Catalysis over activated zeolites
AssigneeMobil Oil Corporation
InventorsJoseph N. Miale, Clarence D. Chang
Life of this patent
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Abstract
A process is provided for conducting organic compound conversion over a catalyst composition comprising a supported crystalline zeolite having a high initial silica-to-alumina mole ratio, said supported zeolite being prepared by compositing said crystalline zeolite with alumina, reacting the composite with a particular hydrogen fluoride solution in a specified way, drying the hydrogen fluoride reacted composite, treating the dried composite by hydrolysis, ammonolysis and/or by contact with an ammonium salt solution, and calcining the resulting material.
Claims21
A process for converting a feedstock comprising an alcohol, ether or mixture thereof to conversion products comprising hydrocarbons which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a supported crystalline zeolite, said zeolite having an initial silica-to-alumina mole ratio greater than about 100, prepared by a method which comprises compositing said crystalline zeolite with alumina, reacting the composite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0.degree. C. to about 30.degree. C. for a time of less than about 60 minutes, drying the hydrogen fluoride reacted composite, treating the dried hydrogen fluoride reacted composite by contact with an ammonium salt solution, by hydrolysis or ammonolysis, and calcining the resulting material at a temperature of from about 200.degree. C. to about 600.degree. C.
A process for converting a feedstock comprising an alcohol, ether or mixture thereof to conversion products comprising hydrocarbons which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising a supported crystalline zeolite, said zeolite having an initial silica-to-alumina mole ratio greater than 100 and the structure of zeolite ZSM-5, said catalyst composition being prepared by a method which comprises compositing said crystalline zeolite with alumina, reacting the composite with a dilute aqueous solution of hydrogen fluoride of from about 0.1 to about 5 Normal at a temperature of from about 0.degree. C. to about 30.degree. C. for a time of less than about 60 minutes, drying the hydrogen fluoride reacted composite, treating the dried hydrogen fluoride reacted composite by contact with an ammonium salt solution, by hydrolysis or ammonolysis, and calcining the resulting material at a temperature of from about 200.degree. C. to about 600.degree. C.
Dependencies are inferred from the claim text.