Catalytic properties of nanostructured Pt and Ru metal clusters over alumina promoted by CeO2

被引：8
|
作者：
Dossumov, K. [1 ]
Salakhova, R. Kh. [1 ]
Popova, N. M. [1 ]
Tungatarova, S. A. [1 ]
Grigorieva, V. P. [1 ]
Komashko, L. V. [1 ]
Sass, A. S. [1 ]
机构：
[1] DV Sokolsky Inst Organ Catalysis & Elect Chem, Alma Ata 050010, Kazakhstan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷 / SPEC. ISS.期
关键词：
clusters; metals; nanostructures; X-ray diffraction; transmission electron microscopy;
D O I：
10.1016/j.jallcom.2006.08.187
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：
0.5%Pt-0.5%Ru/2%Ce/(theta + alpha)-Al2O3, reduced by H-2, at 1173 K, presents a mixture of Pt and Ru (3-30 nm) nanoparticles in reduced and partially oxidised condition surrounded by larger formations of surface compound CeAlO3 with perovskite structure and oxide Ce6O11 (15-80 nm). High conversion of CH4 and selectivity for CO and H-2 (close to 100%) at short contact times (2.35-8 x 10(-3) s) are observed by using that catalyst in catalytic partial oxidation of CH4 to synthesis-gas at 1173 K and atmospheric pressure. Methane is activated on Pt and Ru metal clusters while oxygen is activated on Ce oxide nanostructures. (C) 2006 Published by Elsevier B.V.
引用
收藏
页码：796 / 798
页数：3
相关论文
共 50 条
  • [31] Physicochemical and catalytic properties of NiSO4/CeO2-ZrO2Catalyst promoted with CeO2 for acid catalysis
    Sohn, Jong Rack
    Shin, Dong Cheol
    BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2007, 28 (08) : 1265 - 1272
  • [32] Catalytic liquid-phase oxidation of acetaldehyde to acetic acid over a Pt/CeO2–ZrO2–SnO2/γ-alumina catalyst
    Pil-Gyu Choi
    Takanobu Ohno
    Toshiyuki Masui
    Nobuhito Imanaka
    Journal of Environmental Sciences , 2015, (10) : 63 - 66
  • [33] Influence of CeO2 supports prepared with different precipitants over Ru/CeO2 catalysts for ammonia synthesis
    Li, Wei
    Liu, Pengcheng
    Niu, Ruyue
    Li, Jinping
    Wang, Shuang
    SOLID STATE SCIENCES, 2020, 99
  • [34] Morphology effect of Ru/CeO2 catalysts for the catalytic combustion of chlorobenzene
    Huang, Hao
    Dai, Qiguang
    Wang, Xingyi
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 158 : 96 - 105
  • [35] The effect of CeO2 on the surface and catalytic properties of Pt/CeO2-ZrO2 catalysts for methane dry reforming
    Damyanova, S.
    Pawelec, B.
    Arishtirova, K.
    Martinez Huerta, M. V.
    Fierro, J. L. G.
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 89 (1-2) : 149 - 159
  • [36] Redox properties of CeO2 and Pt-Rh/CeO2 studied by TAP method
    Zhaoxia Song
    Hiroyasu Nishiguchi
    Wei Liu
    Hiroshi Yamada
    Akihide Takami
    Kumiko Kudo
    Katsutoshi Nagaoka
    Yusaku Takita
    Catalysis Letters, 2006, 111 : 169 - 171
  • [37] Redox properties of CeO2 and Pt-Rh/CeO2 studied by TAP method
    Song, Zhaoxia
    Nishiguchi, Hiroyasu
    Liu, Wei
    Yamada, Hiroshi
    Takami, Akihide
    Kudo, Kumiko
    Nagaoka, Katsutoshi
    Takita, Yusaku
    CATALYSIS LETTERS, 2006, 111 (3-4) : 169 - 171
  • [38] Promoting effect of CeO2 in Pt/CeO2 catalyst:: Stabilization of Pt ions and their enhanced reactivities compared to Pt metal particles.
    Hegde, MS
    Bera, P
    Gayen, A
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2001, 222 : U366 - U366
  • [39] Synthesis and catalytic properties of CeO2 and Co/CeO2 nanofibres for diesel soot combustion
    Kumar, Pullur Anil
    Tanwar, Manju Dhakad
    Russo, Nunzio
    Pirone, Raffaele
    Fino, Debora
    CATALYSIS TODAY, 2012, 184 (01) : 279 - 287
  • [40] Prevailing surface reactions in the plasma-catalytic ammonia synthesis with Ru/CeO2 and Ru/Ti-CeO2
    van Raak, T. A. B. J.
    Li, S.
    Gallucci, F.
    CHEMICAL ENGINEERING JOURNAL, 2023, 455
12345