Celanese Gmbh

Anthony B Baylis

William E Slinkard

Michael P Hughes

Peter B DeGroot

The present invention provides a supported catalyst for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as butane to corresponding monocarboxylic acids such as acetic acid. The catalyst is prepared by the carbon monoxide reduction of a vanadium pentoxide-impregnated, inert porous carrier.

Hydrocarbon oxidation via carbon monoxide reduced catalyst

A butene may be oxidized in the vapor phase at elevated temperatures to produce acetic acid by reacting the butene with molecular oxygen in the presence of a catalyst comprising a composition of the empirical formula:

Catalyst for the oxidation of butene

Oxidation of butene to acetic acid

The present invention provides an unsupported catalyst with superior crush strength for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids used as acetic acid. The catalyst is prepared by the reduction of a vanadium oxide containing chromium catalyst.

Oxidation of aliphatic hydrocarbons with high strength hydrocarbon

The present invention provides a highly efficient process for use in the high pressure catalytic vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids such as acetic acid. The oxidation reaction takes place under hydrocarbon rich conditions. The increased efficiency in this process is realized by the judicious use of steam and the catalyst systems set forth in the instant invention.

Steam assisted hydrocarbon oxidation process

The present invention provides a vapor phase process for high yield conversion of C.sub.4 -hydrocarbons to maleic acid and acetic acid with a heteropolymolybdic acid catalyst.

Hydrocarbon oxidation process

An improvement in the process wherein carbon monoxide and hydrogen are reacted in the liquid phase in the presence of a cobalt carbonyl catalyst whereby increased amounts of ethanol may be produced, which improvement comprises conducting the reaction in the presence of a non-polar, substantially inert, oxygenated hydrocarbon solvent.

Production of ethanol from methanol

A vapor phase process is provided for high conversion of C.sub.4 -hydrocarbons to acetic acid in the presence of a catalyst comprising a calcined coprecipitate of a molybdenum compound and one or more compounds of metal elements selected from titanium, zirconium, tin, hafnium, niobium and tantalum.

A vapor phase process is provided for high yield conversion of C.sub.4 -hydrocarbons to maleic acid (anhydride) and acetic acid in the presence of a catalyst comprising a reduced calcined coprecipitate of a molybdenum compound and a phosphorus compound, and optionally the catalyst includes one or more compounds of metal elements selected from titanium, vanadium, niobium and bismuth.

Vapor phase oxidation of butane producing maleic anhydride and acetic

Pyridine is prepared by reacting acetaldehyde, ammonia and oxygen at elevated temperatures and in the presence of a condensation catalyst, the oxygen (or air) oxidatively demethylating, in situ, the picolines and/or higher condensation products produced along with pyridine. A second embodiment includes incorporating methanol in the above reaction mixture. A third embodiment includes incorporating isobutyraldehyde in the above reaction mixture. These processes obviate the need for formaldehyde as a reactant.

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Berkeley Heights, NJ, United States of America

Anthony B Baylis