The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Aug. 02, 2006
Lam Yiu Lau, Rio de Janeiro, BR;
Eliane Bernad Castro Mattos, Rio de Janeiro, BR;
Joao Eduardo Cerutti Karam, Rio de Janeiro, BR;
Ricardo Drolhe Montaury Pimenta, Rio de Janeiro, BR;
Rodolfo Eugênio Roncolatto, Niteroi, BR;
Lam Yiu Lau, Rio de Janeiro, BR;
Eliane Bernad Castro Mattos, Rio de Janeiro, BR;
Joao Eduardo Cerutti Karam, Rio de Janeiro, BR;
Ricardo Drolhe Montaury Pimenta, Rio de Janeiro, BR;
Rodolfo Eugênio Roncolatto, Niteroi, BR;
Petroleo Brasileiro S.A. - Petrobras, Rio de Janeiro, BR;
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.