Akzo Nobel N.v.

Akzo N.v.

Willem Vreugdenhil

Fawzy G Sherif

Johst H Burk

James F Gadberry

Kelly B Triplett

Supported non-oxide metal carbide-containing catalysts are provided which comprise: (a) an oxide support, such as alumina or cordierite; (b) a passivating layer of a ceramic, such as silicon carbide; and (c) a non-oxide metal ceramic catalytic component, such as a Group VI metal carbide or nitride, preferably tungsten carbide or molybdenum carbide.

Non-oxide metal ceramic catalysts comprising metal oxide support and

Tungsten carbide/zeolite catalysts useful in the hydrogenation of unsaturated sulfur containing compounds and in particular in the production of tetrahydrothiophene are provided. Also provided is a process for the production of tetrahydrothiophene from thiophene using the tungsten carbide/zeolite catalysts taught, which effects the selective production of tetrahydrothiophene without producing large quantities of H.sub.2 S and unwanted hydrocarbons.

Sulfur-resistant hydrogenation catalyst and process for hydrogenation

Nitriles can be hydrogenated to amines by heating the nitrile in the presence of hydrogen and a tungsten carbide catalyst, such as are formed by the calcination of a tungsten salt with an acyclic compound containing-nitrogen-hydrogen bonding.

Growing community of inventors

Katonah, NY, United States of America

Willem Vreugdenhil