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
ApplicationNo. 154258 filed on 02/10/1988
US Classes:502/67Mixed zeolites
ExaminersPrimary: Dees, Carl F.
Attorney, Agent or Firm
Foreign Patent References
International ClassB01J 029/06
Foreign Application Priority Data1987-02-11 FR
AbstractThe 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