Dehydrogenation of Propane to Propylene in the Presence of CO2 over Steaming-treated HZSM-5 Supported ZnO

Dehydrogenation of propane to propylene over zinc oxide catalysts supported on steaming-treated HZSM-5 in the presence of CO2 has been investigated. The highest catalytic performance can be achieved on the 5%ZnO/HZSM-5（650） catalyst with the HZSM-5 support steaming at 650 ~C, which allows the maximu...

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Bibliographic Details
Published in:Chinese journal of chemistry 2012-04, Vol.30 (4), p.929-934
Main Author: 张帆 缪长喜 乐英红 华伟明 高滋
Format: Article
Language:English
Subjects:
CO2
dehydrogenation
HZSM-5
stability
steaming-treated HZSM-5
supported catalysts
ZnO
丙烯产率
丙烷脱氢
催化剂
催化性能
蒸处
过氧化锌
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Summary:Dehydrogenation of propane to propylene over zinc oxide catalysts supported on steaming-treated HZSM-5 in the presence of CO2 has been investigated. The highest catalytic performance can be achieved on the 5%ZnO/HZSM-5（650） catalyst with the HZSM-5 support steaming at 650 ~C, which allows the maximum propyl- ene yields of 29.7% and 20.3% at the initial and steady states, respectively, in the catalytic dehydrogenation of pro- pane at 600 ~C. The superior catalytic performance of this catalyst can be attributed to high dispersion of ZnO and appropriate Bronsted acidity of the HZSM-5（650） support. The catalytic stability is enhanced by the addition of CO2 to the feed gas due to the suppression of coke formation.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201100379