中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Formation of Hydroxylamine (NH2OH) in Electron-Irradiated Ammonia-Water Ices

文献类型:期刊论文

作者Zheng, Weijun1,2,3; Kaiser, Ralf I.1
刊名JOURNAL OF PHYSICAL CHEMISTRY A
出版日期2010-04-29
卷号114期号:16页码:5251-5255
ISSN号1089-5639
DOI10.1021/jp911946m
英文摘要We investigated chemical and physical processes in electron-irradiated ammonia-water ices at temperatures of 10 and 50 K. Chemically speaking, the formation of hydroxylamine (NH2OH) was observed in electron-irradiated ammonia-water ices. The synthesis of molecular hydrogen (H-2), molecular nitrogen (N-2), molecular oxygen (O-2), hydrazine (N2H4), and hydrogen peroxide (H2O2), which was also monitored in previous irradiation of pure ammonia and water ices, was also evident. These newly formed species were trapped inside of the ices and were released into the gas phase during the warm-up phase of the sample after the irradiation. A quantitative analysis of the data showed that the production rates of the newly formed species at 10 K are higher compared to those at 50 K. Our studies also suggest that hydroxylamine is likely formed by the recombination of amino (NH2) with hydroxyl (OH) radicals inside of the ices. Considering the physical effects on the ice sampled during the irradiation, the experiments provided compelling evidence that the crystalline ammonia-water ice samples can be partially converted to amorphous ices during the electron irradiation; similar to the chemical processes, the irradiation-induced amorphization of the ices is faster at 10 K than that at 50 K a finding which is similar to electron-irradiated crystalline water ices under identical conditions. However, the amorphization of water in water-ammonia ices was found to be faster than that in pure water ices at identical temperatures.
语种英语
WOS记录号WOS:000276888800003
出版者AMER CHEMICAL SOC
源URL[http://ir.iccas.ac.cn/handle/121111/70247]  
专题中国科学院化学研究所
通讯作者Kaiser, Ralf I.
作者单位1.Univ Hawaii, Dept Chem, Honolulu, HI 96822 USA
2.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
3.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Zheng, Weijun,Kaiser, Ralf I.. Formation of Hydroxylamine (NH2OH) in Electron-Irradiated Ammonia-Water Ices[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2010,114(16):5251-5255.
APA Zheng, Weijun,&Kaiser, Ralf I..(2010).Formation of Hydroxylamine (NH2OH) in Electron-Irradiated Ammonia-Water Ices.JOURNAL OF PHYSICAL CHEMISTRY A,114(16),5251-5255.
MLA Zheng, Weijun,et al."Formation of Hydroxylamine (NH2OH) in Electron-Irradiated Ammonia-Water Ices".JOURNAL OF PHYSICAL CHEMISTRY A 114.16(2010):5251-5255.

入库方式: OAI收割

来源:化学研究所

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