Title: Process for preparing catalytic cracking catalysts
Application Number: 85108056 Application Date: 1985.10.02
Publication Number: 1002616 Publication Date: 1986.08.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B01J29/06;B01J29/08;C10G11/05
Applicant(s) Name: Union Carbide Corp. Address:
Inventor(s) Name: Robert Ling Chiang
Attorney & Agent: LU XINHUA
Abstract:
    Catalytic cracking processes wherein the cracking catalysts are prepared by: (1) contacting a mixture of a large pore zeolite and an inorganic oxide matrix at effective conditions of temperature, pH and time with a fluoro salt; and (2) ammonium exchanging the product of step (1) to provide a catalyst having less than 0.3 percent by weight Na2O, based on total catalyst weight, or less than 2.0 percent by weight of the zeolite employed in the catalyst. Optionally, the zeolite used is provided with an effective amount of at least one cation selected from the class consisting of cerium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, lutetium, gadolinium, terbium dysprosium, holmium, erbium, thulium and ytterbium.
Time: 3
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