铈基SCR脱硝催化剂研究进展

doi:10.19964/j.issn.1006-4990.2020-0481

Abstract

Abstract:

In recent years,Ce-based SCR catalyst has become a research hotspot in the field of low temperature denitration.According to the type of carriers,Ce-based denitration catalysts could be classified to metal oxide catalysts,TiO₂ carrier cat-alysts,molecular sieve carrier catalysts,activated carbon and Al₂O₃ carrier catalysts,etc.According to the types of catalysts,the influence of doping modification,preparation process and reaction conditions on the performance of catalysts were intro-duced,and possible reason and mechanism were described.At present,most of Ce-based catalysts are stagnated in the labora-tory,and there are still some problems in industrial application,especially for low temperature denitration catalyst,the prob-lem of active center blockage is more prominent,and the cost of catalyst is higher.In the future,the preparation process of cat-alyst should be researched to solve the problem of catalyst forming,so as to realize industrial application.At the same time,the poisoning mechanism of catalyst should be discussed to furtherly enhance its anti-poisoning ability.In addition,suitable materials doped with Ce should be sought to achieve high-efficiency denitration and maximize economic benefits.

Key words: cerium, denitration, catalyst, carrier, TiO₂, molecular sieves

CLC Number:

TQ133.3

Liu Xingyu,Jia Yuanyuan,Wu Shufeng,Tang Zhonghua,Zhang Peng,Liu Junqiang,Pu Xin. Research progress of Ce-based SCR denitration catalysts[J]. Inorganic Chemicals Industry, 2021, 53(8): 15-20.

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Research progress of Ce-based SCR denitration catalysts

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