CATALYTIC CRACKING CATALYST COMPOSITIONS HAVING IMPROVED BOTTOMS CONVERSION

摘要

A particulate catalytic cracking catalyst which comprises a zeolite havin g catalytic cracking ability under catalytic cracking conditions, added sili ca, precipitated alumina and, optionally clay. The catalytic cracking cataly st has a high matrix surface area and is useful in a catalytic cracking proc ess, in particularly, a fluid catalytic cracking process, to improve bottoms conversion at a constant coke formation.