Research advance review on supported Mn-based catalysts at low-temperature selective catalytic reduction of NOx with NH3

doi:10.16085/j.issn.1000-6613.2016.04.020

Abstract

Abstract: MnO_x has become a catalyst research hot spot low-temperature selective catalytic reduction of NO_x with NH₃, because of its good catalytic activity. Supported Mn-based catalysts could greatly overcome the problems such as poor N₂selectivity at low temperature and easily being poisoned, et al, and therefore have good prospects for industrial applications. This paper presents the research progress of Mn-based low-temperature De-NO_x catalysts, from their active ingredients, carriers, mechanism, kinetics, and abilities of anti-H₂O and SO₂. The latest achievements on the preparation method and denitrification activity of artificial and natural carrier based such as the metal oxide, molecular sieve, and carbon based supported MnO_x were explained in detail. It also summarizes the progress of the catalytic mechanism and kinetics of Mn-based low-temperature denitration catalysts, and analyzes the poisoning mechanism of H₂O and SO₂. It is pointed out that improving the anti-poisoning performance and regeneration are the focus of future research.

Key words: environment, selective catalytic reduction (SCR), catalyst, manganese, low-temperature, De-NO_x

摘要： MnO_x以其良好的低温催化活性成为当前低温NH₃-SCR脱硝催化剂研究的热点,负载型Mn基低温脱硝催化剂较好地解决了非负载型低温N₂选择性差、易中毒等难题,具有良好的工业应用前景.本文综述了负载型Mn基低温脱硝催化剂的研究现状,从活性组分、载体、制备方法、机理和动力学以及抗H₂O、SO₂性能5个方面介绍了负载型Mn基低温脱硝催化剂的研究现状,着重阐述了金属氧化物、分子筛、炭基等人工和天然载体负载MnO_x在制备方法和脱硝活性方面的最新研究成果,简述了Mn基低温脱硝催化剂的催化机理以及动力学研究进展,分析了Mn基低温脱硝催化剂的H₂O和SO₂中毒机理.指出提高负载型Mn基低温脱硝催化剂的抗中毒性能和再生是今后研究的重点.

关键词: 环境, 选择催化还原, 催化剂, 锰, 低温, 脱硝

CLC Number:

X511

YANG Yongli, XU Dongyao, CHAO Chunyan, GAO Ming. Research advance review on supported Mn-based catalysts at low-temperature selective catalytic reduction of NO_x with NH₃[J]. Chemical Industry and Engineering Progree, 2016, 35(04): 1094-1100.

杨永利, 徐东耀, 晁春艳, 高明. 负载型Mn基低温NH₃-SCR脱硝催化剂研究综述[J]. 化工进展, 2016, 35(04): 1094-1100.

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Research advance review on supported Mn-based catalysts at low-temperature selective catalytic reduction of NO_x with NH₃

负载型Mn基低温NH₃-SCR脱硝催化剂研究综述

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