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Solid-state synthesis of mesoporous MFI zeolite from self-bonded silica pellets

Paper ID Volume ID Publish Year Pages File Format Full-Text
54887 47030 2013 8 PDF Available
Title
Solid-state synthesis of mesoporous MFI zeolite from self-bonded silica pellets
Abstract

A comprehensive study on crystallization of silica powder and self-bonded silica pellets by solid-state transformation has been made. In particular, crystallization of MFI zeolite precursors under steaming (vapor phase) and boiling (liquid) mode during the transformation process have been examined. It is found that, while hierarchical MFI zeolites containing micro- and mesoporosites may readily be obtained via these synthesis routes, the crystallinity, morphology and mesoporosity of the zeolite products depend not only on the form of silica source (powder vs. pallet), but also on the crystallization phase (liquid vs. vapor phase) invoked during the transformation process. Among them, mesoporous MFI zeolites prepared from self-bonded silica pellets by vapor phase steam-assisted crystallization method show the desirable textural and adsorptive properties rendering for specified applications of zeolites with hierarchical pore structures.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (267 K)Download as PowerPoint slideHighlights► Non-mesoporogen synthesis of mesoporous MFI from monolithic silica. ► Steam assisted conversion method in “steaming” and “boiling” mode. ► Morphology ranging from 700 nm spheres to 10 μm longitudinal rectangles. ► Enhanced hexane sorption capacity with reduced desorption temperature.

Keywords
Steam-assisted crystallization; Dry-gel-conversion; Monolithic silica; Mesoporous zeolite; Adsorption; Diffusion
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Solid-state synthesis of mesoporous MFI zeolite from self-bonded silica pellets
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 204, 15 April 2013, Pages 30–37
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