Catalytic Combustion of Methane over Rare Earth Stannate Pyrochlore

被引：8
|
作者：
Sarohan Park
Hae Jin Hwang
Jooho Moon
机构：
[1] Yonsei University,Department of Ceramic Engineering
[2] Korea Institute of Science and Technology,Advanced Materials Division
来源：
Catalysis Letters | 2003年 / 87卷
关键词：
catalytic combustion; methane; pyrochlore;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Well-defined Ln2Sn2O7 powders (Ln = La, Sm and Gd) with a phase-pure pyrochlore structure were synthesized by hydrothermal reaction. The catalytic activities of Ln2Sn2O7 powders for methane combustion were measured. Methane oxidation started at 500 °C and increased with oxidation temperature. Catalytic methane combustion is strongly influenced by the presence of oxygen vacancies that form by breaking Sn–O lattice bonds as the temperature increases. Addition of manganese to the rare earth pyrochlores improved methane oxidation activity. Manganese-doped samarium stannate pyrochlore (Sm2Sn1.8Mn0.2O7) shows highest the catalytic activity. Light-off and complete oxidation temperatures were measured at about 400 and 650 °C, respectively.
引用
收藏
页码：219 / 223
页数：4
相关论文
共 50 条
  • [31] Oxidative coupling of methane over alkali, alkaline earth, and rare earth oxides
    DeBoy, Jeffrey M.
    Hicks, Robert F.
    Industrial and Engineering Chemistry Research, 1988, 27 (09): : 1577 - 1582
  • [32] Stuffed rare earth pyrochlore solid solutions
    Lau, G. C.
    Muegge, B. D.
    McQueen, T. M.
    Duncan, E. L.
    Cava, R. J.
    JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (10) : 3126 - 3135
  • [33] Catalytic combustion of methane over tin dioxide supported silver catalysts
    Zhou, CJ
    Zhu, YX
    Xie, YC
    ACTA PHYSICO-CHIMICA SINICA, 2001, 17 (09) : 850 - 854
  • [34] Catalytic combustion of methane over Pd/SnO2 catalysts
    Zhao, Zhenyang
    Wang, Bowei
    Ma, Jian
    Zhan, Wangcheng
    Wang, Li
    Guo, Yanglong
    Guo, Yun
    Lu, Guanzhong
    CHINESE JOURNAL OF CATALYSIS, 2017, 38 (08) : 1322 - 1329
  • [35] Methane combustion over low-emission catalytic foam burners
    Cerri, I
    Saracco, G
    Specchia, V
    CATALYSIS TODAY, 2000, 60 (1-2) : 21 - 32
  • [36] Catalytic combustion of methane over cerium-doped palladium catalysts
    Thevenin, PO
    Alcalde, A
    Pettersson, LJ
    Järås, SG
    Fierro, JLG
    JOURNAL OF CATALYSIS, 2003, 215 (01) : 78 - 86
  • [37] Catalytic combustion of methane over red mud-based catalysts
    Paredes, JR
    Ordóñez, S
    Vega, A
    Díez, FV
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 47 (01) : 37 - 45
  • [38] CATALYTIC COMBUSTION OF METHANE OVER VARIOUS PEROVSKITE-TYPE OXIDES
    ARAI, H
    YAMADA, T
    EGUCHI, K
    SEIYAMA, T
    APPLIED CATALYSIS, 1986, 26 (1-2): : 265 - 276
  • [39] Catalytic Combustion of Methane over Ir/ZrO2 Catalysts
    Hu Panjing
    Meng Lian
    Ma Ruihong
    Jin Lingyun
    Lu Jiqing
    Luo Mengfei
    ACTA CHIMICA SINICA, 2011, 69 (18) : 2080 - 2084
  • [40] Catalytic combustion of methane over Co-Mn mixed oxides
    Li, WB
    Lin, Y
    Zhang, Y
    UTILIZATION OF GREENHOUSE GASES, 2003, 852 : 366 - 374
12345