Metals passivation-zeolite containing cracking catalysts

Details Metals passivation-zeolite containing cracking catalysts Metals passivation-zeolite containing cracking catalysts

1990-04-04

1991-08-06

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 26, 502521, B01J 2906, B01J 3808

Patent

active

050377868

ABSTRACT:
A zeolite containing catalytic cracking catalyst is passivated by treatment with an aqueous solution which has been prepared by mixing an antimony oxide, ammonium bifluroide and water. The thus-passivated catalyst is used in a process for catalytically cracking a hydrocarbon-containing feed, in particular one which contains metal impurities. In one embodiment, the above-described aqueous solution is injected into the feed. In other embodiments, the solution is injected into the cracking zone or into a catalyst regeneration zone.

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patent: 4935121 (1990-06-01), Fu et al.
patent: 4954244 (1990-09-01), Fu et al.
"Comprehensive Inorganic Chemistry", vol. 2, by J. C. Bailar et al., 1973, Pergamon Press; pp. 642-644, and 1050-1052.
"Kirk-Othmer Encyclopedia of Chemical Technology", vol. 10, John Wiley & Sons, 1980, pp. 676 and 679.

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