Direct observation of key reaction intermediates on gold clusters

被引:195
作者
Stolcic, D
Fischer, M
Ganteför, G
Kim, YD [1 ]
Sun, Q
Jena, P
机构
[1] Univ Konstanz, Dept Phys, D-78457 Constance, Germany
[2] Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA
关键词
D O I
10.1021/ja0293406
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Using ultraviolet photoelectron spectroscopy, we provide direct experimental evidence that di-oxygen species are stable on anionic gold dimer and tetramer clusters at room temperature. The stabilization of molecular oxygen is crucial for the high activities of the low-temperature reactions on gold catalysts. Copyright © 2003 American Chemical Society.
引用
收藏
页码:2848 / 2849
页数:2
相关论文
共 24 条
[1]   FTIR study of CO oxidation on Au/TiO2 at 90 K and room temperature.: An insight into the nature of the reaction centers [J].
Boccuzzi, F ;
Chiorino, A .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (23) :5414-5416
[2]   FTIR study of the electronic effects of CO adsorbed on gold nanoparticles supported on titania [J].
Boccuzzi, F ;
Chiorino, A ;
Manzoli, M .
SURFACE SCIENCE, 2000, 454 (01) :942-946
[3]   Oxygen adsorption on well-defined gold particles on TiO2(110) [J].
Bondzie, VA ;
Parker, SC ;
Campbell, CT .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1999, 17 (04) :1717-1720
[4]   NEW EXPERIMENTAL SETUP FOR PHOTOELECTRON-SPECTROSCOPY ON CLUSTER ANIONS [J].
CHA, CY ;
GANTEFOR, G ;
EBERHARDT, W .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1992, 63 (12) :5661-5666
[5]  
Engel T., 1979, ADV CATALYSIS VOLUME, V28, P1, DOI DOI 10.1016/S0360-0564(08)60133-9
[6]   PURE METAL AND METAL-DOPED RARE-GAS CLUSTERS GROWN IN A PULSED-ARC CLUSTER ION-SOURCE [J].
GANTEFOR, G ;
SIEKMANN, HR ;
LUTZ, HO ;
MEIWESBROER, KH .
CHEMICAL PHYSICS LETTERS, 1990, 165 (04) :293-296
[7]   Comparative study of Au/TiO2 and Au/ZrO2 catalysts for low-temperature CO oxidation [J].
Grunwaldt, JD ;
Maciejewski, M ;
Becker, OS ;
Fabrizioli, P ;
Baiker, A .
JOURNAL OF CATALYSIS, 1999, 186 (02) :458-469
[8]   Coadsorption of CO and O2 on small free gold cluster anions at cryogenic temperatures:: Model complexes for catalytic CO oxidation [J].
Hagen, J ;
Socaciu, LD ;
Elijazyfer, M ;
Heiz, U ;
Bernhardt, TM ;
Wöste, L .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (10) :1707-1709
[9]   Gas-phase catalytic oxidation of CO by Au2- [J].
Häkkinen, H ;
Landman, U .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (39) :9704-9705
[10]   A COMPARISON OF PHOTOELECTRON-SPECTROSCOPY AND 2-PHOTON IONIZATION SPECTROSCOPY - EXCITED-STATES OF AU-2, AU-3, AND AU-4 [J].
HANDSCHUH, H ;
GANTEFOR, G ;
BECHTHOLD, PS ;
EBERHARDT, W .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (10) :7093-7100