2 composite oxide is taken as the carrier, the MnOx-SrO2 composite oxide is taken as the active component, high catalyst reaction activity can be reached at low temperature, and chlorine poisoning phenomenon of the catalyst can be inhibited.

Description

technical field [0001] The invention belongs to the technical field of catalysts for catalytic combustion of chlorine-containing volatile organic compounds, and in particular relates to a catalyst for catalytic combustion of chlorinated alkanes and a preparation method and application of the catalyst, mainly used for catalysis of low-concentration C1-C4 chlorinated alkanes combustion. Background technique [0002] Chlorinated Volatile Organic Compounds (CVOCs) are a class of common polluting gases that are extremely harmful to the environment and human health, mainly including methyl chloride, ethyl chloride, carbon tetrachloride, chloroform, vinyl chloride, etc. Such substances exist stably in the atmosphere for a long time, not only causing holes in the ozone layer and photochemical smog, but also teratogenic, carcinogenic and mutagenic to humans. [0003] Among the current treatment technologies for CVOCs, catalytic combustion technology is considered to be one of the be...

Claims

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Application Information

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IPC IPC(8): B01J23/34F23G7/07
Inventor 黄丽明王洪明杨广华
Owner FUJIAN ZIJIN ENVIRONMENT ENG TECH
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