E.i. Dupont De Nemours and Company

Stanislaw Bogdan Ziemecki

Alex Sergey Ionkin

Theodore Augur Koch

William W Prichard

Mark Jay Harper

Melinda A Mabry

V N Rao

Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and a cyanide compound.

Aminonitrile production

A process for selectively hydrogenating a dinitrile to an aminonitrile is provided. The process comprises contacting a dinitrile with a hydrogen-containing fluid in the presence of a solvent and a metal catalyst in which the solvent comprises liquid ammonia, an alcohol, ammonium hydroxide, or combinations thereof and the metal catalyst comprises nickel and iron and can be supported on an inorganic support such as, for example, magnesium oxide.

A process for selectively hydrogenating a dinitrile to an aminonitrile is provided. The process comprises contacting a dinitrile with a hydrogen-containing fluid in the presence of a solvent comprising an alcohol or liquid ammonia, at least one metal catalyst, and a carbonyl group-containing additive such as, for example, organic amides, organic esters, salts of carboxylic acids or urea.

Selective hydrogenation of aliphatic dinitriles to aminonitriles is achieved under low pressure with high yield preferably using a Raney nickel or Raney colbalt-containing catalyst.

Selective low pressure hydrogenation of a dinitrile to an aminonitrile

Palladium/rhenium-on-carbon catalyst; a method employing said catalyst to produce tetrahydrofuran, 1,4-butanediol or mixtures thereof in selectable ratios from a number of starting reactants; and a method for making the Pd/Re/C catalyst.

Pd/Re hydrogenation catalyst for making tetrahydrofuran and

Process for making tetrahydrofuran and 1,4-butanediol using Pd/Re

Formaldehyde is synthesized by continuously passing a gaseous mixture of methanol and nitrous oxide over a metallic silver-containing catalyst bed at a temperature of about 475 to about 675.degree. C.

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Wilmington, DE, United States of America

Stanislaw Bogdan Ziemecki