Process for preparing amorphous, catalytically active...

Details Process for preparing amorphous, catalytically active... Process for preparing amorphous, catalytically active...

B - Operations, Transporting

01

J

B01J 21/12 (2006.01) B01J 35/10 (2006.01) B01J 37/03 (2006.01) C07C 2/10 (2006.01) C07C 5/22 (2006.01) C07C 11/02 (2006.01)

Patent

CA 2137991

An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m2/g and with a molar ratio of SiO2:Al2O3 of at least 30:1, is prepared by hydrolysing and causing a tetra-alkyl ammonium hydroxide, an aluminum trialkoxide, and a tetra-alkyl orthosilicate to gelate, by operating at a temperature equal to, or higher than, the boiling temperature, under atmospheric pressure, of any alcohols which are developed as a by-product from said hydrolysis reaction, without said alcohols being removed, or being substantially removed, from the reaction media; and the so produced gel being dried and fired. So obtained gel is an active catalyst ,in hydrocarbon conversion reactions, in particular in light olefin isomerization and oligomerization processes, e.g., in propylene oligomerization processes to yield useful liquid hydrocarbons for gasoline and jet fuel formulation.

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