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Preparation method of high-sulfur-resistance catalytic combustion catalyst

A catalytic combustion, high sulfur resistance technology, applied in the field of environmental engineering, can solve the problems of easy sulfur poisoning and easy sintering, and achieve the effect of strong sulfur resistance and high catalytic activity

Inactive Publication Date: 2016-09-28
浙江恒荣环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of existing catalysts that are prone to sulfur poisoning and high temperature sintering in the process of catalytic combustion of sulfur-containing industrial waste gas, and to provide a preparation method of a catalytic combustion catalyst with high sulfur resistance

Method used

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  • Preparation method of high-sulfur-resistance catalytic combustion catalyst
  • Preparation method of high-sulfur-resistance catalytic combustion catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0031] Embodiment 1-6——The catalytic combustion evaluation of novel catalyst to benzene:

Embodiment 1

[0033] (1) WO 3 -ZrO 2 Vector preparation

[0034] WO 3 -ZrO 2 The carrier was prepared by co-precipitation method. Weigh 0.1063g of ammonium metatungstate and 1.5670g of ZrOCl 2 ·8H 2 O was dissolved in 25 mL of water to prepare a solution. According to the volume ratio of 1:2, ZrOCl 2 ·8H 2 Aqueous solution of O with 25% NH 3 ·H 2 O mixing, stirring at a speed of 300r / min to mix the two evenly; at the same time, add an aqueous solution of ammonium metatungstate, adjust the pH value to 10, and filter after 1 hour of reaction; rinse the filtered product with deionized water 3 times to remove impurities After ionization, the solid product was dried in an oven at 110°C for 12 hours, and then calcined at 500°C for 4 hours to obtain 10% WO 3 -ZrO 2 .

[0035] (2) La-Ce-Mn / WO 3 -ZrO 2 preparation

[0036] La-Ce-Mn / WO 3 -ZrO 2 The preparation adopts the dipping method. Weigh 0.0312g of La(NO 3 ) 3 ·6H 2 O, 0.0310g of Ce(NO 3 ) 3 ·6H 2 O, 0.0652g of Mn(NO 3 ) ...

Embodiment 2

[0044] (1) WO 3 -ZrO 2 Vector preparation

[0045] WO 3 -ZrO 2 The carrier was prepared by co-precipitation method. Weigh 0.1063g of ammonium metatungstate and 1.5670g of ZrOCl 2 ·8H 2 O was dissolved in 25 mL of water to prepare a solution. According to the volume ratio of 1:2, ZrOCl 2 ·8H 2 Aqueous solution of O with 25% NH 3 ·H 2 O mixing, stirring at a speed of 300r / min to mix the two evenly; at the same time, add an aqueous solution of ammonium metatungstate, adjust the pH value to 10, and filter after 1 hour of reaction; rinse the filtered product with deionized water 3 times to remove impurities After ionization, the solid product was dried in an oven at 110°C for 12 hours, and then calcined at 500°C for 4 hours to obtain 10% WO 3 -ZrO 2 .

[0046] (2) La-Ce-Mn / WO 3 -ZrO 2 preparation

[0047] La-Ce-Mn / WO 3 -ZrO 2 The preparation adopts the dipping method. Weigh 0.0187g of La(NO 3 ) 3 ·6H 2 O, 0.0248g of Ce(NO 3 ) 3 ·6H 2 O, 0.1304g of Mn(NO 3 ...

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Abstract

The invention relates to the technical field of environment engineering, and aims to a preparation method of a high-sulfur-resistance catalytic combustion catalyst. The method comprises the following main steps: preparing a WO3-ZrO2 carrier by using a coprecipitation method; preparing La-Ce-Mn / WO3-ZrO2 by using an impregnation method; preparing a NaPdCl4 stock solution; and loading Pd by using a photo-reduction sedimentation method to finally obtain a Pd / La-Ce-Mn / WO3-ZrO2 catalyst which is used for catalytic combustion. The performance of absorption of the catalyst to H2S and SO2 is weak, and the sulfur resistance is relatively high; and an active main body is highly dispersed on the surface of the carrier, and the catalyst is large in specific surface area and high in catalytic activity. The catalyst has high catalytic activity to a benzene compound and an alkane compound. In addition, the catalyst is also suitable for catalytic combustion degradation of aldehyde, ketone, halohydrocarbon and the like in the industrial waste gas.

Description

technical field [0001] The invention relates to a method for preparing a catalyst which is applied to catalytic combustion and has good sulfur resistance, and belongs to the technical field of environmental engineering. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds, VOCs) refer to organic compounds with a saturated vapor pressure greater than 70Pa at room temperature, or with a boiling point below 260°C at normal pressure. The World Health Organization defines VOCs as: volatile organic compounds with a melting point below room temperature and a boiling point between 50 and 260 °C. VOCs mainly include eight types of substances: alkanes, aromatics, alkenes, halogenated hydrocarbons, aldehydes, ketones and other compounds. VOCs mainly come from machinery industry, surface anticorrosion, antirust treatment, petrochemical industry, pharmaceutical industry, printing industry, food industry, paint decoration industry, shoemaking and other ind...

Claims

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Application Information

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IPC IPC(8): B01J23/656B01J35/10
CPCB01J23/6562B01J35/40B01J35/613B01J35/615
Inventor 赵伟荣
Owner 浙江恒荣环保科技有限公司