铁基催化剂用于氨选择性催化还原氮氧化物研究进展
Research Progress in Iron-Based Catalysts for the Selective Catalytic Reduction of NOx by NH3
作者单位E-mail
张洪亮 安徽工业大学现代分析测试中心, 马鞍山 243002
安徽工业大学冶金工程学院, 马鞍山 243032
冶金减排与资源综合利用教育部重点实验室(安徽工业大学), 马鞍山 243002 
 
龙红明 安徽工业大学冶金工程学院, 马鞍山 243032
冶金减排与资源综合利用教育部重点实验室(安徽工业大学), 马鞍山 243002 
yaflhm@126.com 
李家新 安徽工业大学冶金工程学院, 马鞍山 243032
冶金减排与资源综合利用教育部重点实验室(安徽工业大学), 马鞍山 243002 
lijx@ahut.edu.cn 
董林 南京大学江苏省机动车尾气污染控制重点实验室, 南京 210093  
摘要: 氨选择性催化还原NOx技术可以有效控制氮氧化物的排放。V2O5-WO3(MoO3)/TiO2脱硝催化剂虽然已经工业化应用,但其工作温度偏高,不能满足低温宽工作温度窗口等工况的需要。因此,开发具有宽工作温度窗口的低温脱硝催化剂成为研究热点。其中,铁基催化剂因其具有良好的氧化还原性,以及储量丰富、价格低廉、无毒无害等特点,使其在低温氨选择性催化还原(NH3-SCR)反应中得到了广泛研究。基于Fe2O3在NH3-SCR催化体系中所起的作用不同,从Fe2O3作为载体、助剂、活性组分以及新型结构的铁基催化剂等方面系统地介绍了近年来铁基催化剂在NH3-SCR反应中的最新研究进展。此外,还总结了铁基催化剂的NH3-SCR反应机理以及抗水抗硫性,并对该领域未来可能的发展方向进行了展望。
关键词:   选择性催化还原  氮氧化物  烟气脱硝  构效关系
基金项目: 国家自然科学基金(No.51674002,21677069,21307001)、江苏省机动车尾气污染控制重点实验室开放基金(No.OVEC037)和安徽省博士后研究人员科研活动经费资助项目(No.2018B276)
Abstract: Selective catalytic reduction of NOx with NH3 is a powerful technique for the abatement of NOx. The operating temperature window of commercial V2O5-WO3(MoO3)/TiO2 denitration catalysts is too high to satisfy the requirements of low temperature and wide operating temperature window, and therefore the development of low-temperature denitration catalysts with wide operating temperature window becomes a hot spot of this research field in recent years. Iron-based catalysts are widely used in the low-temperature NH3-selective catalytic reduction (NH3-SCR) of NOx because of their good redox ability, rich resource reserves, low-cost, non-toxic and harmlessness, etc.. Based on the different roles of Fe2O3 in NH3-SCR catalysts, we have performed a systematic review of the latest research progress of iron-based catalysts in the NH3-SCR reaction for the following aspects:Fe2O3 used as support, promoter, active species, and iron-based catalysts with new structures. In addition, the NH3-SCR reaction mechanism and H2O/SO2 tolerance over iron-based catalysts are emphasized. Finally, the perspectives on the opportunities and challenges of iron-based catalysts for NH3-SCR in future research are presented.
Keywords: iron  selective catalytic reduction  nitrogen oxides  flue gas denitration  structure-activity relationships
投稿时间:2018-12-25 修订日期:2019-02-26
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张洪亮,龙红明,李家新,董林.铁基催化剂用于氨选择性催化还原氮氧化物研究进展[J].无机化学学报,2019,35(5):753-768.
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