| 不同硅铝比Cu-ZSM-5纳米片上N2O催化分解 |
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| 引用本文： | 邹薇,谢鹏飞,李旭光,孔德金,华伟明,乐英红,高滋.不同硅铝比Cu-ZSM-5纳米片上N2O催化分解[J].无机化学学报,2016,32(1):89-95. |
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| 作者姓名： | 邹薇 谢鹏飞 李旭光 孔德金 华伟明 乐英红 高滋 |
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| 作者单位： | 复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433;中国石油化工股份有限公司上海石油化工研究院, 上海 201208,复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433,中国石油化工股份有限公司上海石油化工研究院, 上海 201208,中国石油化工股份有限公司上海石油化工研究院, 上海 201208,复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433,复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433,复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433 |
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| 基金项目： | 国家自然科学基金(No.21273043)和上海市科学技术委员会项目(No.08DZ2270500)资助。 |
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| 摘 要： | 以双季铵盐表面活性剂为模板剂,水热条件下合成了硅铝比(nSi/nAl)为18、26和95的ZSM-5沸石纳米片,采用离子交换方法制备了铜改性的ZSM-5纳米片样品,并测试了其催化分解N_2O性能。结合X射线衍射(XRD)、N_2吸附/脱附、X射线荧光光谱(XRF)、扫描电镜(SEM)、透射电镜(TEM)、氢气程序升温还原(H_2-TPR)、氧气程序升温脱附(O_2-TPD)和原位红外漫反射光谱(CODRIFT)等表征结果 ,探讨了沸石硅铝比对于催化剂N_2O分解性能的影响及其原因。结果表明,ZSM-5纳米片硅铝比越低,CuZSM-5纳米片催化剂的活性越高。催化活性的提高归因于低硅铝比催化剂上Cu~+活性物种可还原性的增强和吸附氧脱附能力的提高。
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| 关 键 词： | Cu-ZSM-5 纳米片 硅铝比 氧化亚氮 催化分解 |
| 收稿时间： | 2015/7/27 0:00:00 |
| 修稿时间： | 2015/10/28 0:00:00 |
Catalytic Decomposition of N2O over Cu-ZSM-5 Nanosheets with Different nSi/nAl |
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| ZOU Wei,XIE Peng-Fei,LI Xu-Guang,KONG De-Jin,HUA Wei-Ming,YUE Ying-Hong and GAO Zi.Catalytic Decomposition of N2O over Cu-ZSM-5 Nanosheets with Different nSi/nAl[J].Chinese Journal of Inorganic Chemistry,2016,32(1):89-95. |
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| Authors: | ZOU Wei XIE Peng-Fei LI Xu-Guang KONG De-Jin HUA Wei-Ming YUE Ying-Hong and GAO Zi |
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| Institution: | Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;Shanghai Research Institute of Petrochemical Technology SINOPEC, Shanghai 201208, China,Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China,Shanghai Research Institute of Petrochemical Technology SINOPEC, Shanghai 201208, China,Shanghai Research Institute of Petrochemical Technology SINOPEC, Shanghai 201208, China,Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China,Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China and Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China |
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| Abstract: | ZSM-5 nanosheets with Si/Al molar ratios of 18, 26 and 95 have been synthesized hydrothermally using C18H37-N+(CH3)2-C6H12-N+(CH3)2-C6H13]Br2 as a template and then ion-exchanged with Cu2+ cations. The obtained Cu-ZSM-5 nanosheets were characterized by XRF, N2 adsorption-desorption, XRD, SEM, TEM, DRIFTS, H2-TPR, O2-TPD and CO-DRIFT. Their catalytic performance for N2O decomposition was investigated. The catalytic activity in terms of TOF for Cu-ZSM-5 nanosheets increases with the decreasing of the nSi/nAl, due to better reducibility of active Cu+ species, and better desorption capability of adsorbed oxygen on Cu-ZSM-5 nanosheets with lower nSi/nAl. |
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| Keywords: | Cu-ZSM-5 nanosheets nSi/nAl N2O catalytic decomposition |
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