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Ruthenium titanium zirconium catalyst obtained by catalytic combustion of dichloromethane and preparation method thereof

A catalytic combustion, dichloromethane technology, applied in combustion methods, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as urogenital dysplasia, reproductive toxicity, unclear human beings, etc., and achieve convenient technical routes. The effect of practical, strong anti-chlorine poisoning ability and simple preparation process

Inactive Publication Date: 2015-08-12
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dichloromethane has an anesthetic effect and mainly damages the central nervous system and the respiratory system; dichloromethane is mutagenic; dichloromethane is reproductively toxic, causing abnormal musculoskeletal development and abnormal development of the genitourinary system; dichloromethane has DNA inhibitory properties; Dichloromethane is also carcinogenic, and the International Agency for Research on Cancer's carcinogenicity review of dichloromethane is positive for animals, but not clear for humans
Using TiO 2 and ZrO 2 Composite oxides are used as supports and loaded with RuO 2 The catalyst has high catalytic activity and stability for the catalytic combustion of dichloromethane, and there are few reports on the catalytic oxidation reaction of dichloromethane

Method used

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  • Ruthenium titanium zirconium catalyst obtained by catalytic combustion of dichloromethane and preparation method thereof
  • Ruthenium titanium zirconium catalyst obtained by catalytic combustion of dichloromethane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: take by weighing 9.6g of Ti(SO 4 ) 2 Dissolve in 200ml of deionized water, stir for 1 hour, slowly add ammonia water dropwise until the pH reaches 9, and make it precipitate. Stir at a certain speed for 3 hours, filter and wash until neutral, 110 o C dry for 12 hours, 550 o C was roasted for 4 hours to obtain a catalyst carrier; 2g of TiO was weighed 2 Carrier, measure 1ml of RuCl 3 Add the solution (concentration: 20g / l) into a watch glass, add about 3ml of deionized water dropwise, and stir repeatedly with a glass rod until evenly mixed. After natural evaporation, put in 110 o C oven dry overnight, 500 o C calcined for 4 hours to produce Ru / TiO 2 catalyst.

Embodiment 2

[0014] Embodiment 2: take by weighing 8.64g of Ti(SO 4 ) 2 and 1.288 g of ZrOCl 2 ·8H 2 O was dissolved in 200ml of deionized water, stirred for 1 hour, and ammonia water was slowly added dropwise until the pH reached 9, allowing it to precipitate. Stir at a certain speed for 3h, filter and wash until neutral, 110 o C dry for 12 hours, 550 o C was roasted for 4 hours to obtain a catalyst carrier; 2g of TiO was weighed 2 -ZrO 2 Carrier, measure 1ml of RuCl 3 Add the solution (concentration: 20g / l) into a watch glass, add about 3ml of deionized water dropwise, and stir repeatedly with a glass rod until evenly mixed. After natural evaporation, put in 110 o C oven dry overnight, 500 o C was calcined for 4 hours to prepare the Ru / T9Z1 catalyst.

Embodiment 3

[0015] Example 3: A Ru / T7Z3 catalyst with a Ti / Zr molar ratio of 7:3 was prepared according to the same method as in Example 2.

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Abstract

The present invention relates to a ruthenium titanium zirconium catalyst obtained by catalytic combustion of dichloromethane and a preparation method thereof. The preparation process of the catalyst comprises the following steps: according to a general formula TixZr10-x, wherein x is 0-10, using Ti(SO4)2 and ZrOCl2.8H2O as a precursor and ammoniacal liquor as a precipitating agent, using a coprecipitation method to prepare a catalyst carrier, and then using an immersion method for loading RuO2 with mass ratio being 1% to obtain the finished product catalyst. The catalyst is used for catalytic combustion of dichloromethane, air is taken as an oxidizing agent, ignition temperature is low, completing combustion temperature is low, and dichloromethane can be completely combusted at temperature of 280 DEG C. The catalyst has high stability, and can be kept for 10 hours at temperature of 280 DEG C without inactivation. The preparation method is simple and is easy to operate, and the prepared catalyst has activity and stability.

Description

technical field [0001] The invention relates to a catalyst for the low-temperature catalytic combustion of dichloromethane and a preparation method thereof. Background technique [0002] In recent years, air pollution has become more and more serious, among which chlorinated volatile organic compounds are one of the most difficult pollutants to be treated, and have attracted more and more attention. Among various chlorine-containing volatile organic compounds, dichloromethane is widely used in the fields of film production and medicine because of its strong solubility. Dichloromethane has an anesthetic effect and mainly damages the central nervous system and the respiratory system; dichloromethane is mutagenic; dichloromethane is reproductively toxic, causing abnormal musculoskeletal development and abnormal development of the genitourinary system; dichloromethane has DNA inhibitory properties; Dichloromethane is also carcinogenic. The International Agency for Research on C...

Claims

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Application Information

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IPC IPC(8): B01J23/46F23G7/07F23G7/04F23G7/00
Inventor 王辉邓威王幸宜
Owner EAST CHINA UNIV OF SCI & TECH
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