Cracking catalyst for hydrocarbon charges comprising an offretite, a zeolite and a matrix
Patent 4992400 Issued on February 12, 1991. Estimated Expiration Date: 
February 12, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 12, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3758402 3769202 3804747 3864283 Hydrocarbon cracking catalyst and process utilizing the same Acid dealuminated Y-zeolite and cracking process employing the same Binary zeolitic systems, their synthesis and their utilization Patent #: 4847224 InventorsApplicationNo. 154258 filed on 02/10/1988US Classes:502/67Mixed zeolitesExaminersPrimary: Dees, Carl F.Attorney, Agent or FirmForeign Patent References
International ClassB01J 029/06Foreign Application Priority Data1987-02-11 FRAbstractThe cracking catalyst of the invention contains:(a) 20-95% by weight of at least one matrix, selected from the group consisting of alumina, silica, magnesia, clay, titanium oxide, zirconia, combinations of at least two of these compounds and alumina-boron oxide combinations,(b) 1-60% by weight of at least one zeolite of open structure whose main dodecagonal channels have openings of at least 7 Angstroms, said zeolite of open structure being selected from the group formed of X, Y, L, omega and beta zeolites,(c) 0.5-60% by weight of at least one offretite whose main dodecagonal channels have openings smaller than 7 Angstroms and which have a SiO2 /Al2 O3 molar ratio from about 15 to about 500, the crystalline parameters a and c of elementary mesh ranging respectively from 1.285 to 1.315 nm for a and from 0.748 to 0.757 nm for c and have a potassium content lower than 1.5% by weight.Field of SearchMixed zeolites |
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