초록 ▼

Octane and total yield improvement in catalytic cracking of petroleum fractions under cracking conditions can be obtained by adding to conventional cracking catalysts small amounts of an additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than 12

Octane and total yield improvement in catalytic cracking of petroleum fractions under cracking conditions can be obtained by adding to conventional cracking catalysts small amounts of an additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than 12 and a constraint index of 1 to 12 wherein the zeolite additive catalyst has a crystal size of between 0.2 to 10 microns.

대표청구항 ▼

In 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 said catalyst an additive catalyst comprising zeolite characterized by a C

In 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 said 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 said additive catalyst at from about 0.1 wt. percent to about 50 wt. percent of said conventional cracking catalyst, said additive catalyst zeolite having a crystal size of from 0.2 micron to 10 microns.