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Solid-state transformation of hollow silica microspheres into hierarchical ZSM-5 having tunable mesopores

Paper ID Volume ID Publish Year Pages File Format Full-Text
51058 46828 2010 5 PDF Available
Title
Solid-state transformation of hollow silica microspheres into hierarchical ZSM-5 having tunable mesopores
Abstract

Mesoporous hierarchical ZSM-5 zeolites have been prepared via direct solid-state transformation of hollow silica gel microspheres without changing their spherical geometry. A two-stage hydrothermal method was used where tetrapropylammonium (TPA+) directed the formation of the MFI subunits in the first stage. In the second stage these subunits aggregated around the self-assembled cetyltrimethylammonium micelles and then crystallized by TPA+ templation. The mesoporous structure proved to be tunable in the pore size range of 3.2–4.8 nm by the addition of swelling agent 1,3,5-trimethylbenzene. Catalytic propene oligomerization showed less coke formed over mesoporous than microporous ZSM-5 catalysts.

Keywords
Silica microsphere; ZSM-5 zeolite; Synthesis; Mesoporous; Hierarchical
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Solid-state transformation of hollow silica microspheres into hierarchical ZSM-5 having tunable mesopores
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 8, 31 March 2010, Pages 700–704
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
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Any Questions? feel free to contact us