| 负载型丝光沸石催化剂的催化性能研究 |
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| 引用本文： | 柴章民,李承烈,黄国雄,盛世善,徐奕德.负载型丝光沸石催化剂的催化性能研究[J].华东理工大学学报(自然科学版),1993(6). |
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| 作者姓名： | 柴章民 李承烈 黄国雄 盛世善 徐奕德 |
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| 作者单位： | 华东理工大学石油加工研究所
(柴章民，李承烈，黄国雄)，中国科学院大连化学物理研究所
(盛世善)，中国科学院大连化学物理研究所(徐奕德) |
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| 摘 要： | 运用二元碱氮置换吸附红外光谱法、分子筛孔径分布测定技术、XPS技术,考察了丝光沸石表面酸性与孔结构的相互关系、钯在丝光沸石上分布情况和价态及其与沸石的相互作用。结果表明,随着丝光沸石脱铝程度的增加,表面出现大量不规整晶格,存在较多的次级孔道。强质子酸中心主要分布在它的“外表面”。钯在其表面富集,并与“外表面”上的质子酸中心协同作用,促进了轻质烷烃异构化反应。
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| 关 键 词： | 沸石 孔分布 酸性质 钯 次级孔 催化 |
Study on the Properties of Supported Mordenite Catalysts |
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| Chai Zhangmin,Li Chengliea,Huang Guoxionga,Sheng Shishanb and Xu Yideb a: Petroleum Processing Research Center,ECUST b: Dalian Institute of Chemical Physics,Chinese Academy of Science.Study on the Properties of Supported Mordenite Catalysts[J].Journal of East China University of Science and Technology,1993(6). |
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| Authors: | Chai Zhangmin Li Chengliea Huang Guoxionga Sheng Shishanb and Xu Yideb a: Petroleum Processing Research Center ECUST b: Dalian Institute of Chemical Physics Chinese Academy of Science |
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| Institution: | Chai Zhangmin~*,Li Chenglie~a,Huang Guoxiong~a,Sheng Shishan~b and Xu Yide~b a: Petroleum Processing Research Center,ECUST b: Dalian Institute of Chemical Physics,Chinese Academy of Science |
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| Abstract: | The relationship between surface acidity and pore structure of mordenite was investigated by FT-IR of binary basic nitrogen compounds displacement, BET and pore size distribution calculated using MP method. The distribution, surface state and interaction of palladium on mordenite were studied by XPS. It is shown that large number of irregular framework and secondary pore will emerge on the surface of mordenite as its dealuminized extent increases. The stronger Bronsted acid site is mainly distributed on the external surface, the more palladium exists on the surface of mordenite. An isomerization of light paraffin is promoted by the interaction between palladium and Bronsted acid site on external surface of mordenite. |
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| Keywords: | zeolite pore size distribution acidity palladium secondary pore catalysis |
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