Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs
Reexamination Certificate
2006-08-02
2009-11-24
Wood, Elizabeth D (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
C502S063000, C502S064000, C502S065000, C502S068000, C502S069000, C502S073000, C502S077000
Reexamination Certificate
active
07622413
ABSTRACT:
A multifunctional additive for maximizing yield of light olefins and LPG, with a tolerance to contaminant metals. Maximization of the referenced properties is accomplished through the use of a zeolite treated with a phosphorus source, calcined and impregnated with a rare earth salt. The process for preparation of the referenced catalyst includes the following steps: preparation of a precursor containing a zeolite that is selective of olefins with a source of phosphorus; placement of a source of phosphorus in this precursor through calcination; deposition of rare earth salts on the surface of the additive for maximizing the yield of light olefins and LPG that forms; and drying the multifunctional additive formed.
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Castro Mattos Eliane Bernad
Karam Joao Eduardo Cerutti
Lau Lam Yiu
Montaury Pimenta Ricardo Drolhe
Roncolatto Rodolfo Eugênio
Nixon & Vanderhye P.C.
Petroleo Brasileiro S.A. - Petrobras
Wood Elizabeth D
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