Ca modified ZSM-5 for high propylene selectivity from methanol

被引：40
作者：
Zhang, Suhong [1 ,2 ]
Zhang, Bianling [1 ,2 ]
Gao, Zhixian [1 ]
Han, Yizhuo [1 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2010年 / 99卷 / 02期
关键词：
Methanol; Propylene; Ca modification; ZSM-5; CATALYTIC PERFORMANCE; HZSM-5; ZEOLITES; OLEFIN REACTION; DIMETHYL ETHER; CALCIUM; IMPROVEMENT; CONVERSION; ACIDITY;
D O I：
10.1007/s11144-009-0131-0
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 highest propylene selectivity and best catalytic stability were gained over Ca modified ZSM-5 that had little free Bronsted acid sites, which indicated that Ca interacted with Bronsted acid sites and thus participated in the catalytic reaction as supported by the MTO data of Na modified ZSM-5. A possible mechanism that involves the formation of acid-base centers by hydrolyzing Ca species in the presence of water is suggested.
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收藏
页码：447 / 453
页数：7
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