2006 Fiscal Year Final Research Report Summary
Energy partition dynamics in CO oxidation on transition metal surfaces
| Project/Area Number |
17350002
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 |
YAMANAKA Toshiro Hokkaido University, Catalysis Research Center, Research Associate, 触媒化学研究センター, 助手 (10261356)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUSHIMA Tatsuo Hokkaido University, Catalysis Research Centes, Professor, 触媒化学研究センター, 教授 (30002116)
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| Project Period (FY) |
2005 – 2006
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| Keywords | Catalysis / Surface Reaction Dynamics / CO oxidation / Internal Energy Measurement / Chemiluminescence |
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| Research Abstract |
Measurements of both vibrational and rotational energies of product CO_2 in CO oxidation on palladium surfaces have been successfully performed as a function of the desorption angle by means of infrared chemiluminescence. The remarkable angle dependences of both energies indicate facile energy partitioning in repulsive desorption and provide new dimensions in the study of surface reaction dynamics as well as additional insights into the product formation site.
On Pd(110) (1×1), with increases in polar angle, both energies decreased in the [001] direction but remained constant in [110]. On Pd(110) (1×2), both energies increased in [001] but decreased in [110]. On Pd(111), the rotational energy greatly increased, but the vibrational energy decreased. Such angular dependence of internal energy of products has never been observed in any surface reactions. From these results, it is possible to predict structures of transition states.
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