Low temperature CO oxidation over unsupported nanoporous gold

被引:572
作者
Xu, Caixia
Su, Jixin
Xu, Xiaohong
Liu, Pengpeng
Zhao, Hongjuan
Tian, Fang
Ding, Yi [1 ]
机构
[1] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China
[2] Shandong Univ, Sch Environm Sci & Engn, Jinan 250100, Peoples R China
关键词
D O I
10.1021/ja0675503
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Supported Au nanoclusters are well-known for their unusual properties in catalysis. We describe here that nanostructured porous Au made via dealloying represents a new class of unsupported catalysts with extraordinary activities in important reactions such as CO oxidation. Although nanoporous Au may contain some oxides on the surface, our results demonstrate that it is metallic Au that plays the main role in this catalytic reaction. Furthermore, this material has good low-temperature catalytic stability and is extremely CO tolerant. Copyright © 2006 American Chemical Society.
引用
收藏
页码:42 / 43
页数:2
相关论文
共 20 条
[1]   Oxidation of CO on gold supported catalysts prepared by laser vaporization: Direct evidence of support contribution [J].
Arrii, S ;
Morfin, F ;
Renouprez, AJ ;
Rousset, JL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (04) :1199-1205
[2]   Catalysis by gold [J].
Bond, GC ;
Thompson, DT .
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1999, 41 (3-4) :319-388
[3]   Oxidation-resistant gold-55 clusters [J].
Boyen, HG ;
Kästle, G ;
Weigl, F ;
Koslowski, B ;
Dietrich, C ;
Ziemann, P ;
Spatz, JP ;
Riethmüller, S ;
Hartmann, C ;
Möller, M ;
Schmid, G ;
Garnier, MG ;
Oelhafen, P .
SCIENCE, 2002, 297 (5586) :1533-1536
[4]   Support effect in high activity gold catalysts for CO oxidation [J].
Comotti, M ;
Li, WC ;
Spliethoff, B ;
Schüth, F .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (03) :917-924
[5]   The catalytic activity of "Naked" gold particles [J].
Comotti, M ;
Della Pina, C ;
Matarrese, R ;
Rossi, M .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (43) :5812-5815
[6]   Nanoporous gold leaf: "Ancient technology"/advanced material [J].
Ding, Y ;
Kim, YJ ;
Erlebacher, J .
ADVANCED MATERIALS, 2004, 16 (21) :1897-+
[7]   Metallic mesoporous nanocomposites for electrocatalysis [J].
Ding, Y ;
Chen, MW ;
Erlebacher, J .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) :6876-6877
[8]   Nanoporous metals with controlled multimodal pore size distribution [J].
Ding, Y ;
Erlebacher, J .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (26) :7772-7773
[9]   Evolution of nanoporosity in dealloying [J].
Erlebacher, J ;
Aziz, MJ ;
Karma, A ;
Dimitrov, N ;
Sieradzki, K .
NATURE, 2001, 410 (6827) :450-453
[10]   Direct evidence of oxidized gold on supported gold catalysts [J].
Fu, L ;
Wu, NQ ;
Yang, JH ;
Qu, F ;
Johnson, DL ;
Kung, MC ;
Kung, HH ;
Dravid, VP .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (09) :3704-3706