Zeolite beta and its use in aromatic alkylation

Details Zeolite beta and its use in aromatic alkylation Zeolite beta and its use in aromatic alkylation

1996-07-12

1998-03-03

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585446, 585470, 585475, C07C 268, C07C 552

Patent

active

057237107

ABSTRACT:
There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding energies as measured by X-ray photoelectron spectroscopy, of at least 74.8 electron volts. This surface-modified zeolite beta is prepared by treating a templated zeolite beta with an acid at a pH between about 0 and about 2 and a temperature up to about 125.degree. C. for a time sufficient to modify the chemical environment of the surface aluminum atom without bringing about dealumination of the zeolite beta.

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patent: 5522984 (1996-06-01), Gajda et al.
"Encyclopedia of Chemical Processing and Design," J. J. McKetta and W. A. Cunningham, Editors, V. 14, pp. 33-51 (1982).

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