Abstract
The kinetics of the reduction of N2 to N2H4 and NH3 by TiIII-MoIII hydroxide was studied at pH I I and 303-333 K, and the activation energies for these reactions and also for the reaction N2H4 → 2 NH3 were determined (29, 70, and 25 kJ mol− respectively). It was concluded that -90 % of ammonia was formed by the direct reduction of N2 without intermediate formation of hydrazine. A mechanism of this reaction is suggested, which includes the proton insertion into the N-N bond favored by an enhanced electron density at the nitrogen atoms, according to the data of the quantum-mechanical calculation.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1402–1405, June, 1996.
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Denisov, N.T., Kobeleva, S.I. & Shestakov, A.F. Two-path reduction of molecular nitrogen by transition metal hydroxides. Russ Chem Bull 45, 1332–1335 (1996). https://doi.org/10.1007/BF01434207
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DOI: https://doi.org/10.1007/BF01434207