Heteropolyacid catalysts for hydroisomerization of n-hexane:: Effects of alkali salt modification

被引：33
|
作者：
Essayem, N [1 ]
Ben Taârit, Y [1 ]
Gayraud, PY [1 ]
Sapaly, G [1 ]
Naccache, C [1 ]
机构：
[1] CNRS, Inst Rech Catalyse, Convent UCB Lyon, F-69622 Villeurbanne, France
来源：
JOURNAL OF CATALYSIS | 2001年 / 204卷 / 01期
关键词：
hydroisomerization; acidity; heteropolyacids; alkanes; n-hexane;
D O I：
10.1006/jcat.2001.3341
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：
12-Tungstophosphoric acid, H3PW12O40, and a series of its acid alkali salts associated with silica-supported platinum have been used as catalysts in the hydroisomerization of n-hexane and compared with platinum-supported, appropriately dealuminated mordenite. High selectivity toward isomerization was observed with both the heteropolyacid (HPA)-type catalysts and the mordenite at elevated conversions. The acid sites of the heteropolyacids/salts exhibited an efficiency higher than that of mordenite, in line with the higher acid strength of the former sites. Yet, despite their higher acid strength, heteropolyacids/salts showed a lower selectivity toward dimethylbutanes than mordenite. In addition, heteropolyacids, though more active than mordenite at low temperature, appeared to be only poor monofunctional isomerization catalysts. (C) 2001 Academic Press.
引用
收藏
页码：157 / 162
页数：6
相关论文
共 50 条
  • [1] Features of the distribution of aluminum in mordeniteclinoptilolite catalysts for the hydroisomerization of n-hexane
    Bobonich F.M.
    Solomakha V.N.
    Bobik V.V.
    Theoretical and Experimental Chemistry, 2002, 38 (5) : 330 - 334
  • [2] Hydroisomerization of n-hexane over Pt/TiO2 catalysts
    Al-Naib, Sara A.
    Al-Jendeel, Haider A.
    CHEMICAL PAPERS, 2024, 78 (17) : 9069 - 9076
  • [3] Microkinetics modeling of the hydroisomerization of n-hexane
    vandeRunstraat, A
    vanGrondelle, J
    vanSanten, RA
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (08) : 3116 - 3125
  • [4] Catalytic behavior of alkali-treated Pt/HMOR in n-hexane hydroisomerization
    Monteiro, R.
    Ania, C. O.
    Rocha, J.
    Carvalho, A. P.
    Martins, A.
    APPLIED CATALYSIS A-GENERAL, 2014, 476 : 148 - 157
  • [5] Analysis and Modeling of the Hydroisomerization Process for n-Hexane
    Pisarenko, E. V.
    Ponomarev, A. B.
    Pisarenko, V. N.
    THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING, 2018, 52 (01) : 24 - 34
  • [6] Preparation of mesoporous mordenite for the hydroisomerization of n-hexane
    Lu, Xinqing
    Guo, Yuping
    Xu, Chunhui
    Ma, Rui
    Wang, Xue
    Wang, Ningwei
    Fu, Yanghe
    Zhu, Weidong
    CATALYSIS COMMUNICATIONS, 2019, 125 : 21 - 25
  • [7] Analysis and Modeling of the Hydroisomerization Process for n-Hexane
    E. V. Pisarenko
    A. B. Ponomarev
    V. N. Pisarenko
    Theoretical Foundations of Chemical Engineering, 2018, 52 : 24 - 34
  • [8] n-Hexane Hydroisomerization Over Composite Catalysts Based on BEA Zeolite and Mesoporous Materials
    Paixao, V.
    Santos, C.
    Nunes, R.
    Silva, J. M.
    Pires, J.
    Carvalho, A. P.
    Martins, A.
    CATALYSIS LETTERS, 2009, 129 (3-4) : 331 - 335
  • [9] Hydroisomerization of n-hexane over platinum mazzite and platinum mordenite catalysts - Kinetics and mechanism
    Allain, JF
    Magnoux, P
    Schulz, P
    Guisnet, M
    APPLIED CATALYSIS A-GENERAL, 1997, 152 (02) : 221 - 235
  • [10] Hydroisomerization of n-hexane over platinum mazzite and platinum mordenite catalysts kinetics and mechanism
    URA CNRS 350, Catalyse en Chimie Organique, Université de Poitiers, 40, avenue du Recteur Pineau, F-86022 Poitiers Cedex, France
    不详
    Appl Catal A Gen, 2 (221-235):
12345