Characterisation of Ru/C catalysts for ammonia synthesis by oxygen chemisorption

被引：51
|
作者：
Rossetti, I
Pernicone, N
Forni, L
机构：
[1] Univ Milan, Dipartimento Chim Fis & Elettrochim, I-20133 Milan, Italy
[2] Univ Milan, Dipartimento Chim Fis & Elettrochim, Novara, Italy
来源：
APPLIED CATALYSIS A-GENERAL | 2003年 / 248卷 / 1-2期
关键词：
O-2; chemisorption; Ru/C catalyst; ammonia synthesis; Ru metal dispersion;
D O I：
10.1016/S0926-860X(03)00151-0
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：
A standard chemisorption procedure has been set up for the determination of Ru dispersion in Ru/C catalysts. Pulse chemisorption of oxygen was carried out at 0 degreesC, after having proved that no corrosive chemisorption phenomena are present. An average chemisorption stoichiometry Ru*/O = 1.0 was experimentally determined through measurements on Ru black. The procedure was applied to the investigation of promoted and unpromoted Ru/C catalysts for ammonia synthesis, supported on two different carbon supports. The main factor influencing Ru dispersion showed to be Ru loading, while the addition of even large amounts of Ba-Cs-K promoters has practically no influence. It is also briefly discussed how such results can help in elucidating several aspects of the behaviour of Ru/C as catalyst for ammonia synthesis. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：97 / 103
页数：7
相关论文
共 50 条
  • [41] Mechanism and isotope effect of ammonia synthesis over Fe and Ru catalysts
    Lin, J. D.
    Liao, D. W.
    Zhang, H. B.
    Wan, H. L.
    Tsai, K. R.
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2009, 237 : 834 - 834
  • [42] Essential Role of Ru-Anion Interaction in Ru-Based Ammonia Synthesis Catalysts
    Zhou, Yanliang
    Peng, Xuanbei
    Zhang, Tianhua
    Cai, Hongfang
    Lin, Bingyu
    Zheng, Lirong
    Wang, Xiuyun
    Jiang, Lilong
    ACS CATALYSIS, 2022, 12 (13) : 7633 - 7642
  • [43] THE CHARACTERIZATION OF SILVER CATALYSTS BY CHEMISORPTION OF OXYGEN
    KRIPYLO, P
    EICHNER, S
    HAMMOUDEH, A
    CHEMISCHE TECHNIK, 1990, 42 (09): : 396 - 399
  • [44] OXYGEN-CHEMISORPTION ON SILVER CATALYSTS
    BOGDANCHIKOVA, NE
    BORESKOV, GK
    BUYANOVA, NE
    KOVRIZHINA, OV
    KHASIN, AV
    REACTION KINETICS AND CATALYSIS LETTERS, 1979, 12 (03): : 201 - 205
  • [45] HYDROGEN CHEMISORPTION SUPPRESSION IN RU-ZEOLITE CATALYSTS
    WANG, HT
    CHEN, YW
    GOODWIN, JG
    ZEOLITES, 1984, 4 (01): : 56 - 60
  • [46] Erratum to: “Synthesis and study of Ru–Ba–Cs/Sibunit ternary catalysts for ammonia synthesis”
    K. N. Iost
    V. L. Temerev
    N. S. Smirnova
    D. A. Shlyapin
    V. A. Borisov
    I. V. Muromtsev
    M. V. Trenikhin
    T. V. Kireeva
    A. V. Shilova
    P. G. Tsyrul’nikov
    Russian Journal of Applied Chemistry, 2018, 91 : 882 - 882
  • [47] Synthesis and Study of Ru-Ba-Cs/Sibunit Ternary Catalysts for Ammonia Synthesis
    Iost, K. N.
    Temerev, V. L.
    Smirnova, N. S.
    Shlyapin, D. A.
    Borisov, V. A.
    Muromtsev, I. V.
    Trenikhin, M. V.
    Kireeva, T. V.
    Shilova, A. V.
    Tsyrul'nikov, P. G.
    RUSSIAN JOURNAL OF APPLIED CHEMISTRY, 2017, 90 (06) : 887 - 894
  • [48] Vibrational enhancement in the dynamics of ammonia dissociative chemisorption on Ru(0001)
    Hu, Xixi
    Yang, Minghui
    Xie, Daiqian
    Guo, Hua
    JOURNAL OF CHEMICAL PHYSICS, 2018, 149 (04):
  • [49] EXAFS-XANES Evidence of in Situ Cesium Reduction in Cs-Ru/C Catalysts for Ammonia Synthesis
    Rossetti, Ilenia
    Sordelli, Laura
    Ghigna, Paolo
    Pin, Sonia
    Scavini, Marco
    Forni, Lucio
    INORGANIC CHEMISTRY, 2011, 50 (08) : 3757 - 3765
  • [50] CHROMATOGRAPHIC METHOD TO DETERMINE ACIDITY OF CATALYSTS BY CHEMISORPTION OF AMMONIA
    POPOWICZ, M
    BERAK, JM
    BAZARNIK, A
    PRZEMYSL CHEMICZNY, 1972, 51 (02): : 92 - &
12345