Cu-Mn-based catalytic combustion catalyst for treatment of 'triphen' waste gas and preparation method thereof

A catalyst, copper-manganese technology, applied in physical/chemical process catalysts, combustion methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of less "triphenyl" exhaust gas and less catalyst research, and achieve Improve the activity, improve the low temperature catalytic activity, improve the effect of dispersion and utilization

Inactive Publication Date: 2010-07-07
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modification of traditional supports and composite supports mixed with oxygen storage components have gradually become the most promising supports for catalytic combustion catalysts. At present, research on using composite supports to support noble metal catalysts has gradually become a new direction in the field of catalytic combustion. However, loading non-precious metals There are fewer studies on catalysts for oxides, and there are fewer related studies on the treatment of "triphenyl" exhaust gas

Method used

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  • Cu-Mn-based catalytic combustion catalyst for treatment of 'triphen' waste gas and preparation method thereof
  • Cu-Mn-based catalytic combustion catalyst for treatment of 'triphen' waste gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Preparation of 8% CuMn 2 o 4 / 6%CeO 2 / Al 2 o 3

[0016] (a) 6% CeO 2 / Al 2 o 3 Preparation of composite carrier

[0017] According to the impregnating solution concentration C of cerium nitrate is 0.2147g / ml, take 8.6g of cerium nitrate and add 40ml of deionized water to fully dissolve to obtain a salt solution, immerse the dry spherical alumina, soak it at room temperature for 2 hours, and place it in a water bath at 50°C After soaking for 3 hours, take it out, dry it in an oven at 100°C for 5 hours, and then bake it in a muffle furnace at 550°C for 5 hours to obtain a 6% CeO 2 composite carrier. Catalyst activity test results: at a reaction temperature of 200-550°C, the conversion rate of benzene reaches 20%-70%, the conversion rate of toluene reaches 20%-70%, and the conversion rate of xylene reaches 20%-70%.

[0018] (b) 8% CuMn 2 o 4 / 6%CeO 2 / Al 2 o 3 Catalyst preparation

[0019] According to the concentration C of the impregnation ...

Embodiment 2

[0020] Embodiment 2: Preparation of 15% CuMn 2 o 4 / 6%CeO 2 / Al 2 o 3

[0021] The impregnating solution concentration C by copper-manganese composite oxide is 0.0014mol / ml, gets 10g copper nitrate, gets 20ml manganese nitrate solution and adds 10ml deionized water and fully dissolves and obtains salt solution, the composite carrier prepared in embodiment 1 (a) step Immerse in salt solution, immerse in room temperature for 2h, take out after immersing in 50°C water bath for 3h, dry in 100°C oven for 5h, and then bake in 550°C muffle furnace for 5h to obtain 15% CuMn 2 o 4 / 6%CeO 2 / Al 2 o3 catalyst. Activity evaluation of the catalyst: at a reaction temperature of 200-550°C, the conversion rate of benzene reaches 40%-90%, the conversion rate of toluene reaches 50%-100%, and the conversion rate of xylene reaches 50%-100%.

Embodiment 3

[0022] Embodiment 3: Preparation of 8% CuMn 2 o 4 / 11%CeO 2 / Al 2 o 3

[0023] (a) 11% CeO 2 / Al 2 o 3 Preparation of composite carrier

[0024] According to the concentration C of the cerium nitrate impregnating solution being 0.4533g / ml, take 27g of cerium nitrate and add 60ml of deionized water to fully dissolve to obtain a salt solution, immerse the dry spherical alumina, immerse at room temperature for 2h, then immerse in a water bath at 50°C for 3h and take it out. Dry in an oven at 100°C for 5h, and then bake in a muffle furnace at 550°C for 5h to obtain 2 composite carrier. Activity evaluation of the catalyst: at a reaction temperature of 200-550°C, the conversion rate of benzene reaches 20%-80%, the conversion rate of toluene reaches 20%-80%, and the conversion rate of xylene reaches 20%-80%.

[0025] (b) 8% CuMn 2 o 4 / 11%CeO 2 / Al 2 o 3 Catalyst preparation

[0026] According to the concentration C of the impregnation solution of copper-manganese com...

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Abstract

The invention relates to a Cu-Mn-based catalytic combustion catalyst for treatment of triphen waste gas and a preparation method thereof. The catalyst selects a Cu-Mn compound oxide as an active ingredient which loads on a compound carrier by an immersion method to obtain a supported non-noble metal compound oxide catalyst. The general formula of the catalyst is Cua(Mn)bO4 / A, wherein, a is 0-1 and b 0-2. In the catalyst, A is the compound carrier and Cua(Mn)bO4 is the active ingredient. The compound carrier is composed of 20-80 per cent of traditional carrier and 5-40 per cent of CeO2 (or ZrO2) by weight. The active ingredient is composed of 5-40 per cent of CuO, and 25-40 per cent of MnO by weight. The catalyst uses the shaped carrier to soak, which can eliminate the catalyst shaping technology, simplify the technology and reduce the cost. Simultaneously, rare earth oxygen storage ingredients are added in the compound carrier, which can greatly reduce the reaction temperature when organic substances are burning, improve catalyzing activity at low temperature, and extensively prolong the catalyzing life.

Description

technical field [0001] The invention relates to a catalyst for treating "triphenyl" waste gas, in particular to a supported copper-manganese composite oxide catalytic combustion catalyst and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of coating industry, shoe industry, fine chemical industry, petrochemical industry, printing and machinery manufacturing and other industries, adhesives and paints have become more and more widely used. It is understood that tens of thousands of shoe factories in China currently use cold-bonding technology to make shoes, and use various types of chemicals containing triphenyl (benzene, toluene, xylene), ethyl acetate, butyl acetate, cyclohexane, and cyclohexanone every year. More than 100,000 tons of adhesives. Highly volatile benzene organic chemical poisons volatilize from the adhesive and enter the human body through the respiratory tract, endangering the health of workers and caus...

Claims

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Application Information

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IPC IPC(8): B01J23/889F23G7/07
Inventor 蒋毅李吉花王娟芸陈君和张小霞张志强王奂祎
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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