刘庆航,晏乃强,瞿赞,赵松建,徐浩淼

• 1:上海交通大学环境科学与工程学院

摘要(Abstract)：

针对适用于焦化烟气的溴掺杂钒钛催化剂,为进一步探索其脱硝机理及动力学规律,研究采用浸渍法制备V/Br-Ti催化剂,从瞬态动力学和稳态动力学的角度对催化剂进行反应动力学研究。结果表明,在250℃时4V5Br-Ti催化剂的脱硝效率达到98%;在V/Br-Ti催化剂上进行的SCR反应机制是吸附态的NH_3与气态或弱吸附态的NO发生反应;O_2是以气态氧、表面吸附氧和晶格氧三种形态参与SCR反应的。在实验条件下,V/Br-Ti催化剂的NH_3、O_2、NO反应级数分别为0、0.5、1级。4V5Br-Ti催化剂SCR表观反应活化能为35.4 k J×mol~(-1),低于目前商用的钒钛基脱硝催化剂,表明该催化剂具有较高的反应活性,具有一定的实际工业应用潜力。

关键词(KeyWords)： 选择性催化还原(SCR);V/Ti催化剂;Br;动力学;活化能

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973计划)(2013CB430005);; 国家自然科学基金(51478261)

作者(Author): 刘庆航,晏乃强,瞿赞,赵松建,徐浩淼

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