Structure and reactivity of silica-supported 12-tungstophosphoric acid

被引：88
|
作者：
Kuang, WX [1 ]
Rives, A [1 ]
Fournier, M [1 ]
Hubaut, R [1 ]
机构：
[1] Univ Sci & Technol Lille, Catalyse Heterogene & Homogene Lab, UPRESA 8010, F-59655 Villeneuve Dascq, France
来源：
APPLIED CATALYSIS A-GENERAL | 2003年 / 250卷 / 02期
关键词：
silica-supported 12-tungstophosphoric acid; structure; reactivity; isomerization of n-hexane;
D O I：
10.1016/S0926-860X(03)00239-4
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 structure and reactivity of silica-supported 12-tungstophosphoric acid (HPW) with 10-60 wt.% loading prepared by the impregnation method are studied by using chemical analysis, X-ray diffraction (XRD), FT-IR, FT-Raman, TG, P-31 MAS NMR, surface area measurement and microreactor tests. It is found that most of HPW in samples is well dispersed on the support, and may mainly exist as small crystalline particles with an average size around 24.3-27.6 nm, calculated by XRD results. Based on various characterization techniques, it may be concluded that silica-supported HPW still keeps its Keggin structure. The effect of different loading on the reactivity of silica-supported HPW without promoter or promoted by Pt/Al2O3 is studied by using isomerization of n-hexane as a probe reaction, and the reactivity is found to be strongly loading related. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：221 / 229
页数：9
相关论文
共 50 条
  • [21] Application of Cs salt of 12-tungstophosphoric acid supported on SBA-15 mesoporous silica in NOx storage
    M. V. Landau
    P. M. Rao
    S. Thomas
    V. Pitchon
    R. Zukerman
    L. Vradman
    M. Herskowitz
    [J]. Topics in Catalysis, 2007, 42-43 : 203 - 207
  • [22] Application of Cs salt of 12-tungstophosphoric acid supported on SBA-15 mesoporous silica in NOx storage
    Landau, M. V.
    Rao, P. M.
    Thomas, S.
    Pitchon, V.
    Zukerman, R.
    Vradman, L.
    Herskowitz, M.
    [J]. TOPICS IN CATALYSIS, 2007, 42-43 (1-4) : 203 - 207
  • [23] Preparation and properties of zirconia nanotube-supported 12-tungstophosphoric acid catalyst
    Xixin Wang
    Changyun Lu
    Liyuan Gong
    Hongli Hu
    Xiaojing Yang
    Jianling Zhao
    [J]. Chinese Chemical Letters, 2018, 29 (02) : 317 - 320
  • [24] CONJUGATED POLYMER-SUPPORTED CATALYSTS - POLYANILINE PROTONATED WITH 12-TUNGSTOPHOSPHORIC ACID
    HASIK, M
    TUREK, W
    STOCHMAL, E
    LAPKOWSKI, M
    PRON, A
    [J]. JOURNAL OF CATALYSIS, 1994, 147 (02) : 544 - 551
  • [25] Esterification of oleic acid using 12-tungstophosphoric supported in flint kaolin of the Amazonia
    Lacerda Junior, Orivaldo da Silva
    Cavalcanti, Rodrigo Marinho
    de Matos, Thaisa Moreira
    Angelica, Romulo Simoes
    da Rocha Filho, Geraldo Narciso
    Lopes Barros, Ivoneide de Carvalho
    [J]. FUEL, 2013, 108 : 604 - 611
  • [26] In situ IR and temperature programmed desorption mass spectrometry study of NO absorption and decomposition by silica supported 12-tungstophosphoric acid
    McCormick, RL
    Boonrueng, SK
    Herring, AM
    [J]. CATALYSIS TODAY, 1998, 42 (1-2) : 145 - 157
  • [27] Characterization of potassium salts of 12-tungstophosphoric acid
    Holclajtner-Antunovic, I.
    Mioc, U. B.
    Todorovic, M.
    Jovanovic, Z.
    Davidovic, M.
    Bajuk-Bogdanovic, D.
    Lausevic, Z.
    [J]. MATERIALS RESEARCH BULLETIN, 2010, 45 (11) : 1679 - 1684
  • [28] INTERACTION OF NO AND NO2 ON 12-TUNGSTOPHOSPHORIC ACID
    BELANGER, R
    MOFFAT, JB
    [J]. CATALYSIS LETTERS, 1995, 32 (3-4) : 371 - 378
  • [29] Intramolecular cyclization of (+)-citronellal using supported 12-tungstophosphoric acid on MCM-41
    Braga, Patricia R. S.
    Costa, Andreia A.
    de Freitas, Elon F.
    Rocha, Rafael O.
    de Macedo, Julio L.
    Araujo, Antonio S.
    Dias, Jose A.
    Dias, Silvia C. L.
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2012, 358 : 99 - 105
  • [30] STRUCTURE AND REACTIVITY OF SILICA-SUPPORTED VANADIUM-OXIDE
    OYAMA, ST
    [J]. RESEARCH ON CHEMICAL INTERMEDIATES, 1991, 15 (02) : 165 - 182
12345