Process for the selective disproportionation reaction of olefins
AssigneeDirector-General of Agency of Industrial Science and Technology
InventorTadao Takahashi
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Abstract
In the disproportionation reaction of a linear olefin such as 1-butene cocted in the presence of a supported tungsten oxide catalyst such as a tungsten oxide-silica catalyst, isomerization of the olefin is inhibited and the conversion ratio for the disproportionation reaction of the olefin is increased by conducting the reaction in the presence of an amine compound such as ammonia or n-butylamine or a halogen compound such as chloroform.
Claims10
A process for the selective disproportionation reaction of olefins which comprises heating an olefin in a reaction zone to disproportionation temperature in the presence of a supported tungsten oxide catalyst and of an initial amount of at least one halogen compound and as the disproportionation reaction continues, introducing additional amounts of such halogen compound at least intermittently, said halogen compound being selected from the group consisting of chloroform, carbon tetrachloride, dibromomethane, 1,1-dibromoethane and butyl bromide.
A process for the selective disproportionation reaction of olefins which comprises heating an olefin in a reaction zone to disproportionation temperature in the presence of a supported tungsten oxide catalyst and of an initial amount of at least one amine compound and as the disproportionation reaction continues, introducing additional amounts of said amine compound at least intermittently, said amine compound being selected from the group consisting of ammonia, n-butylamine, isobutylamine, diethylamine, triethylamine and piperidine.
Dependencies are inferred from the claim text.