金属铁与丙烯共同还原NO的特性与机理

梁俊青 苏亚欣 周皞 邓文义

引用本文: 梁俊青, 苏亚欣, 周皞, 邓文义. 金属铁与丙烯共同还原NO的特性与机理[J]. 燃料化学学报, 2016, 44(08): 977-984. shu
Citation:  LIANG Jun-qing, SU Ya-xin, ZHOU Hao, DENG Wen-yi. Performance and mechanism of NO reduction by iron combined with propene[J]. Journal of Fuel Chemistry and Technology, 2016, 44(08): 977-984. shu

金属铁与丙烯共同还原NO的特性与机理

    通讯作者: 苏亚欣
  • 基金项目:

    国家自然科学基金(51278095)资助 

摘要: 研究了丙烯在金属铁作用下还原NO的特性。采用陶瓷管流动反应器在300-1100℃研究了不同条件下的NO还原效率,考察了SO2的影响,采用XRD、SEM和EDS分析了反应后金属铁表面的组分和微观结构特征。结果表明,丙烯在金属铁作用下具有良好的NO还原效果。在N2气氛,温度超过800℃后,金属铁作用下丙烯还原NO的效率达到了95%以上。在模拟烟气、富燃料条件下,温度高于900℃时,丙烯与金属铁还原NO的效率超过了90%。SO2对丙烯在金属铁作用下还原NO的效率影响很小。机理分析表明,当丙烯与金属铁共同还原NO时,一方面,NO被金属铁直接还原,同时丙烯还原氧化铁为金属铁;另一方面,丙烯通过再燃机理还原NO,同时再燃中间产物被氧化铁氧化为N2

English

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  • 收稿日期:  2016-03-15
  • 网络出版日期:  2016-05-11
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