Hydroxyapatite as a novel support for gold and ruthenium catalysts - Behaviour in the water gas shift reaction

被引：136
作者：
Venugopal, A [1 ]
Scurrell, MS [1 ]
机构：
[1] Univ Witwatersrand, Sch Chem, Inst Mol Sci, ZA-2050 Johannesburg, Johannesburg, South Africa
来源：
APPLIED CATALYSIS A-GENERAL | 2003年 / 245卷 / 01期
关键词：
hydroxyapatite; gold; ruthenium; water gas shift;
D O I：
10.1016/S0926-860X(02)00647-6
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：
Novel catalysts comprising gold or ruthenium supported on hydroxyapatite are prepared by a deposition-precipitation method and examined for their behaviour in the water gas shift reaction at various reaction temperatures and at atmospheric pressure. The physicochemical properties of the catalysts were characterized using BET-surface area (BET-SA), XRD, TPR, TPD of NH3 and CO2. High WGS activities were observed over Au/HAP compared with Ru/HAP catalyst. The Ru/HAP catalyst showed methanation activity at temperatures above 300 degreesC, caused by a tendency for the dissociative chemisorption of CO to occur, though this process can be suppressed to some extent by an increase in the partial pressure of water under reaction conditions. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：137 / 147
页数：11
相关论文
共 25 条
  • [1] Au/α-Fe2O3 catalyst for water-gas shift reaction prepared by deposition-precipitation
    Andreeva, D
    Tabakova, T
    Idakiev, V
    Christov, P
    Giovanoli, R
    [J]. APPLIED CATALYSIS A-GENERAL, 1998, 169 (01) : 9 - 14
  • [2] FTIR study of the low-temperature water-gas shift reaction on Au/Fe2O3 and Au/TiO2 catalysts
    Boccuzzi, F
    Chiorino, A
    Manzoli, M
    Andreeva, D
    Tabakova, T
    [J]. JOURNAL OF CATALYSIS, 1999, 188 (01) : 176 - 185
  • [3] Studies of the water-gas-shift reaction on ceria-supported Pt, Pd, and Rh: implications for oxygen-storage properties
    Bunluesin, T
    Gorte, RJ
    Graham, GW
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 15 (1-2) : 107 - 114
  • [4] de Souza TRO, 1999, APPL CATAL A-GEN, V178, P7
  • [5] Reaction of carbon monoxide with water on supported iridium catalysts
    Erdohelyi, A
    Fodor, K
    Suru, G
    [J]. APPLIED CATALYSIS A-GENERAL, 1996, 139 (1-2) : 131 - 147
  • [6] ACTIVITY AND STRUCTURE-SENSITIVITY OF THE WATER-GAS SHIFT REACTION OVER CU-ZN-AL MIXED-OXIDE CATALYSTS
    GINES, MJL
    AMADEO, N
    LABORDE, M
    APESTEGUIA, CR
    [J]. APPLIED CATALYSIS A-GENERAL, 1995, 131 (02) : 283 - 296
  • [7] SECONDARY REACTIONS ON METAL ZEOLITE CATALYSTS USED IN SYNTHESIS GAS CONVERSION
    GORMLEY, RJ
    RAO, VUS
    ANDERSON, RR
    SCHEHL, RR
    CHI, RDH
    [J]. JOURNAL OF CATALYSIS, 1988, 113 (01) : 193 - 205
  • [8] Mechanism of gold activation in supported gold catalysts for CO oxidation
    Hao, ZP
    An, LD
    Wang, HL
    Hu, TD
    [J]. REACTION KINETICS AND CATALYSIS LETTERS, 2000, 70 (01): : 153 - 160
  • [9] LOW-TEMPERATURE OXIDATION OF CO OVER GOLD SUPPORTED ON TIO2, ALPHA-FE2O3, AND CO3O4
    HARUTA, M
    TSUBOTA, S
    KOBAYASHI, T
    KAGEYAMA, H
    GENET, MJ
    DELMON, B
    [J]. JOURNAL OF CATALYSIS, 1993, 144 (01) : 175 - 192
  • [10] PENTACALCIUM MONOHYDROXYORTHOPHOSPHATE
    HAYEK, E
    [J]. INORGANIC SYNTHESES, 1963, 7 : 63 - 65
123