Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-11-08
1979-10-16
Dees, Carl
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252455R, 252460, 208120, B01J 2906, B01J 2912
Patent
active
041712862
ABSTRACT:
A novel particulate material for promoting combustion of carbon monoxide to carbon dioxide in the regeneration zone of a cyclic fluid cracking process without substantially affecting the ability of separate fluid cracking catalyst particles containing an active crystalline zeolitic aluminosilicate component to catalyze the hydrocarbon conversion reaction in the conversion zone. The novel promoter particles comprise coherent, catalytically inert microspheres of calcined kaolin clay having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of about 2/1, a surface area (B.E.T.) in the range of about 10 to 15 m.sup.2 /g., a pore volume (as determined by nitrogen absorption) in the range of about 0.02 to 0.04 cc./gm., the calcined microspheres being impregnated with a trace amount of a platinum compound and being free from a component capable of cracking hydrocarbons in the absence of added hydrogen.
REFERENCES:
patent: 2651598 (1953-09-01), Ciapetta
patent: 3364136 (1968-01-01), Chen et al.
patent: 3647183 (1972-03-01), Haden, Jr. et al.
patent: 3746659 (1973-07-01), Horzepa
patent: 4072600 (1978-02-01), Schwartz
Dight Lawrence B.
Kennedy James V.
Dees Carl
Engelhard Minerals & Chemicals Corporation
Moselle Inez L.
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