EXAFS study in situ of the reducibility of a silica-supported cobalt Fischer-Tropsch catalyst

被引：3
|
作者：
Bensaddik, A
Ernst, B
Garin, F
Marie, G
Kiennemann, A
机构：
来源：
JOURNAL DE PHYSIQUE IV | 1996年 / 6卷 / C4期
关键词：
D O I：
10.1051/jp4:1996451
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The reduction under hydrogen flow of a 25% Co/SiO2 catalyst for the hydrocarbons synthesis have been followed in situ by Extended X-Ray Adsorption Fine Structure Spectroscopy (EXAFS). The analysis of the EXAFS spectra enables the identification of a Co3O4 spinel phase before treatment. The two step reduction of Co3O4 to CoO then Co degrees, as observed by EXAFS, is consistent with the studies in XPS (surface) and TPR (bulk). The coordination number of cobalt has been determined at each reduction step.
引用
收藏
页码：545 / 552
页数：8
相关论文
共 50 条
  • [1] Reducibility of cobalt species in silica-supported Fischer-Tropsch catalysts
    Khodakov, AY
    Lynch, J
    Bazin, D
    Rebours, B
    Zanier, N
    Moisson, B
    Chaumette, P
    JOURNAL OF CATALYSIS, 1997, 168 (01) : 16 - 25
  • [2] COBALT REDUCIBILITY AND MAGNESIUM PROMOTION IN SILICA-SUPPORTED FISCHER-TROPSCH CATALYSTS
    PUSKAS, I
    FLEISCH, TH
    HALL, JB
    MEYERS, BL
    ROGINSKI, RT
    STUDIES IN SURFACE SCIENCE AND CATALYSIS, 1993, 75 : 2813 - 2816
  • [3] Cobalt dispersion, reducibility, and surface sites in promoted silica-supported Fischer-Tropsch catalysts
    Girardon, J.-S.
    Quinet, E.
    Griboval-Constant, A.
    Chernavskii, P. A.
    Gengembre, L.
    Khodakov, A. Y.
    JOURNAL OF CATALYSIS, 2007, 248 (02) : 143 - 157
  • [4] Kinetics of the Fischer-Tropsch synthesis on silica-supported cobalt-cerium catalyst
    Mansouri, Mohsen
    Atashi, Hossein
    Mirzaei, Ali Akbar
    Jangi, Reza
    INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY, 2013, 4 (01)
  • [5] Fischer-Tropsch performance correlated to catalyst structure: Trends in activity and stability for a silica-supported cobalt catalyst
    Richard, Laura A.
    Moreau, Pierre
    Rugmini, Sreekala
    Daly, Francis
    APPLIED CATALYSIS A-GENERAL, 2013, 464 : 200 - 206
  • [6] Cobalt supported mesoporous silica catalyst for Fischer-Tropsch synthesis
    Yang, WS
    Gao, HY
    Xiang, HW
    Yin, DH
    Yang, Y
    Yang, JL
    Xu, YY
    Li, YY
    ACTA CHIMICA SINICA, 2001, 59 (11) : 1870 - 1877
  • [7] Hydrothermial deactivation of silica-supported cobalt catalysts in Fischer-Tropsch synthesis
    Kiss, G
    Kliewer, CE
    DeMartin, GJ
    Culross, CC
    Baumgartner, JE
    JOURNAL OF CATALYSIS, 2003, 217 (01) : 127 - 140
  • [8] Silica-supported rhodium-cobalt catalysts for Fischer-Tropsch synthesis
    Yan, Zhen
    Bukur, Dragomir B.
    Goodman, D. Wayne
    CATALYSIS TODAY, 2011, 160 (01) : 39 - 43
  • [9] Study on a cobalt silica catalyst during reduction and Fischer-Tropsch reaction: In situ EXAFS compared to XPS and XRD
    Catal Today, 4 (329-341):
  • [10] Study on a cobalt silica catalyst during reduction and Fischer-Tropsch reaction: In situ EXAFS compared to XPS and XRD
    Ernst, B
    Bensaddik, A
    Hilaire, L
    Chaumette, P
    Kiennemann, A
    CATALYSIS TODAY, 1998, 39 (04) : 329 - 341
12345