Skeletal isomerization of n-heptane and hydroisomerization of benzene over bifunctional heteropoly compounds

被引：42
|
作者：
Miyaji, A [1 ]
Okuhara, T [1 ]
机构：
[1] Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan
来源：
CATALYSIS TODAY | 2003年 / 81卷 / 01期
关键词：
heteropoly compound; solid acid; skeletal isomerization; cyclohexane; benzene; n-heptane; bifunctional catalyst;
D O I：
10.1016/S0920-5861(03)00100-7
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Hydroisomerization of benzene and skeletal isomerization of n-heptane have been studied using various 2 wt.% Pt-promoted solid acids such as Pt-Cs2.5H0.5PW12O40 (Pt-Cs-2.5), SiO2 supported Pt-Cs2.5H0.5PW12O40 (Pt-Cs-2.5/SiO2), Pt-SO42-/ZrO2 Pt-WO3/ZrO2, and Pt-H-beta zeolite. The catalytic activity for the formation of methylcyclopentane in the hydroisomerization of benzene was in order of Pt-Cs-2.5/SiO2 > Pt-Cs-2.5 > Pt-WO3/ZrO2 > Pt-SO42-/ZrO2. The highest activity of Pt-Cs-2.5/SiO2 among these bifunctional catalysts would be due to high ability for hydrogenation of benzene and high activity for skeletal isomerization of cyclohexane. In the skeletal isomerization of n-heptane, it was found that Pt-Cs-2.5/SiO2 was more selective than Pt-H-beta zeolite, which is known to be the most efficient catalyst for this reaction, though it was less active than Pt-H-beta zeolite. (C) 2003 Elsevier Science B.V. All rights reserved.
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页码：43 / 49
页数：7
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