Quantum-tunneling surface hydrogenation of solid benzene at low temperature
| Project/Area Number |
26410001
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
Hama Tetsuya 北海道大学, 低温科学研究所, 助教 (20579172)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 水素化 / 重水素化 / 芳香族炭化水素 / 反応制御 / 速度論的同位体効果 / 同位体分別 / 表面化学反応 / 量子トンネル効果 / アモルファス / 結晶 / ベンゼン / 星間化学 |
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| Outline of Final Research Achievements |
Aromatic hydrocarbon is one of the main component of interstellar dust. The hydrogenation and deuteration of interstellar aromatic hydrocarbons is of particular interest for the formation of aliphatic hydrocarbons and their deuterated isotopologues.
In the present study, the hydrogenation/deuteration reactions of amorphous solid benzene (C6H6) was investigated at low temperatures of 10-50 K. Cyclohexane or deuterated cyclohexane are efficiently formed by H or D atom addition via quantum tunneling. In addition, we found that the isotopically insensitive surface processes (adsorption and diffusion) of the atoms physisorbed on solid C6H6 masked the tunneling kinetic isotope effect.
The present results implicate that interstellar aromatic hydrocarbons can be hydrogenated or deuterated by the tunneling of H or D atoms at low temperatures, and that the tunneling kinetic isotope effect would not strongly inhibit the deuteration of interstellar aromatic hydrocarbons.
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Report
(3 results)
Research Products
(44 results)
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[Presentation] Evolution of organic molecules in space: characteristics and properties of experimental organic residues2015
Author(s)
L. Piani, S. Tachibana T. Hama, Y. Kimura, Y. Endo, K. Fujita, S. Nakatsubo, H. Fukushi, S. Mori, T. Chigai, H. Yurimoto, and A. Kouchi
Organizer
日本地球惑星科学連合2015年大会
Place of Presentation
幕張メッセ 国際会議場 （千葉県千葉市）
Year and Date
2015-05-24
Related Report
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[Presentation] Deposition of Amorphous Silicate Films for Experiments on Surface Reaction in Molecular Clouds and Protoplanetary Disks2015
Author(s)
A. Tsuchiyama, A. Miyake, T. Hama, S. Tachibana, H. Terasaki, T. Kondo, Y. Adachi, H. Hidaka, N. Watanabe, Y. Kimura, and A. Kouchi
Organizer
46th Lunar and Planetary Science Conference
Place of Presentation
The Woodlands Waterway Marriott and Convention Center, Texas, USA
Year and Date
2015-03-16 – 2015-03-20
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[Presentation] 模擬氷星間塵への真空紫外光照射による有機分子生成実験 Experimental approach to the formation of organic molecules following vacuum-ultraviolet irradiation of interstellar ice2014
Author(s)
羽馬 哲也, 橘 省吾, ローレット ピアニ, 遠藤 由希子, 藤田 和之, 中坪 俊一, 福士 博樹, 森 章一, 千貝 健, 香内 晃
Organizer
日本地球惑星科学連合2014年大会
Place of Presentation
パシフィコ横浜, 横浜市
Year and Date
2014-04-28 – 2014-05-02
Related Report
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