Acidic Character and Catalytic Activity of Sulpho-Functionalized Porous Silica with an Ordered Structure
| Autor: | Akihiko Matsumoto, Fei-Yee Yeoh, Shunsuke Fujihara, Kazuo Tsutsumi, Toshihide Baba |
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| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Adsorption Science & Technology, Vol 24 (2006) |
| Druh dokumentu: | article |
| ISSN: | 0263-6174 2048-4038 |
| DOI: | 10.1260/026361706780154428 |
| Popis: | Microporous organosilica incorporating various amounts of sulpho groups (MS-SO 3 H) was prepared by hydrolysis and the co-condensation of tetramethoxysilane (TMOS) and mercaptopropyl trimethoxysilane (MPTMS), followed by oxidation of the thiol group. The resulting microporous silica had a regular porous structure similar to that of the mesoporous silica MCM-41, as shown by X-ray diffraction and nitrogen adsorption measurements. Ammonia adsorption microcalorimetry indicated that a large number of sulpho groups were successfully incorporated into the microporous silica framework. The sulpho group-incorporating microporous silica (MS-SO 3 H) exhibited catalytic activity towards the isomerization of but-1-ene to cis- and trans -but-2-ene via an acid catalysis mechanism. |
| Databáze: | Directory of Open Access Journals |
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