Metals passivation

Details Metals passivation Metals passivation

1991-04-08

1992-03-17

Myers, Helane E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 52CT, 208121, 208115, 208113, 502521, C10G 1105

Patent

active

050965689

ABSTRACT:
A zeolite-containing catalytic cracking catalyst having been passivated by treatment with an aqueous solution which has been prepared by mixing an antimony oxide, ammonium bifluoride and water, at an atomic ratio of F:Sb in excess of about 6:1, 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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"Kirk-Othmer Encyclopedia of Chemical Technology", vol. 10, John Wiley & Sons, 1980, pp. 676 and 679.

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