Halcon International, Inc.

The Halcon Sd Group, Inc.

Halcon Research and Development Corp.

Anthony N Naglieri

Nabil M Rizkalla

A carboxylic acid, such as acetic acid, is prepared from a hydrocarbyl alcohol, such as methanol, in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel catalyst in the presence of a promoter comprising an organo-phosphorus compound wherein the phosphorus is trivalent.

Preparation of carboxylic acids

The novel bis (2-bromoethyl) tellurium dibromide and 2-bromoethyl tellurium tribromide are prepared by reacting ethylene with a source of tellurium tetrabromide in an inert, non-basic organic solvent under certain temperature conditions and in the substantial absence of molecular oxygen.

Novel 2-bromoethyl tellurium bromides

A carboxylic acid, such as acetic acid, is prepared from a hydrocarbyl alcohol, such as methanol, in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel catalyst in the presence of a tin promoter.

Process for preparing carboxylic acids

A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with an organic hydroperoxide in the presence of a Group VIII noble metal catalyst in a liquid medium and in the presence of a promoter comprising a member selected from the group consisting of alkali metal compounds and heterocyclic tertiary amines, to oxidize the thallium (I) compound to a thallium (III) compound.

Process for converting thallium (I) to thallium (III)

A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with molecular oxygen in the presence of a Group VIII noble metal catalyst and in the presence of a promoter comprising a heterocyclic tertiary amine to oxidize the thallium (I) compound to a thallium (III) compound.

Conversion of thallium (I) to thallium (III)

A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel-chromium catalyst in the presence of a promoter comprising an organo-nitrogen compound or an organo-phosphorus compound wherein the nitrogen and phosphorus are trivalent.

Preparation of carboxylic acid anhydrides

A carboxylic acid anhydride such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel-chromium catalyst in the presence of a tin promoter.

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Pine Brook, NJ, United States of America

Anthony N Naglieri