Cracking with molecular sieves containing aluminium, phosphorus and silicon.

摘要

There is provided a process for cracking gas oils and heavier hydrocarbons with molecular sieve catalysts which contain aluminum, phosphorus and silicon, preferably having a faujasite-type crystalline structure. Such molecular sieves may be prepared by the method for making SAPO-37 as described in the Lok et al U.S. Patent No. 4,440,871. These molecular sieves may be used alone or as additives to other catalysts for octane improvement in the cracking of gas oils to produce a product stream including gasoline.