Process for isomerizing trichlorobenzene
AssigneeToray Industries, Inc.
InventorsKazuyoshi Iwayama, Hiroaki Honda
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Abstract
A process for isomerizing trichlorobenzene is disclosed. In the process of the present invention, a mixture of trichlorobenzene isomers containing 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in small concentrations is contacted with a catalyst including acid type mordenite zeolite or acid type beta zeolite and a rhenium component and/or silver component in liquid phase in the presence of hydrogen, thereby increasing concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.
Claims16
A process for isomerizing trichlorobenzene comprising contacting, in liquid phase, a mixture of trichlorobenzene isomers containing trichlorobenzene selected from the group consisting of 1,3,5-trichlorobenzene and 1,2,3-trichlorobenzene in small concentrations with a catalyst selected from the group consisting of acid type mordenite zeolite and acid type beta zeolite, and a rhenium component and in the presence of hydrogen to increase concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.
A process for isomerizing trichlorobenzene comprising contacting, in liquid phase, a mixture of trichlorobenzene isomers containing trichlorobenzene selected from the group consisting of 1,3,5- trichlorobenzene and 1,2,3-trichlorobenzene in small concentrations with a catalyst selected from the group consisting of acid type mordenite zeolite and acid type beta zeolite, and a silver component in the presence of hydrogen to increase concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.
A process for isomerizing trichlorobenzene comprising contacting, in liquid phase, a mixture of trichlorobenzene isomers containing trichlorobenzene selected from the group consisting of 1,3,5-trichlorobenzene and 1,2,3-trichlorobenzene in small concentrations with a catalyst selected from the group consisting of acid type mordenite zeolite and acid type beta zeolite, and a rhenium component and a silver component in the presence of hydrogen to increase concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.
Dependencies are inferred from the claim text.