Intevep, S.a.

Universidad Simon Bolivar

Inteven, S.a.

Nieves Alvarez

Juan A Lujano

Nelson P Martinez

Carmen M Lopez

Francisco Machado

William D McEwen

Nelson Martinez

Jacek Lubinkowski

An antimony and tin containing compound for passivating contaminant metals to which a catalyst is exposed during fluid catalytic cracking of hydrocarbons containing said contaminant metals, said compound having a composition as follows (R*).sub.x Sb(OSn(R**).sub.3).sub.n wherein R* and R** are aryl compounds having between 6 to 13 carbon atoms, wherein n=1, 2 or 3 and x=4 when n=1, x=3 when n=2, and x=0 when n=3.

Antimony and tin containing compound, use of such a compound as a

A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.

Method for recharging a spend fluid catalytic cracking process catalyst

Zeolitic catalyst of MFI type, its preparation and use

Growing community of inventors

Caracas, Venezuela

Nieves Alvarez