Christine S Conway

US Patent:

53027329, Apr 12, 1994

Filed:

Sep 14, 1992

Appl. No.:

7/944571

Inventors:

Karl Z. Steigleder - Glen Ellyn IL
Christine M. Conway - Rogers Park IL
David M. Baldwin - Bolingbrook IL
Diane C. Dierking - Orland Park IL

Assignee:

UOP - Des Plaines IL

International Classification:

C07C 4100
C07C 3912
C07C 264
C07C 15107

US Classification:

554 98

Abstract:

Silica-aluminas having a sodium content less than about 0. 1 weight percent show increased stability when used as a catalyst for the alkylation of aromatic compounds. Where such silica-aluminas are used as the catalyst in detergent alkylation their increased stability permits continuous alkylation to be performed at lower temperatures, as a result of which the detergent alkylate product shows an incrementally higher linearity. Fluorided silica-aluminas having a sodium content of under 0. 05 weight percent are particularly advantageous.