Para-selective butylation of phenol over fairly large-pore zeolites
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, Stuart D. Hellring
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Abstract
There is provided a process for reacting phenol with butene or butanol over fairly large-pore zeolites to give butylphenol with high para-selectivity. Particular zeolites for use in this reaction include ZSM-12 and zeolite beta. A particular butene or butanol reactant is isobutanol. The product of this reaction may have a high content of the mono-alkylated, tert-butyl product.
Claims8
A process for preparing para-tert-butylphenol, said process comprising reacting phenol with butene or butanol over a catalyst under conditions sufficient to produce said para-tert-butylphenol, said catalyst comprising a zeolite having a Constraint Index of from 1 to 3, wherein said conditions include a temperature of at least 25.degree. C., a pressure of from 0 up to 5000 psig, and a liquid hourly space velocity of from 0.1 to 5 hr.sup.-1.
A process for preparing para-tert-butylphenol, said process comprising reacting phenol with butene or butanol over a catalyst under conditions sufficient to produce said para-tert-butylphenol, said catalyst comprising a zeolite selected from the group consisting of ZSM-12, zeolite beta and MCM-22, wherein said conditions include a temperature of at least 25.degree. C., a pressure of from 0 up to 5000 psig, and a liquid hourly space velocity of from 0.1 to 5 hr.sup.-1.
Dependencies are inferred from the claim text.