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

Okihiro Tokunaga; Tsutomu Sekine; Masanobu Sakanoue; Nobutake Suzuki

doi:10.1016/0020-708X(81)90035-1

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 journal › Article › peer-review

5 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 language	English
Pages (from-to)	567-572
Number of pages	6
Journal	The International Journal Of Applied Radiation And Isotopes
Volume	32
Issue number	8
DOIs	https://doi.org/10.1016/0020-708X(81)90035-1
Publication status	Published - 1981 Aug
Externally published	Yes

ASJC Scopus subject areas

Radiation
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging

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10.1016/0020-708X(81)90035-1

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title = "Radiolysis of ammonia in nitrogen; Effects of nitrogen monoxide and oxygen on decomposition of ammonia",

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.",

author = "Okihiro Tokunaga and Tsutomu Sekine and Masanobu Sakanoue and Nobutake Suzuki",

year = "1981",

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T1 - Radiolysis of ammonia in nitrogen; Effects of nitrogen monoxide and oxygen on decomposition of ammonia

AU - Tokunaga, Okihiro

AU - Sekine, Tsutomu

AU - Sakanoue, Masanobu

AU - Suzuki, Nobutake

PY - 1981/8

Y1 - 1981/8

N2 - 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.

AB - 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.

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ER -

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

Abstract

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