Energy partition dynamics in CO oxidation on transition metal surfaces

过渡金属表面CO氧化的能量分配动力学

• 批准号: 17350002
• 负责人: YAMANAKA Toshiro
• 金额: $ 6.34万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17350002/
• 关键词: Catalysis; Surface Reaction Dynamics; CO oxidation; Internal Energy Measurement; Chemiluminescence; 反応ダイナミクス; 振動回転エネルギー; 赤外発光分光; 角度分解測定

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.

用红外化学发光技术成功地测量了钯表面CO氧化过程中产物CO_2的振动能和旋转能与解吸角的关系。这两种能量的显著角度依赖性表明排斥解吸过程中的能量分配容易，为表面反应动力学的研究提供了新的维度，以及对产物形成部位的进一步了解。在Pd(110) （1×1）上，随着极角的增大，两种能量在[001]方向上减小，但在[110]方向上保持不变。在Pd(110) （1×2）上，两种能量在[001]中均增加，而在[110]中均减少。在Pd（111）上，旋转能大大增加，但振动能降低。这种生成物内能的角依赖关系在任何表面反应中从未见过。根据这些结果，可以预测过渡态的结构。

项目成果

表面物性工学ハンドブック

表面性能工程手册

• 发表时间: 2007
• 作者: 須藤彰三;他(共著)
• 通讯作者: 他(共著)

Inclined N_2 Desorption in a Steady-state NO+CO Reaction on Pt(100).

Pt(100) 上稳态 NO CO 反应中的倾斜 N_2 解吸。

• 发表时间: 2005
• 期刊: J.Phys.Chem.B 109
• 作者: Qiang Xu;Ling Jiang;Ru-Qiang Zou;松島龍夫
• 通讯作者: 松島龍夫

Atomic depth distribution and growth modes of In and Ga on Si(111) surfaces studied by reflection high-energy electron diffraction (RHEED) and total-reflection-angle x-ray spectroscopy(TRAXS)",

利用反射高能电子衍射(RHEED)和全反射角X射线能谱(TRAXS)研究In和Ga在Si(111)表面的原子深度分布和生长模式"

• 发表时间: 2005
• 期刊: Recent Research Developments in Crystal Growth 4
• 作者: Ling Jiang;Qiang Xu;山中俊朗
• 通讯作者: 山中俊朗

Surface-nitrogen removal in NO reduction on Pd(110) and its retardation by oxygen : Angle-resolved desorption studies

Pd(110) 上 NO 还原的表面氮去除及其氧气的阻滞：角分辨解吸研究

• 发表时间: 2006
• 期刊: CATALYSIS TODAY 117
• 作者: Yun-Lei Teng;Qiang Xu;M. Futamata;H.Tsunoyama et al.;Y.S.Ma
• 通讯作者: Y.S.Ma

The collimation angle shift of desorbing product N_2 in a steady-state N_2O+CO reaction on Rh(110)

Rh(110)上稳态N_2O CO反应中解吸产物N_2的准直角位移

• 发表时间: 2006
• 期刊: JOURNAL OF CHEMICAL PHYSICS 125
• 作者: F.Misaizu;M.Tsuruta;H.Tsunoyama;A.Furuya;K.Ohno;M.Lintuluoto;T.Matsushima
• 通讯作者: T.Matsushima