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Cu-Ce doped type manganese oxide catalyst, preparation method and application thereof

A catalyst, manganese oxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of two-component composite manganese oxide catalyst. Patent reports and other issues, to achieve the effect of excellent low-temperature activity, low price, and good catalytic combustion performance

Inactive Publication Date: 2012-06-27
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the two-component composite manganese oxide catalyst obtained by using Birnessite-type manganese oxide as a precursor and simultaneously doping Cu and Ce components has not been reported in literature or patents.

Method used

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  • Cu-Ce doped type manganese oxide catalyst, preparation method and application thereof
  • Cu-Ce doped type manganese oxide catalyst, preparation method and application thereof
  • Cu-Ce doped type manganese oxide catalyst, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: In an 80°C water bath, mix Birnessite-type manganese oxide, copper nitrate, and cerium nitrate according to the Cu:Ce:Mn molar ratio of 0.05:0.05:1, stir vigorously, wash and filter, and bake at 110°C for 12 h Finally, a black solid powder was obtained, and the powder was roasted in an air atmosphere at a rate of 1 °C / min to 200 °C for 10 h to prepare a Cu and Ce doped manganese oxide catalyst.

Embodiment 2

[0019] Example 2: In a 40°C water bath, mix Birnessite-type manganese oxide, copper chloride, and cerium nitrate according to the Cu:Ce:Mn molar ratio of 0.05:0.05:1, stir vigorously, wash and filter, and dry at 110°C for 12 After h, a black solid powder was obtained, and the powder was calcined in an air atmosphere at a rate of 5 °C / min to 700 °C for 1 h to prepare a Cu and Ce doped manganese oxide catalyst.

Embodiment 3

[0020] Example 3: In a 60°C water bath, mix Birnessite-type manganese oxide, copper acetate, and ammonium cerium nitrate at a Cu:Ce:Mn molar ratio of 0.05:0.05:1, stir vigorously, wash and filter, and bake at 110°C for 12 After h, a black solid powder was obtained, and the powder was calcined in an air atmosphere at a rate of 10 °C / min to 700 °C for 3 h to prepare a Cu and Ce doped manganese oxide catalyst.

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PUM

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Abstract

The invention discloses a Cu-Ce doped type manganese oxide catalyst, a preparation method and the application of the Cu-Ce doped type manganese oxide catalyst. The precursor Birnessite-type manganese oxide of the catalyst is firstly prepared by a sol-gel method, the components Ce and Cu are introduced at the same time by an immersion method, and finally, the Cu-Ce doped type manganese oxide catalyst can be obtained by roasting. The Cu-Ce doped type manganese oxide catalyst is low in price, has better adaptability, can be applied to the catalytic combustion of dimethyl ether and volatile organic compounds (VOCs), has excellent low-temperature activity, and only has the products of carbon dioxide and water without other by-products.

Description

technical field [0001] The invention relates to a Cu, Ce doped manganese oxide catalyst, its preparation method and application. Background technique [0002] Catalytic combustion is a technology that emerged in the 1940s. It is a process in which volatile organic waste gases (VOCs) or fuels (methane, natural gas, etc.) are rapidly oxidized into water and carbon dioxide at a lower temperature under the action of a catalyst. Under catalytic combustion conditions, the initial combustion temperature of VOCs and fuel can be reduced, which can save energy and improve combustion efficiency compared with the direct combustion method. Moreover, catalytic combustion is not limited by the concentration of hydrocarbons, and will not cause secondary pollution. [0003] Commonly used catalytic combustion catalysts include noble metals (Pd, Pt, Au, etc.), transition metal oxides, perovskites, hexaaluminates, etc. (Natural Gas Chemical Industry, 2008, 33 (4) 71)). Noble metal catalysts ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01D53/86B01D53/72
Inventor 孙明余林邢泽锋张晓珊刁贵强谢志锋廖志勇
Owner GUANGDONG UNIV OF TECH
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