Para-selective zeolite catalysts treated with halogen compounds

Details Para-selective zeolite catalysts treated with halogen compounds Para-selective zeolite catalysts treated with halogen compounds

1982-08-30

1986-04-08

Dixon, Jr., William R.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

502 71, 502 85, C01B 3328

Patent

active

045812152

ABSTRACT:
A process is provided for modifying ZSM-5 type zeolite catalysts with halogen-based treating agents in order to enhance the para-selective properties of such catalysts for the conversion of aromatic materials to dialkyl-substituted benzene compounds. Halogen-based treating agents include HCl, HBr, Cl.sub.2, CCl.sub.4, GeCl.sub.4 and mixtures thereof. Catalyst compositions so treated can be used in alkylation, transalkylation or disproportionation processes to provide product mixtures having exceptionally high concentrations of the para-dialkylbenzene isomer.

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Yashima et al., "Journal of Catalysis" 17, 151-156, 1970.
Minachev et al., "Chemistry Reviews", vol. 2 (1980), pp. 1-6.

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