Sulfur transfer cracking catalyst

Details Sulfur transfer cracking catalyst Sulfur transfer cracking catalyst

1978-12-26

1981-01-06

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2908, B01J 2912

Patent

active

042435579

ABSTRACT:
An improved catalyst, and process utilizing said catalyst for catalytically cracking a sulfur-containing hydrocarbon feed, and for the fixation of sulfur by the catalyst and transfer thereof from the catalyst regeneration zone to the reaction zone of a catalytic cracking unit. The catalyst comprises an admixture of composite particles, one present in major concentration for providing principally cracking and combustion promoting functions, and the other present in minor concentration for providing principally sulfur fixation and transfer functions. The particle present in major concentration, on the one hand, is constituted essentially of one or more Group VIII noble metals, preferably platinum, composited with a support comprised of a crystalline alumino silicate component distributed in an active cracking catalyst matrix, suitably one constituted of silica-alumina. The minor component particle, on the other hand, is comprised of one or more Group II-A metals, preferably magnesium, composited with a support, suitably silica-magnesia or silica-alumina, which may also contain a crystalline aluminosilicate zeolite component dispersed within thesilica-magnesia or silica-alumina support matrix.

REFERENCES:
patent: 3304254 (1967-02-01), Eastwood et al.
patent: 3835031 (1974-09-01), Bertolacini et al.
patent: 4072600 (1978-02-01), Schwartz
patent: 4115250 (1978-09-01), Flanders et al.

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