魏钰靓,刘祥祥,归柯庭,陈鑫,赵云飞

• 1:东南大学 能源与环境学院，江苏 南京 210096

摘要(Abstract)：

为了开发低温选择性催化还原（SCR）脱硝催化剂，采用混合法制备蜂窝状改性菱铁矿SCR脱硝催化剂，研究掺杂Mn改性对菱铁矿催化剂SCR脱硝活性的影响，并借助比表面积测试（BET）、X射线衍射分析（XRD）等手段对催化剂进行表征。结果表明，菱铁矿粉末与偏钛酸以7：3比例混合，添加硝酸锰和其他黏合剂，经搅拌混合、挤出成型、高温煅烧等工序，可制备出成型好、强度高、催化脱硝活性强的蜂窝状改性菱铁矿SCR脱硝催化剂。掺杂Mn改性后增大了催化剂的比表面积和表面酸性，降低了结晶度，使催化剂的中低温催化脱硝效率有较大提高，在180~270℃反应温度区间高于90%。能应用于燃煤锅炉尾部低温低尘烟气的SCR脱硝。

关键词(KeyWords)： 蜂窝状;改性;SCR;脱硝;菱铁矿

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（51276039）；江苏省环保科研课题（2015008）。

作者(Author): 魏钰靓,刘祥祥,归柯庭,陈鑫,赵云飞

DOI: 10.3969/j.issn.1003-9015.2019.06.014

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