Catalytic process for the production of urea and ammonium cyanate
AssigneeAT&T Bell Laboratories
InventorRudolf J. H. Voorhoeve
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Abstract
A catalytic process has been found to produce urea or its equivalent, NH.sub.4 NCO, under relatively mild pressure and temperature conditions. This process entails flowing a gas mixture containing NO.sub.x, CO, and a source of hydrogen such as H.sub.2 or H.sub.2 C over a hydrogenation catalyst such as platinum. Yields of urea above 90 percent based on NO.sub.x conversion are obtainable.
Claims6
The process comprising converting a mixture of gases, said mixture of gases comprising (1) an oxide of the composition NO.sub.x where x is 1 or 2, (2) carbon monoxide and (3) a source of hydrogen, to a compound of the formula N.sub.2 H.sub.4 CO in the presence of a hydrogenation catalyst and collecting said compound.
Dependencies are inferred from the claim text.