| 硅烷化处理对Mo/HZSM-5催化剂上甲烷脱氢芳构化活性的影响 |
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| 引用本文： | 王红霞,谭大力,徐奕德,包信和.硅烷化处理对Mo/HZSM-5催化剂上甲烷脱氢芳构化活性的影响[J].催化学报,2004,25(6):445-449. |
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| 作者姓名： | 王红霞 谭大力 徐奕德 包信和 |
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| 作者单位： | 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规划项目 (G19990 2 2 40 6) . |
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| 摘 要： | 结合催化剂的活性评价及固体高分辨核磁共振谱、X射线光电子能谱和X射线荧光光谱和热重等技术,考察了硅烷化处理对Mo/HZSM-5催化剂上甲烷脱氢芳构化活性的影响. 结果表明,采用大分子有机硅烷对HZSM-5分子筛进行硅烷化处理,除去了分子筛外表面的酸性位,并使分子筛本身发生了脱铝. 硅烷化处理使Mo/HZSM-5催化剂在进行甲烷脱氢芳构化反应时催化剂上总的积碳量明显减少,从而提高了催化剂的活性.
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| 关 键 词： | 钼 HZSM-5分子筛 硅烷化 甲烷 脱氢芳构化 Bronsted酸 积碳 |
| 文章编号： | 0253-9837(2004)06-0445-05 |
| 收稿时间： | 2004-06-25 |
Effect of Silanation of HZSM-5 Zeolite on Catalytic Performance of Mo/HZSM-5 in Methane Dehydro-aromatization |
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| WANG Hongxia,TAN Dali,XU Yide,BAO Xinhe.Effect of Silanation of HZSM-5 Zeolite on Catalytic Performance of Mo/HZSM-5 in Methane Dehydro-aromatization[J].Chinese Journal of Catalysis,2004,25(6):445-449. |
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| Authors: | WANG Hongxia TAN Dali XU Yide BAO Xinhe |
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| Institution: | WANG Hongxia,TAN Dali,XU Yide,BAO Xinhe * |
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| Abstract: | Combining the 1H MAS NMR, XPS, XRF and TG measurements with the catalyst evaluation, the effect of silanation of HZSM-5 zeolite on the catalytic performance of the Mo/HZSM-5 catalyst in methane dehydro-aromatization was investigated. The results showed that the silanation of HZSM-5 zeolite resulted in not only the removal of the external acid sites but also the dealumiantion of HZSM-5 zeolite, which led to an improvement in the catalytic performance of Mo/HZSM-5 catalyst in the methane dehydro-aromatization owing to the suppression of formation of carbon deposited on Mo/HZSM-5 catalyst. |
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| Keywords: | molybdenum HZSM-5 zeolite silanation methane dehydro-aromatization Brnsted acid carbon deposit |
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