Process for the cracking of feedstocks containing high levels of nitrogen

摘要

Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock under cracking conditions with a cracking catalyst having a surface area of at least 150 m2/gm and comprising greater than about 25 weight percent of a Y zeolite dispersed in a matrix containing a synthetic silica-alumina component in which the weight ratio of silica-to-alumina is preferably equal to or greater than about 0.10.