Monsanto Company

David E Gross

Norman A Fishel

Arnold Hershman

Robert M Friedman

Processes are described wherein formaldehyde or formic acid and similar materials are oxidized to produce carbon dioxide and water by contact with oxygen in the presence of a noble metal catalyst on a carbon support that is protected from poisonous amines by a polymer coating.

Oxidation with coated catalyst

A method for preparing thiophenolic compounds is described comprising reacting a phenol and hydrogen sulfide in the presence of a vanadia catalyst. It is preferred to carry out the process of this invention at low pressures, i.e. at pressures lower than 100 psi, atmospheric pressure being very suitable, although the process is operable at subatmospheric pressures. Preferred phenols, catalysts and reaction conditions are also described.

Production of thiophenols

A process for production of orthophenylphenol is disclosed. More specifically, the invention relates to the conversion of phenol or diphenyl ether into orthophenylphenol in a two-stage process in which dibenzofuran is an intermediate.

Process for production of orthophenylphenol

A method for preparation of heterocyclic fused ring compounds by dehydration and dehydrogenation of certain phenolic compounds in the presence of water vapor and in the presence of a cerium oxide catalyst is disclosed. Preferred phenolic compounds, catalytic materials, and reaction conditions also are described.

Ceria catalyzed conversion of phenols to dibenzofurans in the presence

The present invention relates to a process for the preparation of orthophenylphenol and derivatives thereof, specifically by the reaction of dibenzofuran and its derivatives with hydrogen, at elevated temperatures, in the presence of a catalyst comprised of one or more Group VIII elements dispersed on a porous magnesia support.

Production of orthophenylphenols

The present invention relates to a process for the preparation of orthophenylphenol and derivatives thereof, specifically by the reaction of dibenzofuran and its derivatives with hydrogen, at elevated temperatures, in the presence of a catalyst comprised of one or more Group VIII elements.

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St. Charles, MO, United States of America

David E Gross