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Sulfur-resistant catalytic combustion catalyst and preparation method thereof

A catalytic combustion and catalyst technology, which is applied in the direction of combustion methods, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of uneven coating, decreased catalyst activity, and easy falling off, so as to increase catalytic efficiency and improve catalytic combustion activity , high combustion efficiency

Active Publication Date: 2017-10-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst uses TiO 2 -CeO 2 Although it has good catalytic activity and stability for sulfur-containing organic waste gas, the coating is easy to cause uneven coating and easy to fall off, and the catalyst activity will decrease during long-term use

Method used

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  • Sulfur-resistant catalytic combustion catalyst and preparation method thereof
  • Sulfur-resistant catalytic combustion catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: The sulfur-resistant catalytic combustion catalyst of the present embodiment is made from the composition of the following weight percentage: 94.7% of the carrier, 0.3% of the active component, and the balance is a co-catalyst; wherein the carrier is Ti-MCM-41, The active components are Pt and PtS 2 , the cocatalyst is MnO 2 ; By weight percentage, the content of Ti in the Ti-MCM-41 molecular sieve is 5%, and the content of Si is 95%;

[0024] A preparation method of a sulfur-resistant catalytic combustion catalyst, the specific steps are as follows:

[0025] (1) Preparation of mesoporous carrier: mix sodium silicate and template evenly to make solution A, adjust pH value to 7 with sulfuric acid solution, add TiCl 4 Aqueous solution, hydrothermal reaction to obtain a precipitate, the precipitate is filtered, washed, dried, and roasted to obtain a catalyst mesoporous carrier, that is, Ti-MCM-41 molecular sieve; wherein the mass ratio of sodium silicate an...

Embodiment 2

[0029] Embodiment 2: The sulfur-resistant catalytic combustion catalyst of this embodiment is made from the composition of the following weight percentage: 93.1% of the carrier, 0.4% of the active component, and the balance is a co-catalyst; wherein the carrier is Ti-MCM-41, the activity The components are Pt and PtS 2 , the cocatalyst is Co 2 o 3 ; By weight percentage, the content of Ti in the Ti-MCM-41 molecular sieve is 2%, and the content of Si is 98%;

[0030] A preparation method of a sulfur-resistant catalytic combustion catalyst, the specific steps are as follows:

[0031] (1) Preparation of mesoporous carrier: mix sodium silicate and template evenly to make solution A, adjust pH value to 8 with sulfuric acid solution, add TiCl 4Aqueous solution, hydrothermal reaction to obtain a precipitate, the precipitate is filtered, washed, dried, and roasted to obtain a catalyst mesoporous carrier, that is, Ti-MCM-41 molecular sieve; wherein the mass ratio of sodium silicate ...

Embodiment 3

[0035] Embodiment 3: The sulfur-resistant catalytic combustion catalyst of this embodiment is made from the composition in the following percentages by weight: 95.2% of the carrier, 0.35% of the active component, and the balance is a co-catalyst; wherein the carrier is Ti-MCM-41, the activity The components are Pt and PtS 2 , the cocatalyst is CeO 2 ; By weight percentage, the content of Ti in the described Ti-MCM-41 molecular sieve is 8%, and the content of Si is 92%;

[0036] A preparation method of a sulfur-resistant catalytic combustion catalyst, the specific steps are as follows:

[0037] (1) Preparation of mesoporous carrier: mix sodium silicate and template evenly to make solution A, adjust pH value to 9 with sulfuric acid solution, add TiCl 4 Aqueous solution, hydrothermal reaction to obtain a precipitate, the precipitate is filtered, washed, dried, and roasted to obtain a catalyst mesoporous carrier, that is, Ti-MCM-41 molecular sieve; wherein the mass ratio of sodi...

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Abstract

The invention relates to a sulfur-resistant catalytic combustion catalyst and a preparation method thereof, belonging to the technical field of material synthesis. The catalyst is prepared from the following components in percentage by weight: 93%-97% of a carrier, 0.01%-0.5% of an active component and the balance of a cocatalyst, wherein the carrier is a Ti-MCM-41 or TS-1 molecular sieve, active agents are Pt and PtS2, and the cocatalyst is one or more of MnO2, Co2O3 and CeO2 in any ratio. The catalyst has excellent sulfur resistance and high catalytic efficiency for the combustion of industrial waste gas and is capable of desorbing CO, and the inactivation of the catalyst in an SO2 atmosphere is avoided.

Description

technical field [0001] The invention relates to a sulfur-resistant catalytic combustion catalyst and a preparation method thereof, belonging to the technical field of material synthesis. Background technique [0002] With the development of industry, the combustion of sulfur-containing fuels in industry, the smelting of sulfur-containing minerals, and the emission of industrial waste gas from the chemical industry have increased rapidly. Sulfur-containing compounds are one of the main pollutants in the atmosphere and are closely related to atmospheric air quality. It has caused serious environmental problems and attracted widespread attention. Currently, the technologies used to treat sulfur-containing low-calorific value industrial waste gas mainly include activated carbon adsorption, direct combustion, catalytic combustion, high-temperature incineration, absorption method, condensation method, and plasma low-temperature catalytic oxidation. However, there are still some pr...

Claims

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Application Information

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IPC IPC(8): B01J29/89B01J29/03F23G7/07
CPCF23G7/07B01J29/0341B01J29/89
Inventor 张秋林孙梦晗宁平龙开先王静唐彤
Owner KUNMING UNIV OF SCI & TECH