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Transformation of light alkenes over templated and non-templated ZSM-5 zeolites

被引：12
作者：
Dzikh, IP
Lopes, JM
Lemos, F
Ribeiro, FR
机构：
[1] Inst Super Tecn, Ctr Engn Biol & Quim, P-1096 Lisbon, Portugal
[2] State Univ Lvivska Polytech, Petr Refinery Engn Dept, UA-290646 Lviv 13, Ukraine
来源：
APPLIED CATALYSIS A-GENERAL | 1999年 / 177卷 / 02期
关键词：
ethene; propene; i-butene; templated and non-templated ZSM-5; acidity; catalytic activity;
D O I：
10.1016/S0926-860X(98)00272-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The transformations of ethene, propene and i-butene over templated (CVN) and non-templated (CVM) ZSM-5 zeolites at 350 degrees C were examined. The initial activity values obtained for the conversion of C2H4 were significantly higher with H-CVM than with H-CVN zeolite, in accordance with the stronger acidity of its sites. Tn contrast, for the transformation of C3H6 and i-C4H8 the opposite order was observed: the more acidic catalyst presents a lower activity. It was also observed that, in the case of CVM, the sodium-exchanged CVM samples have higher activities than the H form. These observations can be related to the extremely high acidity of the CVM samples. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：245 / 255
页数：11
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