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.

Abstract: “FCC equilibrium catalysts, even when highly contaminated with vanadium, can be upgraded to make them suitable again for use in catalytic processes, for instance, as catalyst additives in FCC, by employing a process comprising the steps of (a) treating an FCC equilibrium catalyst that contains alumina and zeolite with an acidic solution to obtain an acid-treated equilibrium catalyst, and (b) contacting the acid-treated equilibrium catalyst with an aqueous solution or suspension of a divalent metal compound.

Abstract: The present invention relates to a cracking catalyst composition comprising a physical mixture of 10-90 weight % of a cracking catalyst A and 90-10 weight % of a cracking catalyst B, whereby catalyst A is a zeolite-containing cracking catalyst, and catalyst B is a catalyst having a higher average pore volume in the pore diameter range of 20-200 Å than catalyst A in the same pore diameter range and not containing M41S material. These compositions can suitably used for the fluid catalytic cracking of hydrocarbon feeds with high metal concentrations.

Abstract: A process for preparing molecular sieves of type Y faujasite structure is described, as well as pre-shaped bodies of faujasite structure type Y molecular sieves. The process comprises preparing a precursor gel from a source of silica-alumina or a source of alumina and a source of silica with a template agent at a SiO2/Al2O3 greater than 7 and suitable for forming a type Y zeolite, drying the precursor gel and contacting the dried precursor gel with steam, optionally followed by caustic washing, without the formation of crystalline phases other than type Y zeolite being observed. Advantageously, the pre-shaped bodies prepared with the precursor gel of Y zeolite, when subjected to the process of the invention, will have their outer surface covered by type Y zeolite crystals. The molecular sieves so obtained may be employed as catalysts or adsorbents in various processes of the chemical or oil industry.

Abstract: A process for preparing molecular sieves of type Y faujasite structure is described, as well as pre-shaped bodies of faujasite structure type Y molecular sieves. The process comprises preparing a precursor gel from a source of silica-alumina or a source of alumina and a source of silica with a template agent at a SiO2/Al2O3 greater than 7 and suitable for forming a type Y zeolite, drying the precursor gel and contacting the dried precursor gel with steam, optionally followed by caustic washing, without the formation of crystalline phases other than type Y zeolite being observed. Advantageously, the pre-shaped bodies prepared with the precursor gel of Y zeolite, when subjected to the process of the invention, will have their outer surface covered by type Y zeolite crystals. The molecular sieves so obtained may be employed as catalysts or adsorbents in various processes of the chemical or oil industry.

Abstract: The present invention relates to a cracking catalyst composition comprising a physical mixture of 10-90 weight % of a cracking catalyst A and 90-10 weight % of a cracking catalyst B, whereby catalyst A is a zeolite-containing cracking catalyst, and catalyst B is a catalyst having a higher average pore volume in the pore diameter range of 20-200 Å than catalyst A in the same pore diameter range and not containing M41S material. These compositions can suitably used for the fluid catalytic cracking of hydrocarbon feeds with high metal concentrations.