CATALYST PREPARATION METHOD AND A METHOD FOR ISOMERIZATION OF N-PARAFFINS USING THIS CATALYSTS Russian patent published in 2005 - IPC

FIELD: petrochemical processes catalysts.

SUBSTANCE: catalyst based on crystalline element-alumino-phosphates and having structure A1PO-31 (SATO) is prepared by providing first reaction mixture containing aluminum source, phosphoric acid, and one or more sources of substituting element as well as organic structure-forming compound followed by crystallization of above mixture under hydrothermal conditions required to form crystals with structure A1PO-31 and isolation of solid crystallization product, to which further modifying group VIII metal is added. Structure-forming compound mentioned above is selected from di-n-pentylamine and mixture thereof with other di-n-alkylamines and substituting element is selected from magnesium, zinc, silicon, cobalt, manganese, nickel, and cadmium. Method of isomerization of n-paraffins at elevated temperature and hydrogen pressure in presence of above-described catalyst is also disclosed.

EFFECT: increased activity and selectivity of catalyst.

4 cl, 1 dwg, 3 tbl, 17 ex