凹凸棒石低温SCR脱硝催化剂的研究进展

doi:10.16085/j.issn.1000-6613.2016.10.021

化工进展 ›› 2016, Vol. 35 ›› Issue (10): 3164-3168.DOI: 10.16085/j.issn.1000-6613.2016.10.021

凹凸棒石低温SCR脱硝催化剂的研究进展

左海清¹, 徐东耀¹, 但海均¹, 杨永利², 马妍¹

1 中国矿业大学(北京)化学与环境工程学院, 北京 100083;
2 华北科技学院, 河北燕郊 065201

收稿日期:2016-01-20 修回日期:2016-03-29 出版日期:2016-10-05 发布日期:2016-10-05
通讯作者: 徐东耀,教授,博士生导师,主要从事大气污染防治、环保材料理论与技术研究。E-mail:xudongyao101@126.com
作者简介:左海清(1982-),女,博士研究生。E-mail:haiqingzuo0818@163.com。
基金资助:
中央高校基本科研业务费项目（3142015091）。

Research progress in palygorskite-supported catalysts for selective catalytic reduction of NO_x at low temperature

ZUO Haiqing¹, XU Dongyao¹, DAN Haijun¹, YANG Yongli², MA Yan¹

1 School of Chemical & Environmental Engineering, China University of Mining & Technology, Beijing 100083, China;
2 North China Institute of Science and Technology, Yanjiao 065201, Hebei, China

Received:2016-01-20 Revised:2016-03-29 Online:2016-10-05 Published:2016-10-05

摘要/Abstract

摘要： 选择性催化还原（SCR）脱硝技术是目前主流的氮氧化物脱除技术，其核心是催化剂。凹凸棒石成本低廉，性能优越，适合用作SCR催化剂的载体，而且以凹凸棒石为载体的催化剂显示出良好的低温选择性和稳定性，具有很好的应用前景。本文总结了凹凸棒石低温SCR脱硝催化剂的研究进展，阐述了活性组分、制备方法、前体物种、活性组分负载量、煅烧温度、元素掺杂等因素对催化剂脱硝活性的影响，同时简要介绍了导致此类催化剂失活的原因以及失活催化剂的再生方法，并指出在凹凸棒石负载型低温脱硝催化剂上进行的SCR脱硝反应遵循E-R机理，最后指出此类催化剂的未来研究方向主要是进一步提高现有催化剂的低温催化活性和抗中毒能力，实现工业化应用。

关键词: 凹凸棒石, 载体, 脱硝, 催化剂, 选择性催化还原

Abstract: Selective catalytic reduction(SCR)denitration has become a mainstream technology to remove nitrogen oxide(NO_x),and the key is catalyst. Due to its advantages of good performance and low cost,palygorskite is suitable to be employed as catalyst support in the SCR of NO_x. Besides,palygorskite-based catalysts exhibit good selectivity and low temperature stability,which have good application prospects. In this paper,the research progress of palygorskite-based SCR catalysts at low temperature is summarized,and the main influence factors on their denitrification performance are reviewed in terms of active ingredient,preparation method,precursor,loading of active component,calcination temperature and doping element. Furthermore,the deactivation reasons and regeneration approaches for such catalysts are briefly described. It is also pointed that the catalytic reaction follows an Eley-Rideal mechanism. And finally,the future research will be aimed at further improving the catalytic activity at low temperature and the capability to resist poisoning of present catalysts,in order to be utilized in industry in the future.

Key words: palygorskite, support, nitrogen oxide removal, catalyst, selective catalytic reduction(SCR)

中图分类号:

TQ426

左海清, 徐东耀, 但海均, 杨永利, 马妍. 凹凸棒石低温SCR脱硝催化剂的研究进展[J]. 化工进展, 2016, 35(10): 3164-3168.

ZUO Haiqing, XU Dongyao, DAN Haijun, YANG Yongli, MA Yan. Research progress in palygorskite-supported catalysts for selective catalytic reduction of NO_x at low temperature[J]. Chemical Industry and Engineering Progree, 2016, 35(10): 3164-3168.

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凹凸棒石低温SCR脱硝催化剂的研究进展

Research progress in palygorskite-supported catalysts for selective catalytic reduction of NO_x at low temperature

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凹凸棒石低温SCR脱硝催化剂的研究进展

Research progress in palygorskite-supported catalysts for selective catalytic reduction of NOx at low temperature

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Research progress in palygorskite-supported catalysts for selective catalytic reduction of NO_x at low temperature