Li/MgO with spin sensors as catalyst for the oxidative coupling of methane

被引：21
|
作者：
Simon, U. [1 ]
Arndt, S. [2 ]
Otremba, T. [2 ]
Schlingmann, T. [1 ]
Goerke, O. [1 ]
Dinse, K. -P. [3 ]
Schomaecker, R. [2 ]
Schubert, H. [1 ]
机构：
[1] Tech Univ Berlin, Inst Werkstoffwissensch & Technol, D-10587 Berlin, Germany
[2] Tech Univ Berlin, Dept Chem, D-10623 Berlin, Germany
[3] Free Univ Berlin, D-14195 Berlin, Germany
来源：
CATALYSIS COMMUNICATIONS | 2012年 / 18卷
关键词：
Oxidative coupling of methane; Li/MgO; Transition metal oxides; Cation substitution; Spin sensor; EPR; PROMOTED MGO CATALYSTS; METAL-OXIDES; FREE OXYGEN; MN; LI; PERFORMANCE; CONVERSION; MANGANESE; REACTOR; LITHIUM;
D O I：
10.1016/j.catcom.2011.11.021
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：
Co-doping of Li/MgO, a well-known catalyst for the oxidative coupling of methane, was investigated. It is demonstrated that Gd3+ and Fe3+ can be used as spin sensors in these solids to investigate the structure via EPR spectroscopy. These aliovalent ions occupy Mg2+ sites in the lattice; the expected coupling with charge-compensating neighboring Li+ was detected. A strong increase of the activity was observed. However, all samples suffered from deactivation. The solubility of Gd3+ in MgO turned out to be inhibited. No such restriction was observed for Fe3+. (C) 2011 Published by Elsevier B.V.
引用
收藏
页码：132 / 136
页数：5
相关论文
共 50 条
  • [1] Oxidative Coupling of Methane over Li/MgO: Catalyst and Nanocatalyst Performance
    Farsi, Ali
    Moradi, Ali
    Ghader, Sattar
    Shadravan, Vahid
    [J]. CHINESE JOURNAL OF CHEMICAL PHYSICS, 2011, 24 (01) : 70 - 76
  • [2] OXIDATIVE COUPLING OF METHANE USING LI/MGO CATALYST - REAPPRAISAL OF THE OPTIMUM LOADING OF LI
    HUTCHINGS, GJ
    SCURRELL, MS
    WOODHOUSE, J
    [J]. CATALYSIS LETTERS, 1990, 5 (03) : 301 - 308
  • [3] ROLE OF LI ION IN LI-MN-MGO CATALYST FOR OXIDATIVE COUPLING OF METHANE
    ZHANG, JJ
    YANG, XG
    BI, YL
    ZHEN, KJ
    [J]. CATALYSIS TODAY, 1992, 13 (04) : 555 - 558
  • [4] KINETIC AND MECHANISTIC ASPECTS OF THE OXIDATIVE COUPLING OF METHANE OVER A LI/MGO CATALYST
    ROOS, JA
    KORF, SJ
    VEEHOF, RHJ
    VANOMMEN, JG
    ROSS, JRH
    [J]. APPLIED CATALYSIS, 1989, 52 (1-2): : 131 - 145
  • [5] Study of the kinetics of the oxidative coupling of methane over a Li/Sn/MgO catalyst
    [J]. Korf, S.J., 1600, (06):
  • [6] CARBON-DIOXIDE CHEMISTRY DURING OXIDATIVE COUPLING OF METHANE ON A LI/MGO CATALYST
    GALUSZKA, J
    [J]. CATALYSIS TODAY, 1994, 21 (2-3) : 321 - 331
  • [7] Oxidative coupling of methane for the production of ethylene over Li-Ni/MgO catalyst
    Ramasamy, S
    Mohamed, AR
    Bhatia, S
    [J]. REACTION KINETICS AND CATALYSIS LETTERS, 2002, 75 (02): : 353 - 358
  • [8] Kinetic modeling of oxidative coupling of methane over Li/MgO catalyst by genetic algorithm
    Vatani, Ali
    Jabbari, Ehsan
    Askarieh, Mojtaba
    Torangi, Mohammad Ali
    [J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, 2014, 20 : 347 - 356
  • [9] SURFACE COMPOSITION AND OXIDATIVE COUPLING OF METHANE OVER Sm-Li-MgO CATALYST
    SHI Jun-Xiong XU Gui-Fen WANG Tao WANG Xue-Lin LI Yu-Shan WANG Gong-WeiDalian Institute uf Chemical /Physics
    [J]. Journal of Energy Chemistry, 1994, (04) : 401 - 407
  • [10] THE EFFECT OF CHLORIDE-IONS ON A LI+-MGO CATALYST FOR THE OXIDATIVE COUPLING OF METHANE
    LUNSFORD, JH
    HINSON, PG
    ROSYNEK, MP
    SHI, CL
    XU, MT
    YANG, XM
    [J]. JOURNAL OF CATALYSIS, 1994, 147 (01) : 301 - 310
12345