The Generation and Reactivity of Hydrocarbon Radicals on Solid Surfaces
| Project/Area Number |
63470003
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
物理化学一般
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
ONISHI Takaharu Tokyo Institute of Technology, Research Laboratory of Resources Utilization, Professor, 資源化学研究所, 教授 (70011492)
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| Co-Investigator(Kenkyū-buntansha) |
DOMEN Kazunari Tokyo Institute of Technology, Research Laboratory of Resources Utilization, Ass, 資源化学研究所, 助教授 (10155624)
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| Project Period (FY) |
1988 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1988: ¥4,700,000 (Direct Cost: ¥4,700,000)
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| Keywords | radical / infrared spectroscopy / aluminum single crystal / diiode methane / carbene / ultra high vacuum / selection rule / orientation / 選択則 / 典型元素 / 表面 / ジョ-ドメタン / アルミニウム / 単結晶 / エッチング / アルミニウムハイドライド / 高感度反射赤外分光法 |
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| Research Abstract |
The study of CH_2I_2 adsorbed on Al (111) single crystal surface was conducted by double modulated-Fourier transform infrared reflection adsorption spectroscopy (DM-FTIRAS), low energy electron diffraction (LEED), auger electron spectroscopy (AES) and temperature programmed desorption (TPD) in ultra-high vacuum chamber. The back ground pressure was 3x10_<10> torr. By DM-FTIRAS, CH_2I_2 on clean A1 (111) at 100 K was observed. It is found that CH_2I_2 was partly reacted with Al surface to form hydrocarbon species even at 100 K. This species shows two C-H stretching bands at lower frequencies than those of molecularly adsorbed CH_2I_2. When the amount of adsorbed CH_2I_2 was increased, the amount of molecularly adsorbed CH_2I_2 increased, suggested by the intensity of asymmetric stretching of CH_2 group at ca. 3000 cm^<-1>. Further, the orientation at adsorbed CH_2I_2 was examined from the view point of selection rule of infrared absorption on metal surface. As a result it was concluded that the I-C-I plane of CH_2I_2 is parallel with Al surface and the H-C-H plane is perpendicular to the surface. This means the strong interaction of I atoms with Al atoms leads to the formation of carbene and ethylene species on the surface.
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Report
(4 results)
Research Products
(12 results)
