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U.S. Department of Energy
Office of Scientific and Technical Information

Promotion of cracking catalyst octane yield performance

Patent ·
OSTI ID:5556108
A process is provided 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, in one embodiment, is a crystalline aluminosilicate zeolite having a silica to alumina mole ratio greater than about 12 and a constraint index within the approximate range of 1 to 12.
Assignee:
Mobil Corp
Patent Number(s):
US 4309280
OSTI ID:
5556108
Country of Publication:
United States
Language:
English