期刊
CATALYSIS TODAY
卷 235, 期 -, 页码 169-175出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2014.02.035
关键词
Interlayer expansion reaction; Functionalized micropores; Sulfonic acid; Tetrahydropyranylation; Shape selectivity; Organic-inorganic hybrid
资金
- F.W.O. - Vlaanderen (Research Foundation - Flanders)
- BASF SE under the INCOE
Interlayer expansion of layered zeolite precursors is achieved via the insertion of an additional T-atom in between the layers, typically by means of a silylating agent as source of the T-atom. (3-Mercaptopropyl)methyldimethoxysilane was used as Si-source in the interlayer expansion of the layered zeolite precursors RUB-36 and RUB-39. The structure expansion was confirmed with PXRD. The incorporation of the silylating agent was followed with Si-29 MAS NMR, C-13 CP MAS NMR and thermogravimetric analysis. The incorporated thiol groups were oxidized with H2O2 to obtain sulfonic acid groups in between the layers. C-13 CP MAS NMR was used to characterize the organic species and monitor the conversion of thiol to propylsulfonic groups. The shape-selective properties of the obtained materials were investigated in acid-catalyzed tetrahydropyranylation reactions. (C) 2014 Elsevier B.V. All rights reserved.
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