Deactivation of Cobalt-Based Catalysts for Fischer-Tropsch Synthesis

被引：2
|
作者：
Shi Lihong [1 ,2 ]
Li Xiaofeng [3 ]
Li Debao [2 ]
Sun Yuhan [2 ]
机构：
[1] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Shanxi, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
[3] Taiyuan Infant Normal Sch, Taiyuan 030027, Shanxi, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2010年 / 31卷 / 12期
基金：
欧盟地平线“2020”;
关键词：
cobalt; ruthenium; Fischer-Tropsch synthesis; hydrophobically-organic modification; deactivation; PROMOTED CO/AL2O3 CATALYST; CO/ZRO2/SIO2; CATALYST; CARBON DEPOSITION; CO/SIO2; CATALYSTS; WATER; CO; HYDROGENATION; MECHANISM; XAFS;
D O I：
10.3724/SP.J.1088.2010.00617
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Stability tests of Co/SiO(2), Co/Ru/SiO(2), and hydrophobically-organically modified Co/Ru/SiO(2) (Co/Ru/SiO(2)-S) for Fischer-Tropsch synthesis were carried out. As the time on stream went on. CO conversion decreased in all the cases. The growth of cobalt crystallite and the formation of cobalt silicates species were the reasons for Co/SiO(2) deactivation, while the deactivation of Co/Ru/SiO(2) and Co/Ru/SiO(2)-S was only attributed to the growth of cobalt crystallite. The stability of the catalysts was in order of Co/Ru/SiO(2)-S > Co/SiO(2) > Co/Ru/SiO(2). Compared with Co/SiO(2), the faster deactivation rate for Co/Ru/SiO(2) was ascribed to the agglomeration of smaller metal clusters, which were more unstable than the larger metal clusters and therefore more susceptible to sintering processes. Co/Ru/SiO(2)-S showed the best stability because of no formation of cobalt silicates species and the slow growth of cobalt crystallite.
引用
收藏
页码：1483 / 1488
页数：6
相关论文
共 36 条
  • [1] Ali S., 1995, J. Catal, V157, P35
  • [2] Characterisation of Co/SiO2 catalysts prepared from Co(acac)3 by gas phase deposition
    Backman, LB
    Rautiainen, A
    Lindblad, M
    Jylhä, O
    Krause, AOI
    [J]. APPLIED CATALYSIS A-GENERAL, 2001, 208 (1-2) : 223 - 234
  • [3] Mechanisms of catalyst deactivation
    Bartholomew, CH
    [J]. APPLIED CATALYSIS A-GENERAL, 2001, 212 (1-2) : 17 - 60
  • [4] CARBON DEPOSITION IN STEAM REFORMING AND METHANATION
    BARTHOLOMEW, CH
    [J]. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1982, 24 (01): : 67 - 112
  • [5] Fischer-Tropsch catalysis: The basis for an emerging industry with origins in the early 20th Century
    Casci, John L.
    Lok, C. Martin
    Shannon, Mervyn D.
    [J]. CATALYSIS TODAY, 2009, 145 (1-2) : 38 - 44
  • [6] Chen J, 2001, STUD SURF SCI CATAL, V136, P525
  • [7] Study on deactivation of Co/ZrO2/SiO2 catalyst for Fischer-Tropsch synthesis
    Chen, JG
    Xiang, HW
    Gao, HY
    Sun, YH
    [J]. REACTION KINETICS AND CATALYSIS LETTERS, 2001, 73 (01): : 169 - 177
  • [8] CHEN JG, 2000, CHINESE J CATAL, V21, P359
  • [9] Cobalt species in promoted cobalt alumina-supported Fischer-Tropsch catalysts
    Chu, Wei
    Chernavskii, Petr A.
    Gengembre, Leon
    Pankina, Galina A.
    Fongarland, Pascal
    Khodakov, Andrei Y.
    [J]. JOURNAL OF CATALYSIS, 2007, 252 (02) : 215 - 230
  • [10] Fischer-Tropsch synthesis: A review of water effects on the performances of unsupported and supported Co catalysts
    Dalai, A. K.
    Davis, B. H.
    [J]. APPLIED CATALYSIS A-GENERAL, 2008, 348 (01) : 1 - 15
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