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Fe-ZSM-5分子筛上NO和N2O吸附行为及NO助N2O催化分解机理的研究
  • ISSN号：1003-4978
  • 期刊名称：《河南大学学报：自然科学版》
  • 时间：0
  • 分类：O643[理学—物理化学;理学—化学] X7[环境科学与工程—环境工程]
  • 作者机构：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029, [2]河南大学化学化工学院,河南开封475001
  • 相关基金：国家杰出青年科学基金（20625621）
作者： 亢红霞[1], 郭泉辉[1,2], 李建伟[1], 李英霞[1]
关键词： Fe-ZSM-5, NO, N2O, NO2, 原位漫反射红外光谱, Fe-ZSM-5, NO, NeO, NO2, in situ diffuse reflectance infrared Fourier transform spectroscopy
中文摘要：

利用原位漫反射红外光谱法考察了NO和N2O在液相离子交换法制备的Fe-ZSM-5分子筛上的吸附行为,并对NO助N2O催化分解的机理进行了研究.结果表明,NO和N2O均可吸附在Fe-ZSM-5分子筛表面的Br nsted酸性位和价键补偿铁离子位上;且在高温下,NO和N2O均主要以价键补偿Fe离子的形式吸附在分子筛上.NO和O2在Fe-ZSM-5表面可反应生成N2O4、NO2和NO3-或NO2-;NO与N2O分解释放的O反应生成NO2,因而能起到加速N2O分解和提高Fe-ZSM-5分子筛催化活性的作用.

英文摘要：

Both the NO and N2O adsorption behaviors over Fe-ZSM 5 zeolite prepared by ion-exchanged and the NO assisted mechanism to N2O decomposition were studied by in situ diffuse reflectance infrared Fourier transform spectroscopy （DRIFTS）. The results showed that NO and N2O could both adsorb the BrOnsted acid sites and charge balancing Fe-cation sites of the Fe-ZSM-5 zeolite. During the high temperatures, NO and N2O both adsorbed on charge-balancing Fe-cation sites of the Fc ZSM-5 zeolite. NO could react with O2 to form N2O4 , NO2, NO3- or NO2- over FeZSM-5 zeolite. In the decomposition, the existence of NO consumed the active O is produced by NeO decomposition. The action accelerates N2O decomposition, and enhances Fe-ZSM-5 catalytic activity.

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期刊信息
  • 《河南大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:河南省教育厅
  • 主办单位:河南大学
  • 主编：乔家君
  • 地址：河南省开封市明伦街85号
  • 邮编：475001
  • 邮箱：xbzrb@henu.edu.cn
  • 电话：0378-2860394
  • 国际标准刊号：ISSN：1003-4978
  • 国内统一刊号：ISSN：41-1100/N
  • 邮发代号:36-27
  • 获奖情况:
  • 河南省优秀科技期刊一等奖,河南省高校优秀自然科学学报,全国学术期刊规范执行优秀奖
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,德国数学文摘,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）
  • 被引量:5635