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SO 2 promoted oxidative dehydrogenation of ethylbenzene
Author(s) -
Gaspar N. J.,
Vadekar M.,
Pasternak I. S.,
Cohen A. D.
Publication year - 1975
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450530112
Subject(s) - ethylbenzene , dehydrogenation , catalysis , diluent , styrene , stoichiometry , chemistry , oxide , inorganic chemistry , alkali metal , oxidative phosphorylation , sulfur dioxide , sulfur , materials science , organic chemistry , copolymer , biochemistry , polymer
It has been demonstrated that SO 2 acts as an efficient dehydrogenation agent in the conversion of ethylbenzene to styrene in the presence of alkali and alkaline earth metal oxide doped alumina and titania catalysts. Development of these catalysts, which give styrene yields of greater than 80% per pass, is described in the paper. The catalysts allow the use of close to stoichiometric amounts of sulphur dioxide, are active in the presence of steam diluent and show low deactivation with time. The effect of varying process conditions such as temperature, reactant concentration and diluent amount is also described.