Catalytic dewaxing

Claim 2

The process of claim 1 wherein said carrier is alumina.

Claim 3

The process of claim 1 wherein said combined fluorine is present in an amount less than 1 weight percent.

Claim 4

A process for the conversion of waxy hydrocarbons which comprises contacting a feed containing said hydrocarbons at a temperature of from 700* to 950* F., a pressure of from 500 to 2, 500 p.s.i.g., a liquid hourly space velocity of from 0.1 to 10 and in the presence of 500 to 20,000 SCF hydrogen/bbl. of feed, with a catalyst consisting essentially of a porous inorganic oxide carrier in association with from 1 to 18 weight percent molybdenum and 0.2 to 1.0 weight percent combined fluorine, calculated as fluorine.

Claim 5

A process for the conversion of a waxy hydrocarbon oil feed containing naphthenic hydrocarbons which comprises contacting said feed at dewaxing condition and in the presence of hydrogen with a catalyst consisting essentially of 1 to 18 weight percent molybdenum and 0.2 to 1.0 weight percent combined fluorine to substantially lower the freeze point, then contacting said low-freeze point product at dehydrogenation conditions and in the presence of hydrogen with a catalyst having substantially no cracking activity comprising 0.01 to 3.0 weight percent platinum and 0.1 to 10 weight percent alkali metal or alkaline earth metal, as such or in the form of a compound, in association with a porous inorganic oxide carrier to substantially dehydrogenate said naphthenic hydrocarbons.

Claim 6

The process of claim 6 wherein the temperature in said dehydrogenation zone is between 25* to 200* higher than the temperature maintained in said dewaxing zone.