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Science 19 May 1978:
Vol. 200. no. 4343, pp. 759 - 761
DOI: 10.1126/science.200.4343.759
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Articles

Synthesis of Ammonium Cyanate and Urea by Reduction of Nitric Oxide on Platinum, Rhodium, and Ruthenium Catalysts

R. J. H. VOORHOEVE 1, L. E. TRIMBLE 1, and D. J. FREED 1

1 Bell Laboratories, Murray Hill, New Jersey 07974

Nearly quantitative conversion of nitric oxide (NO) into N2H4CO has been obtained in the reduction of NO with carbon monoxide and hydrogen over platinum and rhodium catalysts. Depending on the temperature of collection, N2H4CO is isolated as ammonium cyanate or its isomer, urea. The process is an effective way of recovering fixed nitrogen from dilute industrial streams containing NO. Ammonium cyanate may play a role in the reduction of NO in automotive exhaust control.

Submitted on October 25, 1977
Revised on February 15, 1978


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Synthesis of Isocyanic Acid from Nitric Oxide over Palladium and Iridium Catalysts.
R. J. H. VOORHOEVE and L. E. TRIMBLE (1978)
Science 202, 525-526
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Science. ISSN 0036-8075 (print), 1095-9203 (online)