Preparation method for high-efficiency Ce1-xMnxO2-delta solid solution low-temperature denitration catalyst and application thereof

A low-temperature denitration, solid solution technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Water resistance requirements and other issues, to achieve the effect of broad industrial application prospects, less pollution, and rich raw material resources
CN105214652AInactive Publication Date: 2016-01-06CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Publication Date
2016-01-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation method for a high-efficiency Ce1-xMnxO2-delta solid solution low-temperature denitration catalyst and an application thereof. The preparation method comprises the following steps: uniformly dissolving a certain amount of Mn(NO3)2 and Ce(NO3)3; slowly adding the mixture into a superfluous NaOH solution and completely depositing; transferring into a hydrothermal reaction kettle and performing high-temperature high-pressure reaction; and lastly, performing centrifuging and solid-liquid separation, and cleaning, drying and roasting the acquired solid phase matter, thereby acquiring the Ce1-xMnxO2-delta solid solution catalyst. The preparation method provided by the invention has the advantages that the prepared catalyst is excellent in denitration property and has high activity, high selectivity, wide operating temperature window and excellent water resistance; the required raw materials are rich in resources, cheap and easily acquired; the preparation process is simple and convenient; the energy consumption is low, the pollution is small and the environment is protected; and the catalyst is fit for mass production and has a wide industrial application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of low-temperature denitrification catalysts for flue gas in coal-fired power plants, and in particular relates to a high-efficiency Ce 1–x mn x o 2–δ Preparation method and application of solid solution low-temperature denitrification catalyst. Background technique

[0002] Nitrogen oxides (NO x ) can not only lead to the formation of acid rain and photochemical smog, but also PM 2.5 One of the main precursors of NO x The presence of these substances can cause serious harm to human health and plant growth. Coal-fired power plants are NO x It is imminent to denitrify its flue gas. Studies have shown that ammonia (NH 3 ) selective catalytic reduction of NO x (NH 3 -SCR) is the most effective technology for flue gas denitrification in coal-fired power plants. The key to this technology lies in the development of denitrification catalysts. At present, WO 3 or MoO 3 Modified V 2 o 5 / TiO 2 is wide...

Claims

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