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Formation of Hydroxylamine (NH2OH) in Electron-Irradiated Ammonia-Water Ices
Zheng, Weijun1,2,3; Kaiser, Ralf I.1
刊名JOURNAL OF PHYSICAL CHEMISTRY A
2010-04-29
DOI10.1021/jp911946m
114期:16页:5251-5255
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]CRYSTALLINE WATER ; INDUCED AMORPHIZATION ; TRAILING HEMISPHERES ; INFRARED SPECTRUM ; HYDROGEN-PEROXIDE ; ION IRRADIATION ; SOLAR-SYSTEM ; ICY SURFACES ; KUIPER-BELT ; ENCELADUS
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
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141946
专题中国科学院大连化学物理研究所
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
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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.
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