A novel method to anchor methanesulfonic acid in silica matrix
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- 作者：Naiwang Liu ; Jiajia Yao ; Li Shi
- 关键词：methanesulfonic acid ; olefin removal ; solid acid catalyst ; alkylation
- 刊名：SCIENCE CHINA Chemistry
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：59
- 期：3
- 页码：370-379
- 全文大小：1,811 KB
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- 作者单位：Naiwang Liu (1) <br> Jiajia Yao (1) <br> Li Shi (1) <br><br>1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China <br>
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry<br>Chinese Library of Science<br>Chemistry<br>
- 出版者：Science China Press, co-published with Springer
- ISSN：1869-1870
文摘
Methanesulfonic acid (MSA) was successfully immobilized in silica, leading to a novel and environmentally friendly solid acid catalyst SMSA. The most important feature of SMSA is that anhydrous formic acid is used to hydrolysis of tetraethylorthosilicate (TEOS). No water was added in the whole preparation. Therefore, MSA could be anchored in silica matrix more effectively instead of being dissolved in water. This new organic/inorganic hybrid catalyst was characterized by powder X-ray diffraction (XRD), energy dispersive spectrum (EDS), N2 adsorption-desorption analyzer, thermogravimetric analysis (TGA-DSC) and pyridine-FTIR. The catalytic activity was tested by alkylation of olefins and aromatics. High concentration acid sites, both Lewis and Brønsted, abundant porosity and large surface area enabled the highest activity for SMSA, among MCM-22, ZSM-5 and industrial acidity clay.