Octane improvement with large size ZSM-5 catalytic cracking

Patent · Tue May 09 04:00:00 EDT 1989

OSTI ID:5965474

Kuchl, G H; Stover, W A

This patent describes a process for catalytic cracking of a petroleum fraction in the presence of a conventional cracking catalyst, under cracking conditions and wherein the catalyst is contacted with steam, the improvement comprising adding to the catalyst an additive catalyst comprising zeolite characterized by a Constraint Index of from about 1 to about 12 and a silica/alumina mole ratio greater than about 12 in an amount which provides the zeolite component of the additive catalyst at from about 0.1 wt. percent to about 50 wt. percent of the conventional cracking catalyst, the additive catalyst zeolite having a crystal size of from 0.2 micron to 10 microns.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4828679
• OSTI ID: 5965474
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
ANTIKNOCK RATINGS
AUTOMOTIVE FUELS
CATALYSTS
CATALYTIC CRACKING
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
PETROLEUM
PETROLEUM FRACTIONS
PYROLYSIS
SYNTHESIS
THERMOCHEMICAL PROCESSES
ZEOLITES