PrOx-MnOx/SAPO-34 low-temperature SCR smoke denitration catalyst and preparation method and application thereof

A SAPO-34, denitration catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as unfavorable continuous operation of factories, easy poisoning and deactivation, etc., and achieve good low-temperature denitration catalytic activity, Conducive to adsorption and improved dispersibility
CN105833901AActive Publication Date: 2016-08-10SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2016-08-10

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Abstract

The invention discloses a PrOx-MnOx / SAPO-34 low-temperature SCR smoke denitration catalyst and a preparation method and application thereof .In the preparation method, an SAPO-34 molecular sieve serves as the carrier, Mn and Pr are loaded on the SAPO-34 molecular sieve through a solvent dispersion method, and then the PrOx-MnOx / SAPO-34 low-temperature SCR smoke denitration catalyst is prepared through roasting; in the PrOx-MnOx / SAPO-34 low-temperature SCR smoke denitration catalyst, the mass percentage of Mn and the SAPO-34 molecular sieve is 15-25%, and the molar ratio of Pr to Mn is 0-0.3 .The dispersity of active components is improved, the specific surface area and acidity of the catalyst are increased, and the catalyst presents excellent NH3-SCR performance at a low temperature of 200 DEG C or below and has certain SO2 poisoning resistant performance .
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Description

technical field

[0001] The invention belongs to the field of environmental protection and environmental catalysis, in particular to a PrO x -MnO x / SAPO-34 low-temperature SCR flue gas denitrification catalyst and its preparation method and application. Background technique

[0002] Most anthropogenic nitrogen oxides (Nitrogen oxides, NO x ) emissions from stationary sources, which will cause environmental problems such as photochemical smog, acid rain, and ozone holes, and cause serious harm to human health and the ecological environment. How to effectively control and reduce NO x The emissions have attracted the attention of researchers from various countries. In 2015, the emission of nitrogen oxides exceeded 28 million tons, and most of them came from stationary sources of nitrogen oxides such as electric power, heat production and supply industries. Therefore, controlling the emission of stationary sources of nitrogen oxides is the key to the prevention and control of...

Claims

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