Hydrocarbon conversion with octane-enhancing catalysts

Patent · Tue Mar 19 04:00:00 EST 1991

OSTI ID:5117974

Pecoraro, T A

This patent describes a catalyst composition for increasing the octane and yield of gasoline produced from a fluid catalytic cracking process. It comprises large pore zeolite; natural or synthetic clay; and, an amorphous silica-alumina matrix, the matrix prepared by steps comprising preparing a mixture comprising silica sol and an aluminum salt while maintaining the pH of the mixture below about 4, and precipitating from the mixture by adjusting the pH; wherein the composition is prepared by steps comprising: combining the zeolite, clay, and cogel, provided that the pH of the cogel or the combination containing the cogel is adjusted to between about 4 and 7, and conditions are controlled to induce syneresis and viscosity reduction, and further provided that when the zeolite is introduced into the combination the pH is between about 3 and 7; and forming the combination into particles.

• Assignee: Chevron Research Co., San Francisco, CA (USA)
• Patent Number(s): A; US 5001097
• Application Number: PPN: US 7-511822
• OSTI ID: 5117974
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANTIKNOCK RATINGS
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
FUELS
GASOLINE
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PRODUCTION
PYROLYSIS
SILICA
SILICATE MINERALS
SILICON COMPOUNDS
SILICON OXIDES
THERMOCHEMICAL PROCESSES
ZEOLITES