Gas phase oligomerization of isobutene over acid treated kaolinite clay catalyst

被引：5

作者：

Aldhayan D. ^{[1
]}

Aouissi A. ^{[1
]}

机构：

[1] Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh

来源：

Bulletin of Chemical Reaction Engineering and Catalysis | 2017年 / 12卷 / 01期

关键词：

Clay catalyst; Clean gasoline; Isobutene; Oligomerization; Solid acid catalyst;

D O I：

10.9767/bcrec.12.1.758.119-126

中图分类号：

学科分类号：

摘要：

Natural Kaolin Clay was calcined and treated by sulfuric acid. The resulting solid acid catalyst was characterized by FTIR, TGA, and X-ray powder diffraction (XRD) and tested for isobutene oligomerization in a gas phase. The characterization results showed that the acid treated clay underwent chemical and structural transformations. After acid treatment, the Si/Al ratio was increased, and the crystalline raw clay became amorphous. The effects of various parameters such as reaction temperature, reaction time and contact time on isobutene oligomerization were investigated. Catalytic tests showed that isobutene oligomerization led to dimers and trimers as major products. Tetramers were obtained as byproducts. At relatively high reaction temperatures and long contact times, the conversion was enhanced while the selectivity of dimers was decreased in favor of higher oligomers. Copyright © 2017 BCREC GROUP. All rights reserved.

引用

页码：119 / 126

页数：7

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