Silica- and Alumina-Supported Sulfated Zirconia Catalysts for Hexane Isomerization: Effect of the Support Nature

被引：1

作者：

Smolikov, M. D. ^{[1
]}

Bikmetova, L. I. ^{[1
]}

Kazantsev, K. V. ^{[1
]}

Skurenok, V. A. ^{[1
]}

Yablokova, S. S. ^{[1
]}

Lavrenov, A. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Ctr New Chem Technol BIC, Boreskov Inst Catalysis, Siberian Branch, Omsk 644040, Russia

来源：

CATALYSIS IN INDUSTRY | 2023年 / 15卷 / 04期

关键词：

isomerization; hexane; sulfated zirconia; silica; alumina; supported catalyst;

D O I：

10.1134/S2070050423040116

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of the support nature on the hexane isomerization reaction parameters for SiO2- and Al2O3-supported sulfated zirconia catalysts with different textural characteristics has been studied. It has been shown that a higher hexane conversion is achieved in the presence of sulfated zirconia catalysts supported on aluminas. Using IR spectroscopy of adsorbed CO, it has been found that, in the Al2O3-supported catalysts, the concentration of Bronsted acid sites (BAS) characterized by adsorbed CO with an absorption band at 2170 cm(-1) and strong Lewis acid sites (LAS) characterized by adsorbed CO with absorption bands at 2210 and 2224 cm(-1) is higher than that in the SiO2-supported catalysts. In the Al2O3-supported catalysts with different textural characteristics, an increase in the contribution of LAS to the total acidity leads to a significant increase in the high-octane 2,2-dimethylbutane yield and the hexane isomerization depth.

引用

页码：350 / 356

页数：7

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