| 固体多核 NMR 研究 Mo/Hβ-Al2O3 催化剂在烯烃歧化反应中的积炭 |
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| 引用本文： | 黄慧娟,刘宪春,刘盛林,刘秀梅,徐龙伢,韩秀文,张维萍,包信和.固体多核 NMR 研究 Mo/Hβ-Al2O3 催化剂在烯烃歧化反应中的积炭[J].催化学报,2010,31(2):186-190. |
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| 作者姓名： | 黄慧娟 刘宪春 刘盛林 刘秀梅 徐龙伢 韩秀文 张维萍 包信和 |
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| 作者单位： | 1. 中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023;中国科学院研究生院,北京,100049
2. 中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023 |
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| 基金项目： | 国家重点基础研究发展计划(973计划,2009CB623507);;国家自然科学基金(20773120) |
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| 摘 要： | 采用固体多核 13C, 27Al 及 29Si MAS NMR 结合吸附气体 Xe 后的 129Xe NMR, 详细研究了乙烯和 2-丁烯歧化生成丙烯反应过程中 6%Mo/Hβ-Al2O3 催化剂上积炭的类型和落位. 结果表明, 积炭以饱和烷烃为主, 并随着反应的进行生成更多的支链烷烃, 积炭主要分布在 Hβ 分子筛上, 并主要落位在分子筛的交叉孔道处.
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| 关 键 词： | 烯烃歧化 钼 氧化铝 Hβ 分子筛 丙烯 固体核磁共振 氙 |
| 收稿时间： | 2010-02-25 |
Multinuclear Solid-State NMR Characterization of the Coke on Mo/Hβ-Al_2O_3 Catalyst for Olefin Metathesis |
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| HUANG Huijuan,LIU Xianchun,LIU Shenglin,LIU Xiumei,XU Longya,HAN Xiuwen,ZHANG Weiping,BAO Xinhe.Multinuclear Solid-State NMR Characterization of the Coke on Mo/Hβ-Al_2O_3 Catalyst for Olefin Metathesis[J].Chinese Journal of Catalysis,2010,31(2):186-190. |
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| Authors: | HUANG Huijuan LIU Xianchun LIU Shenglin LIU Xiumei XU Longya HAN Xiuwen ZHANG Weiping BAO Xinhe |
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| Institution: | 1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Multinuclear solid-state ~(13)C, ~(27)Al, and ~(29)Si MAS NMR and ~(129)Xe NMR were used to study the carbon deposition on the 6%Mo/Hβ-Al_2O_3 catalyst in metathesis of ethene and 2-butene to propene. The results showed that the coke composition was aliphatic hy-drocarbons, and the most of them was present in Hβ zeolite instead of in Al_2O_3. The ~(129)Xe NMR experiments clearly revealed that the depos-ited carbon was located at the positions of channel intersections in HI3 zeolite, which caused the deactivation of the catalyst. |
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| Keywords: | olefin metathesis molybdenum alumina propene solid-state nuclear magnetic resonance ~(129)Xe |
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