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Shape-selective organic–inorganic zeolitic catalysts prepared via interlayer expansion

Paper ID Volume ID Publish Year Pages File Format Full-Text
54689 47020 2014 7 PDF Available
Title
Shape-selective organic–inorganic zeolitic catalysts prepared via interlayer expansion
Abstract

•Layered zeolite precursors RUB-36 and RUB-39 were interlayer expanded.•Sulfonic acid groups were introduced in between the layers.•The catalysts showed shape-selective properties in tetrahydropyranylation reactions.

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 29Si MAS NMR, 13C CP MAS NMR and thermogravimetric analysis. The incorporated thiol groups were oxidized with H2O2 to obtain sulfonic acid groups in between the layers. 13C 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.

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Keywords
Interlayer expansion reaction; Functionalized micropores; Sulfonic acid; Tetrahydropyranylation; Shape selectivity; Organic–inorganic hybrid
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Shape-selective organic–inorganic zeolitic catalysts prepared via interlayer expansion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 235, 15 October 2014, Pages 169–175
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us