Title: Passivating metals on cracking catalysts

Abstract: Metals such as nickel, vanadium and iron contaminating a cracking catalyst are passivated by contacting the cracking catalyst under elevated temperature conditions with antimony selenide, antimony sulfide, antimony sulfate, bismuth selenide, bismuth sulfide, or bismuth phosphate.

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Inventors: McKay, Dwight L. (Bartlesville, OK, US)

Application Number: 819027
Filing Date: 1977-07-26
Publication_date: 1979-02-27
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 502/215 208/120.2, 208/120.35, 502/216, 502/217
Other Classes:
US Patent Ref:

2645605	Jul, 1953	Lang et al.	252/464.
3417157	Dec, 1968	Pollitzer	252/456.
3711422	Jan, 1973	Johnson et al.	252/414.
3977963	Aug, 1976	Readal et al.	208/120.
4025458	May, 1977	McKay	252/416.

Other Refs:
Primary Examiner: Dees, Carl
Assistant Examiner:
Attorney: