Radiolysis of ammonia in nitrogen; Effects of nitrogen monoxide and oxygen on decomposition of ammonia

Okihiro Tokunaga, Tsutomu Sekine, Masanobu Sakanoue, Nobutake Suzuki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effects of NO and O2 on the decomposition of NH3 were studied at low concentrations (300-900 ppm) in N2 under irradiation by electron beams of 1.5 MeV energy at 120°C. The NH3 was decomposed to H2 and N2 in N2, with a G-value of 1.3. In the presence of NO(800 ppm) or O2 (5%), the NH3 decomposition was much enhanced (G-values were 3.1 and 3.0, respectively), the H2 formation was suppressed, and N2O formation was observed with a high yield. The enhancement of the NH3 decomposition in the presence of NO or O2 is attributed to the reactions of H and NH2 radicals with NO or O2, leading to the formations of N2O, N2, H2O, etc. In the presence of NO, the reaction of NO+ with NH3 and that of NH3+ with NO may also be important for the NH3 decomposition.

Original languageEnglish
Pages (from-to)567-572
Number of pages6
JournalThe International Journal Of Applied Radiation And Isotopes
Volume32
Issue number8
DOIs
Publication statusPublished - 1981 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging

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