Characterization and tests of planar Co3O4 model catalysts prepared by chemical vapor deposition

被引:143
作者
Bahlawane, N
Rivera, EF
Kohse-Höinghaus, K
Brechling, A
Kleineberg, U
机构
[1] Univ Bielefeld, Fak Chem, D-33615 Bielefeld, Germany
[2] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany
关键词
CVD; planar model catalyst; temperature-programmed reduction; Co3O4; hydrocarbon oxidation; deactivation;
D O I
10.1016/j.apcatb.2004.06.001
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 chemical vapor deposition method was used to deposit thin films of cobalt oxide starting with cobalt (II) acetylacetonate and oxygen. The deposition process was investigated and the obtained films were identified as a cubic spinel-type polycrystalline Co3O4 with a crystallite size of 30-40 nm. The coating was carbon-free and the Surface oxygen concentration was measured to be 66 at.% with AES analysis. Smooth and highly uniform thin films were deposited on planar stainless steel substrates and subjected to TPR and catalysis tests that show positive correlation. The apparent activation energy Of Co3O4 reduction to COO was measured to be (33 +/- 5) kJ/mol. The catalytic activity of Co3O4 was investigated toward the conversion of both propane and ethanol to carbon dioxide. Though the catalytic action was registered at the same temperature. the deactivation process was seen to be different. The catalytic conversion of ethanol induces a fast deactivation process, which was linked to its high ability to reduce Co3O4. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:245 / 255
页数:11
相关论文
共 48 条
  • [1] Humidity-sensitive optical absorption of Co3O4 film
    Ando, M
    Kobayashi, T
    Haruta, M
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1996, 32 (02) : 157 - 160
  • [2] Optical recognition of CO and H-2 by use of gas-sensitive Au-Co3O4 composite films
    Ando, M
    Kobayashi, T
    Iijima, S
    Haruta, M
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (09) : 1779 - 1783
  • [3] Barreca D, 2001, CHEM MATER, V13, P588, DOI 10.1021/cm00104lx
  • [4] General study of catalytic oxidation of various VOCs over La0.8Sr0.2MnO3+x perovskite catalyst -: influence of mixture
    Blasin-Aubé, V
    Belkouch, J
    Monceaux, L
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 43 (02) : 175 - 186
  • [5] IR studies on the activation of C-H hydrocarbon bonds on oxidation catalysts
    Busca, G
    Finocchio, E
    Lorenzelli, V
    Ramis, G
    Baldi, M
    [J]. CATALYSIS TODAY, 1999, 49 (04) : 453 - 465
  • [6] On the role of acidity in catalytic oxidation
    Busca, G
    Finocchio, E
    Ramis, G
    Ricchiardi, G
    [J]. CATALYSIS TODAY, 1996, 32 (1-4) : 133 - 143
  • [7] Electrical conductivity of Co3O4 films prepared by chemical vapour deposition
    Cheng, CS
    Serizawa, M
    Sakata, H
    Hirayama, T
    [J]. MATERIALS CHEMISTRY AND PHYSICS, 1998, 53 (03) : 225 - 230
  • [8] Implications of platinum-group element accumulation along US roads from catalytic-converter attrition
    Ely, JC
    Neal, CR
    Kulpa, CF
    Schneegurt, MA
    Seidler, JA
    Jain, JC
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (19) : 3816 - 3822
  • [9] FTIR studies on the selective oxidation and combustion of light hydrocarbons at metal oxide surfaces .2. Propane and propene oxidation on Co3O4
    Finocchio, E
    Busca, G
    Lerenzelli, V
    Escribano, VS
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (09): : 1587 - 1593
  • [10] TEMPERATURE PROGRAMMED REDUCTION OF COPPER IONS IN ZEOLITES
    GENTRY, SJ
    HURST, NW
    JONES, A
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1979, 75 : 1688 - 1699