Soft chemistry resynthesis route to faujasitic and related FCC catalyst promoters (LAW529)
OwnerDavid E.W. Vaughan, Karl G. Strohmaierinventors
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Abstract
The present invention is a process for converting a hydrocarbon feedstream by a catalytic reaction in a catalytic cracking process comprising contacting said feedstream with a demetallated molecular sieve catalyst prepared by first synthesizing the molecular sieve in a metal aluminosilicate form, wherein the metal is Fe, Ga, Zn, B, Cr, Ni or Co and mixtures thereof, removal of the template, if present, by calcination, extracting the metal, with partial extraction of Al, cation exchange to reduce the residual base cation level to less than 1% wt; and catalyst fabrication by mixing the exchanged molecular sieve, optionally adding a secondary promoter, with a binder and forming.
Claims6
A process for converting a hydrocarbon feedstream by a catalytic reaction in a catalytic cracking process comprising contacting said feedstream with a demetallated molecular sieve catalyst prepared by
- a) first synthesizing the molecular sieve in a metal aluminosilicate form, wherein the metal is Fe, Ga, Zn, B, Cr, Ni or Co and mixtures thereof;
- b) removal of the template, if present, by calcination;
- c) extracting the metal, with partial extraction of Al;
- d) cation exchange to reduce the residual base cation level to less than 1% wt;
- e) catalyst fabrication by mixing said exchanged molecular sieve, optionally adding a secondary promoter, with a binder and forming.
Dependencies are inferred from the claim text.