化工进展 ›› 2018, Vol. 37 ›› Issue (12): 4654-4661.DOI: 10.16085/j.issn.1000-6613.2018-0080

• 工业催化 • 上一篇    下一篇

富氧条件下金属催化CO还原NO的研究进展

张国祥1,2, 陈晓晖1,2   

  1. 1 福州大学石油化工学院, 福建 福州 350116;
    2 福州大学化肥催化剂国家工程研究中心, 福建 福州 310002
  • 收稿日期:2018-01-09 修回日期:2018-05-27 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: 陈晓晖,教授,博士生导师,研究方向为环境材料、循环经济和清洁生产新技术。
  • 作者简介:张国祥(1991-),男,硕士研究生,研究方向为能源与环境催化。E-mail:wundtzhang@163.com。

Research progress in metal catalysts for catalytic reduction of NO by CO with excess oxygen

ZHANG Guoxiang1,2, CHEN Xiaohui1,2   

  1. 1 School of Chemical Engineering, Fuzhou University, Fuzhou 350116, Fujian, China;
    2 National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, Fujian, China
  • Received:2018-01-09 Revised:2018-05-27 Online:2018-12-05 Published:2018-12-05

摘要: CO广泛存在于燃煤烟气及汽车尾气中,利用未完全燃烧的CO催化还原NO可同时脱除NO和CO,过程中催化剂起着决定性作用。本文对近年来含氧条件下CO催化还原NO的研究成果进行了系统梳理,重点关注了Pd系、Ir系、Cu系、其他贵金属及金属氧化物催化剂的研究进展,分析了催化剂制备方法、掺杂改性及反应条件对催化性能的影响,同时考察了O2浓度、H2O以及SO2对催化反应的影响,总结并对比了不同体系催化剂的活性位点及其催化机理,指明了O2在催化还原过程中的抑制机理,得出了几种体系催化剂催化CO还原NO的活性顺序。最后,针对富氧条件下CO催化还原NO所存在的问题和难点,提出深入研究O2抑制机理、降低贵金属用量、添加活性助剂是今后的研究方向。

关键词: 一氧化碳, 富氧条件, 烟道气, 一氧化氮催化还原, 催化剂

Abstract: Carbon monoxide is widely present in coal-fired flue gas and automobile exhaust. The catalytic reduction of NO by incompletely-burned CO can simultaneously remove NO and CO. The catalyst plays a decisive role in the process. In this paper, the recent research results of CO catalytic reduction of NO under oxygen are reviewed systematically. The catalyst preparation method, doping modification and reaction conditions of Pd based, Ir based, Cu based, other precious metals and metal oxide catalysts are analyzed. The effects of O2 concentration, H2O and SO2 on the catalytic reaction are also investigated. The active sites and catalytic mechanism of different catalysts are summarized and compared. The inhibition mechanism of O2 in the catalytic reduction process was proposed, and the catalytic activity sequence of these kinds of catalysts was obtained. Finally, the research directions of further study are given as the inhibition mechanism of O2, reducing the use of precious metals, and adding active additives.

Key words: carbon monoxide, oxygen enrichment, flue gas, nitric oxide catalytic reduction, catalyst

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn