C-O bond scission on "defect-rich and perfect" Pd(111)?

被引：45
|
作者：
Kaichev, VV
Morkel, M
Unterhalt, H
Prosvirin, IP
Bukhtiyarov, VI
Rupprechter, G
Freund, HJ
机构：
[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
[2] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
SURFACE SCIENCE | 2004年 / 566卷
关键词：
carbon monoxide; alcohols; palladium; sum frequency generation; X-ray photoelectron spectroscopy; catalysis; low index single crystal surfaces;
D O I：
10.1016/j.susc.2004.06.100
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To investigate the influence of surface defects on CO adsorption and dissociation, well-annealed and "defect-rich" Pd(111) were examined by sum frequency generation (SFG) and X-ray photoelectron spectroscopy (XPS) within the pressure range 10(-6)-1 mbar. Ar+ ion sputtering was employed to produce surface defects which exhibited vibrational and photoemission characteristics different from the regular adsorption sites on Pd(111). Even under high-pressure, SFG and XPS indicated that no CO dissociation occurred on both surfaces at 300-400 K. By contrast, C-O bond scission was observed during methanol decomposition producing carbonaceous deposits beside CO and H-2. A possible relationship between the adsorption geometry and C-O bond scission is discussed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：1024 / 1029
页数：6
相关论文
共 50 条
  • [31] Controllable formation of defect-rich Pd and Pd-Ag bimetallic nanocrystals through coalescence mechanism
    Zheng, Zhaoliang
    Gao, Shuiying
    Li, Hongfang
    Cao, Rong
    CHEMICAL COMMUNICATIONS, 2010, 46 (35) : 6518 - 6520
  • [32] Photocatalytic reductive C-O bond scission promoted by low-work-function Cd single atoms and clusters
    Sun, Lulu
    Huang, Yike
    Liu, Shiyang
    Liu, Xiumei
    Luo, Nengchao
    Wang, Feng
    CHEMICAL COMMUNICATIONS, 2023, 59 (15) : 2102 - 2105
  • [33] Orthogonal C-O Bond Construction with Organogermanes
    Dahiya, Amit
    Gevondian, Avetik G.
    Schoenebeck, Franziska
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2023, 145 (14) : 7729 - 7735
  • [34] CLEAVAGE OF C-O BOND BY ORGANOMAGNESIUM COMPOUNDS
    TROFIMOV, BA
    KOROSTOVA, SE
    USPEKHI KHIMII, 1975, 44 (01) : 75 - 103
  • [35] Use of tunable ligands allows for intermolecular Pd-catalyzed C-O bond formation
    Vorogushin, AV
    Huang, XH
    Buchwald, SL
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (22) : 8146 - 8149
  • [36] Understanding the Role of Metal-Modified Mo(110) Bimetallic Surfaces for C-O/C=O and C-C Bond Scission in C3 Oxygenates
    Myint, MyatNoeZin
    Chen, Jingguang G.
    ACS CATALYSIS, 2015, 5 (01): : 256 - 263
  • [37] Unraveling Unique Surface Chemistry of Transition Metal Nitrides in Controlling Selective C-O Bond Scission Pathways of Glycerol
    Lin, Zhexi
    Ammal, Salai C.
    Denny, Steven R.
    Rykov, Sergei A.
    You, Kyung-Eun
    Heyden, Andreas
    Chen, Jingguang G.
    JACS AU, 2022, 2 (02): : 367 - 379
  • [38] Use of tunable ligands allows for intermolecular Pd-catalyzed C-O bond formation
    Vorogushin, Andrei V.
    Huang, Xiaohua
    Buchwald, Stephen L.
    Journal of the American Chemical Society, 2005, 127 (22): : 8146 - 8149
  • [39] C-O bond scission in heterometallic alkoxides. Formation and structure of K4Zr2O(OiPr)10
    Vaartstra, Brian A.
    Streib, William E.
    Caulton, Kenneth G.
    Journal of the American Chemical Society, 1990, 112 (23):
  • [40] Strategies for Perfect Confinement of POM@MOF and Its Applications in Producing Defect-Rich Electrocatalyst
    Luo, Xingyu
    Li, Fengjiao
    Peng, Fei
    Huang, Lizhen
    Lang, Xiaoling
    Shi, Meiqin
    ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (48) : 57803 - 57813
12345