The structural effect of CeO2 and La2O3 modified Pd/γAl2O3 catalysts

被引：2
|
作者：
Yang, C
Dong, QN
Zhang, J
Ren, J
Sun, YH [1 ]
Xie, YN
Hu, TD
机构：
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, State Key Lab Synchrotron Radiat, Beijing 100039, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2002年 / 18卷 / 02期
关键词：
La2O3; CeO2; supported Pd; structure effect; methanol decomposition;
D O I：
10.3866/PKU.WHXB20020216
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 series of Pd/gamma-Al2O3 catalysts modified by CeO2 and La2O3 were prepared by impregnation method with different La2O3, CeO2 dope manners. Methanol decomposition was used as a probe reaction. The structure of the catalysts was characterized by means of BET, XRD, XPS and FTIR. The results showed that a La2O3-CeO2 solid solution was facile to form by La3+ dissolution into CeO2 lattice. The dimension of CeO2 particles decreased, while the dispersion and crystal plane of Pd and the Pd-CeO2 interaction varied with La2O3, CeO2 dope manners. High dispersion of Pd and a strong interaction between Pd and CeO2 were observed on a La2O3 and CeO2 modified Pd/Al2O3 catalyst with La2O3-CeO2 successive dope manner, which resulted in high activity for methanol decomposition.
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收藏
页码：170 / 174
页数：5
相关论文
共 19 条
  • [1] BADRI A, 1995, J CHIM PHYS PHYS CHI, V92, P13
  • [2] BOUJANA S, 1990, CATAL LETT, V7, P359
  • [3] SPECTROSCOPIC STUDIES OF METHANOL DECOMPOSITION ON PD(111)
    CHEN, JJ
    JIANG, ZC
    ZHOU, Y
    CHAKRABORTY, BR
    WINOGRAD, N
    [J]. SURFACE SCIENCE, 1995, 328 (03) : 248 - 262
  • [4] Heat of adsorption of carbon monoxide on various Pd-containing solids using in situ infrared spectroscopy at high temperatures
    Dulaurent, O
    Chandes, K
    Bouly, C
    Bianchi, D
    [J]. JOURNAL OF CATALYSIS, 2000, 192 (02) : 273 - 285
  • [5] INVESTIGATION OF LA-3+-MODIFIED AL2O3-SUPPORTED CEO2
    GRAHAM, GW
    SCHMITZ, PJ
    USMEN, RK
    MCCABE, RW
    [J]. CATALYSIS LETTERS, 1993, 17 (1-2) : 175 - 184
  • [6] DYNAMIC BEHAVIOR OF AUTOMOTIVE CATALYSTS .3. TRANSIENT ENHANCEMENT OF WATER-GAS SHIFT OVER RHODIUM
    HERZ, RK
    SELL, JA
    [J]. JOURNAL OF CATALYSIS, 1985, 94 (01) : 166 - 174
  • [7] Huang YF, 1995, STUD SURF SCI CATAL, V96, P431
  • [8] ENHANCED OXYGEN STORAGE CAPACITY OF CERIUM OXIDES IN CEO2/LA2O3/AL2O3 CONTAINING PRECIOUS METALS
    MIKI, T
    OGAWA, T
    HANEDA, M
    KAKUTA, N
    UENO, A
    TATEISHI, S
    MATSUURA, S
    SATO, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16): : 6464 - 6467
  • [9] EFFECTS OF CERIUM ADDITION ON THE CO NO REACTION-KINETICS OVER ALUMINA-SUPPORTED RHODIUM CATALYSTS
    OH, SH
    [J]. JOURNAL OF CATALYSIS, 1990, 124 (02) : 477 - 487
  • [10] RIECK JS, 1979, J CATAL, V58, P131
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