Reduction behavior of nanostructured gold catalysts supported on mesoporous titania and zirconia

被引:34
作者
Ilieva, L
Sobczak, JW
Manzoli, M
Su, BL
Andreeva, D [1 ]
机构
[1] Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, Bulgaria
[2] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
[3] Univ Turin, Dept Chem, IFM, I-10125 Turin, Italy
[4] Fac Univ Notre Dame Paix, CMI, B-5000 Namur, Belgium
关键词
nanosized gold; nanostructured mesoporous zirconia and titania; reduction behavior; TPR; ESR; XPS; HRTEM;
D O I
10.1016/j.apcata.2005.01.043
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
The reduction behavior of gold supported catalysts on mesoporous titania and zirconia was studied. The TPR, ESR, HRTEM and XPS methods were applied for the characterization of the state and structure of the catalysts. It was established that the nature of support plays a decisive role in the reactivity of the catalysts, in particular in their redox properties. The mesoporous nanostructured materials used in this study as supports for gold nanoparticles show very different behavior under hydrogen treatment. The ability of nanostructured zirconia to create F-centers leads to different charging of the supports surface, e.g. the supported gold nanoparticles which is the main reason for the observed differences between the both studied gold supported catalysts on mesoporous titania and zirconia. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:85 / 92
页数:8
相关论文
共 33 条
[1]   Gold-vanadia catalysts supported on ceria-alumina for complete benzene oxidation [J].
Andreeva, D ;
Nedyalkova, R ;
Ilieva, L ;
Abrashev, MV .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 52 (03) :157-165
[2]   Nanosize gold catalysts promoted by vanadium oxide supported on titania and zirconia for complete benzene oxidation [J].
Andreeva, D ;
Tabakova, T ;
Ilieva, L ;
Naydenov, A ;
Mehanjiev, D ;
Abrashev, MV .
APPLIED CATALYSIS A-GENERAL, 2001, 209 (1-2) :291-300
[3]  
[Anonymous], HDB XRAY PHOTOELECTR
[4]  
BOCCUZZI F, 1998, CATAL LETT, V56, P195
[5]   Nanocrystalline CeO2 increases the activity of an for CO oxidation by two orders of magnitude [J].
Carrettin, S ;
Concepción, P ;
Corma, A ;
Nieto, JML ;
Puntes, VF .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (19) :2538-2540
[6]   The structure of catalytically active gold on titania [J].
Chen, MS ;
Goodman, DW .
SCIENCE, 2004, 306 (5694) :252-255
[7]   Hydrogenation of crotonaldehyde on Pt/TiO2 catalysts:: Influence of the phase composition of titania on activity and intramolecular selectivity [J].
Claus, P ;
Schimpf, S ;
Schodel, R ;
Kraak, P ;
Morke, W ;
Honicke, D .
APPLIED CATALYSIS A-GENERAL, 1997, 165 (1-2) :429-441
[8]   Supported gold nanoparticles from quantum dot to mesoscopic size scale:: Effect of electronic and structural properties on catalytic hydrogenation of conjugated functional groups [J].
Claus, P ;
Brückner, A ;
Mohr, C ;
Hofmeister, H .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (46) :11430-11439
[9]   The relationship between the structure and activity of nanometer size gold when supported on Mg(OH)2 [J].
Cunningham, DAH ;
Vogel, W ;
Kageyama, H ;
Tsubota, S ;
Haruta, M .
JOURNAL OF CATALYSIS, 1998, 177 (01) :1-10
[10]   Substrate and morphology effects on photoemission from core-levels in gold clusters [J].
Dalacu, D ;
Klernberg-Sapieha, JE ;
Martinu, L .
SURFACE SCIENCE, 2001, 472 (1-2) :33-40