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H 2 S Promoted Oxidative Dehydrogenation of Hydrocarbons in Molten Media
Author(s) -
Gaspar N. J.,
Pasternak I. S.,
Vadekar M.
Publication year - 1974
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.5450520615
Subject(s) - dehydrogenation , propane , butane , ethylbenzene , chemistry , yield (engineering) , olefin fiber , molten salt , ethylene , catalysis , space velocity , propene , styrene , exothermic reaction , butene , organic chemistry , inorganic chemistry , photochemistry , materials science , selectivity , metallurgy , polymer , copolymer
The H 2 S promoted oxidative dehydrogenation of butane to butadiene can be efficiently carried out if a molten salt medium, e.g. LiCl/KCl, is used to dissipate the heat from the highly exothermic reaction. The reaction is catalyzed by the addition of soluble salts such at Tl 2 O 3 , BaCl 2 or MnCl 2 . Optimization of reaction conditions by varying temperature, space velocity and quantity of promoter results in a 53% olefin yield (5% butenes, 48% butadiene) at 80% butane conversion. The system is also shown to be efficient for the dehydrogenation of ethane to ethylene, propane to propylene, butene to butadiene and ethylbenzene to styrene.