陈新利,周爱奕,盛重义,杨柳,谭月

• 1:伊犁州环境监测站
• 2:南京师范大学环境学院
• 3:江苏省物质循环与污染控制重点实验室

摘要(Abstract)：

采用浸渍法分别制备K_2CO_3、K_2SO_4、KNO_3和KCl四种钾盐前驱体沉积的Mn-Ce/Ti O_2催化剂,通过分析催化剂活性与催化剂理化特性之间的关系,考察碱金属钾沉积对Mn-Ce/Ti O_2低温SCR催化剂脱硝性能的影响。结果显示,钾的加入会导致催化剂中毒,且不同钾前驱体掺杂对催化剂中毒效应不同。KNO_3的沉积对Mn-Ce/Ti O_2催化剂脱硝效率的影响最小,而KCl沉积对催化剂活性抑制作用最为强烈。通过X射线晶体衍射(XRD)和程序升温脱附(TPD)的方法对不同催化剂进行表征发现,催化剂的晶型变化、表面活性元素及酸性点位的减少是催化剂中毒的主要原因。

关键词(KeyWords)： 低温选择性催化还原;锰铈钛复合氧化物;碱金属;钾盐沉积;催化剂中毒

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51508281);; 江苏省自然科学基金(BK20130907)

作者(Author): 陈新利,周爱奕,盛重义,杨柳,谭月

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