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Dehydrogenation of Propane to Propylene in the Presence of CO 2 over Steaming‐treated HZSM‐5 Supported ZnO
Author(s) -
Zhang Fan,
Miao Changxi,
Yue Yinghong,
Hua Weiming,
Gao Zi
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201100379
Subject(s) - dehydrogenation , chemistry , propane , catalysis , coke , steaming , propene , inorganic chemistry , organic chemistry , food science
Dehydrogenation of propane to propylene over zinc oxide catalysts supported on steaming‐treated HZSM‐5 in the presence of CO 2 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 propylene yields of 29.7% and 20.3% at the initial and steady states, respectively, in the catalytic dehydrogenation of propane at 600°C. The superior catalytic performance of this catalyst can be attributed to high dispersion of ZnO and appropriate Br?nsted acidity of the HZSM‐5(650) support. The catalytic stability is enhanced by the addition of CO 2 to the feed gas due to the suppression of coke formation.