XAFS study of Fe- and Mn-promoted sulfated zirconia

被引：6
|
作者：
Yamamoto, T [1 ]
Tanaka, T
Takenaka, S
Yoshida, S
Onari, T
Takahashi, Y
Kosaka, T
Hasegawa, S
机构：
[1] Kyoto Univ, Dept Mol Engn, Kyoto 6068501, Japan
[2] Tokyo Gakugei Univ, Dept Chem, Tokyo 1848501, Japan
来源：
JOURNAL OF SYNCHROTRON RADIATION | 1999年 / 6卷
关键词：
in-situ XAFS; sulfated zirconia; Fe; Mn;
D O I：
10.1107/S0909049598017762
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The local structure around Fe and Mn in Fe. Mn-promoted sulfated zirconia was investigated by means of in-situ XAFS. The Mn atoms are found to be present as MnSO4 on the surface. The first post-edge peak of the Mn K-edge XANES spectrum was sharpened in a working state, and restored by evacuation. Fe K-edge XANES spectra showed that Fe is in a trivalent state and located at a center of a distorted octahedron. Fe atoms were suggested to be interstitially located into ZrO2 to form a solid solution. Any procedure dib not change the Fe K-edge EXAFS and the shape and edge-positions of the XANES spectra The reaction gases are in contact with Mn atoms, but not with the Mn atoms of the catalyst.
引用
收藏
页码：425 / 427
页数：3
相关论文
共 50 条
  • [1] XAFS study of Fe- and Mn-promoted sulfated zirconia
    Yamamoto, Takashi
    Tanaka, Tsunehiro
    Takenaka, Sakae
    Yoshida, Satohiro
    Onari, Tsutomu
    Takahashi, Yoshiaki
    Kosaka, Tomomi
    Hasegawa, Sadao
    Journal of Synchrotron Radiation, 1999, 6 (03): : 425 - 427
  • [2] Activation of light alkanes in the presence of FE- and MN-promoted sulfated zirconia.
    Cheung, TK
    Gates, BC
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1997, 213 : 143 - FUEL
  • [3] The effect of pretreatment procedures on the activities of Fe- and Mn-promoted sulfated zirconia catalysts
    Steven X. Song
    Ronald A. Kydd
    Catalysis Letters, 1998, 51 : 95 - 100
  • [4] The effect of pretreatment procedures on the activities of Fe- and Mn-promoted sulfated zirconia catalysts
    Song, SX
    Kydd, RA
    CATALYSIS LETTERS, 1998, 51 (1-2) : 95 - 100
  • [5] The effect of pretreatment procedures on the activities of Fe- and Mn-promoted sulfated zirconia catalysts
    Catal Lett, 1-2 (95):
  • [6] Esterification of acrylic acid with but-1-ene over sulfated Fe- and Mn-promoted zirconia
    Essayem, N.
    Martin, V.
    Riondel, A.
    Vedrine, J. C.
    APPLIED CATALYSIS A-GENERAL, 2007, 326 (01) : 74 - 81
  • [7] Induction of activity and deactivation of Fe, Mn-promoted sulfated zirconia catalysts
    Coelho, MA
    Alvarez, WE
    Sikabwe, EC
    White, RL
    Resasco, DE
    CATALYSIS TODAY, 1996, 28 (04) : 415 - 429
  • [8] Probing the low temperature initiation sites in Fe-, Mn-promoted sulfated zirconia via CO and H2 adsorption
    Sayari, A
    Yang, Y
    JOURNAL OF CATALYSIS, 1999, 187 (01) : 186 - 190
  • [9] STRUCTURE OF FE, MN-PROMOTED SULFATED ZIRCONIA CATALYST BY X-RAY AND IN ABSORPTION SPECTROSCOPIES
    TABORA, JE
    DAVIS, RJ
    JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1995, 91 (12): : 1825 - 1833
  • [10] On the atomic structure of Fe/Mn promoted sulfated zirconia
    Benaissa, M
    Santiesteban, JG
    Diaz, G
    JoseYacaman, M
    SURFACE SCIENCE, 1996, 364 (02) : L591 - L594
12345