Davy Process Technology Limited

Davy Process Technololgy Limited

Derek Vincent Tyers

Simon Peter Crabtree

Michael A Wood

Melvyn Kilner

Mohammed Sharif

Michael Anthony Wood

A homogenous process for the hydrogenation of the carboxylic acids and/or derivatives thereof in the presence of a catalyst comprising ruthenium, rhodium, iron, osmium or palladium, and an organic phosphine is described in which the hydrogenation is carried out in the presence of at least about 1% by weight water. A process for regenerating a catalyst comprising ruthenium, rhodium, iron, osmium or palladium and an organic phosphine is also described in which the regeneration is carried out in the presence of hydrogen and water.

Homogeneous process for the hydrogenation of carboxylic acids and derivatives thereof

Homogenous process for the hydrogenation of carboxylic acids and derivatives thereof

A homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides in the presence of a catalyst comprising: (a) ruthenium, rhodium, iron, osmium or palladium; and (b) an organic phosphine; wherein the hydrogenation is carried out in the presence of at least about 1% by weight water and wherein the reaction is carried out at a pressure of from about 500 psig to about 2000 psig and a temperature of from about 200&#xb0; C. to about 300&#xb0; C. such that from about 1 mol to about 10 mol of hydrogen are used to strip 1 mole of product from the reactor.

Homogeneous process for the hydrogenation of dicarboxylic acids and/or anhydrides thereof

A homogeneous process for the hydrogenation of dicarboxylic acid and/or derivative thereof with an amine in the presence of a catalyst comprising: (a) ruthenium or osmium; and (b) an organic phosphine; and wherein the hydrogenation is carried out in the presence of water.

Process for the production of lactams

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Thornaby, United Kingdom

Derek Vincent Tyers