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Study on mechanism for oxidation of N,N-dimethylhydroxylamine by nitrous acid

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Abstract

The oxidation of N,N-dimethylhydroxylamine (DMHAN) by nitrous acid is investigated in perchloric acid and nitric acid medium, respectively. The effects of H+, DMHAN, ionic strength and temperature on the reaction are studied. The rate equation in perchloric acid medium has been determined to be −d[HNO2]/dt = k[DMHAN][HNO2], where k = 12.8 ± 1.0 (mol/L)−1 min−1 when the temperature is 18.5 °C and the ionic strength is 0.73 mol/L with an activation energy about 41.5 kJ mol−1. The reaction becomes complicated when it is performed in nitric acid medium. When the molarity of HNO3 is higher than 1.0 mol/L, nitrous acid will be produced via the reaction between nitric acid and DMHAN. The reaction products are analyzed and the reaction mechanism is discussed in this paper.

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Authors and Affiliations

  1. China Institute of Atomic Energy, P.O. Box 275-26, Beijing, 102413, China

    Li Gaoliang & He Hui

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  1. Li Gaoliang
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  2. He Hui
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Correspondence to He Hui.

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Gaoliang, L., Hui, H. Study on mechanism for oxidation of N,N-dimethylhydroxylamine by nitrous acid. J Radioanal Nucl Chem 287, 673–678 (2011). https://doi.org/10.1007/s10967-010-0912-y

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  • DOI: https://doi.org/10.1007/s10967-010-0912-y

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