Selective dewaxing of hydrocarbon oil using surface modified...

C - Chemistry – Metallurgy – 10 – G

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C10G 47/18 (2006.01) B01J 29/06 (2006.01) B01J 29/12 (2006.01) C10G 45/64 (2006.01)

Patent

CA 1207697

ABSTRACT OF THE DISCLOSURE A method for selectively dewaxing a waxy hydro- carbon oil feedstock comprising contacting said waxy hydrocarbon oil stock in the presence of hydrogen with a zeolite (1) which has been chemically modified by reaction, under dry, anhydrous conditions, with an organosilane wherein the zeolite has some reactive sites capable of reacting with the organosilane and where said organosilane is: (a) capable of entering into the channels of the zeolite and chemically reacting with the reactive sites present therein, as well as (b) reacting with hydroxyl groups present on the external surface of said zeolite, and (2) which has been loaded with a catalytically active hydrogenating metal component; which contacting is con- ducted under conditions of pressure, temperature and liquid flow velocities sufficient to effect the hydro- dewaxing. Preferably the organosilane modified zeolite, either before or after the deposition of the catalytic metal component may be heated to an elevated temperature in an inert or reducing atmosphere.

415767

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