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
收藏
页码：350 / 356
页数：7
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