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Mesopore wall-catalyzed Friedel–Crafts acylation of bulky aromatic compounds in MFI zeolite nanosponge

Paper ID Volume ID Publish Year Pages File Format Full-Text
54362 47007 2015 6 PDF Available
Title
Mesopore wall-catalyzed Friedel–Crafts acylation of bulky aromatic compounds in MFI zeolite nanosponge
Abstract

•A mesoporous MFI nanosponge was synthesized by seed-assisted hydrothermal synthesis method.•The MFI nanosponge shows high catalytic activity and high regenerability in FC acylation reaction.•The high catalytic activity can be explained by large amount of Brönsted acid sites existing on mesopore wall of the MFI nanosponge.

We investigated the effects of mesopore generation in a MFI zeolite when used as a catalyst in liquid-phase Friedel–Crafts acylation reactions of bulky aromatic compounds. For this investigation, we obtained an MFI zeolite with nanosponge morphology, following a seed-assisted hydrothermal synthesis route using C22H45–N+(CH3)2–C6H12–N+(CH3)2–C6H13. The zeolite nanosponge exhibited a narrow distribution of mesopore diameters centered at 4 nm, in which the mesopores were built with a disordered network of 2.5-nm thick MFI zeolite layers. This zeolite exhibited high catalytic performance in various acylation reactions, compared with bulk MFI zeolites, beta zeolite and mesoporous materials composed of amorphous aluminosilicates. The high catalytic performance corresponded to the strong Brönsted acid sites existing on the mesopore walls.

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Keywords
Nanomorphic zeolite; Hierarchical zeolite; Zeolite external acidity; Friedel–Crafts acylation; Mesoporous material
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Mesopore wall-catalyzed Friedel–Crafts acylation of bulky aromatic compounds in MFI zeolite nanosponge
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 243, 1 April 2015, Pages 103–108
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