CO oxidation over the Pt-Rh system. 2. Reaction on an alloy

被引:5
作者
Kalinkin, AV [1 ]
Pashis, AV [1 ]
Bukhtiyarov, VI [1 ]
机构
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源
REACTION KINETICS AND CATALYSIS LETTERS | 2003年 / 78卷 / 01期
基金
俄罗斯基础研究基金会;
关键词
CO oxidation reaction; alloy; platinum; rhodium;
D O I
10.1023/A:1022518017407
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
The oxidation of CO over thin films of a Pt-Rh alloy prepared by sequential vacuum evaporation of the metals on an inert support has been investigated at low pressures (P < 2x10(-5) mbar). The results are compared with the data on the individual surfaces of Pt and Rh. It is found that the activity of the alloy is intermediate between the activities of the individual metals. The effect of alloy formation on the catalytic activity in CO oxidation is discussed.
引用
收藏
页码:107 / 112
页数:6
相关论文
共 12 条
  • [1] Catalytic CO oxidation over Pt-Rh/gamma-Al2O3 catalysts
    Cai, YP
    Stenger, HG
    Lyman, CE
    [J]. JOURNAL OF CATALYSIS, 1996, 161 (01) : 123 - 131
  • [2] ADSORPTION OF AG, O-2 AND N2O ON AG-RH(100)
    DANIEL, WM
    KIM, Y
    PEEBLES, HC
    WHITE, JM
    [J]. SURFACE SCIENCE, 1981, 111 (02) : 189 - 204
  • [3] Engel T., 1979, ADV CATALYSIS VOLUME, V28, P1, DOI DOI 10.1016/S0360-0564(08)60133-9
  • [4] Chemical waves and adsorbate-induced segregation on a Pt(100) surface microstructured with a thin Rh/Pt film
    Esch, F
    Günther, S
    Schütz, E
    Schaak, A
    Kevrekidis, IG
    Marsi, M
    Kiskinova, M
    Imbihl, R
    [J]. SURFACE SCIENCE, 1999, 443 (03) : 245 - 252
  • [5] EFFECT OF SURFACE-STRUCTURE OF PT ON ITS ELECTRONIC PROPERTIES AND ADSORPTION OF CO, O2, AND H2 - COMPARISON OF PT(100)-(5X20) AND PT(100)-(1X1)
    HELMS, CR
    BONZEL, HP
    KELEMEN, S
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1976, 65 (05) : 1773 - 1782
  • [6] CO oxidation over a Pt-Rh system. 1. Reaction on individual metals
    Kalinkin, AV
    Pashis, AV
    Bukhtiyarov, VI
    [J]. REACTION KINETICS AND CATALYSIS LETTERS, 2002, 77 (02): : 255 - 261
  • [7] NIEUWENHUYS BE, 1993, CHEM PHYSICS SOLID S, V6, P185
  • [8] PLATINUM RHODIUM SYNERGISM IN 3-WAY AUTOMOTIVE CATALYSTS
    OH, SH
    CARPENTER, JE
    [J]. JOURNAL OF CATALYSIS, 1986, 98 (01) : 178 - 190
  • [9] CO+O-2 REACTION ON RH(111) - STEADY-STATE RATES AND ADSORBATE COVERAGES
    SCHWARTZ, SB
    SCHMIDT, LD
    FISHER, GB
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (23) : 6194 - 6200
  • [10] The CO-NO and CO-O-2 reactions studied over Pt-Rh single crystal surfaces under steady state conditions
    Siera, J.
    Rutten, F.
    Nieuwenhuys, B. E.
    [J]. CATALYSIS TODAY, 1991, 10 (03) : 353 - 362