Catalyst modification for shape selective hydrocarbon conversion

Details Catalyst modification for shape selective hydrocarbon conversion Catalyst modification for shape selective hydrocarbon conversion

1994-08-25

1996-09-03

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

502263, B01J 2906

Patent

active

055523579

ABSTRACT:
A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedstream under conversion conditions with a catalytic molecular sieve which has been modified by treatment with an amino silane polymer while molecular sieve acid sites are protected. When the process is toluene disproportionation, a toluene feedstream may also contain a second silicon source which is a high p-xylene selectivating agent. The invention also includes the modification method and the shape selective catalyst which results from the modification.

REFERENCES:
patent: 4080284 (1978-03-01), Mitchell
patent: 4640901 (1987-02-01), Lee et al.
Roberts & Casero, Basic Principles of Organic Chemistry, 2nd ed. 1997 by W. A. Benjamin, IRL pp. 529 and 1419.

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