Promotion of cracking catalyst octane yield performance

Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking

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208111, C10G 1102

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active

045212988

ABSTRACT:
A process for increasing gasoline octane number and/or total gasoline yield in catalytic cracking units by the addition of a very small amount of finely divided shape selective additive promoter, which additive promoter is not intimately combined with a substantial amount of another solid prior to contact with the cracking catalyst. The additive promoter is a zeolite characterized by a silica to alumina mole ratio greater than about 500 and a constraint index within the approximate range of 1 to 12.

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Shankland & Schmitkons, "Determination of Activity and Selectivity of Cracking Catalyst", Proc. API 27 (III), 1947, pp. 57-77.

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