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

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 ...

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Problems solved by technology

[0006] However, the two-component composite manganese oxide catalyst obtained by using Birnessite-type manganese o

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