Kinetics and Mechanism of the Ammonia Synthesis

Details Kinetics and Mechanism of the Ammonia Synthesis Kinetics and Mechanism of the Ammonia Synthesis

Oct 1960

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1960rspsa.258...47o&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 258, Issue 1292, pp. 47-62

Physics

4

Scientific paper

The reaction rate in stoichiometric mixtures of nitrogen and hydrogen or deuterium has been measured on two different doubly promoted iron catalysts, between 218 and 302 ^circC, 1/3 and 1 atm and over a 300-fold range of efficiencies. The kinetic data as well as the isotope effect indicate that the rate-determining step is the chemisorption of nitrogen on a surface mainly covered with NH radicals. The presence on the surface of NH radicals instead of nitrogen atoms opens new perspectives on the kinetics and mechanism of ammonia synthesis.

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