Hierarchical pore ZSM-5 zeolite structures: From micro- to macro-engineering of structured catalysts

Zeolite crystals coated on mesoporous glass materials with hierarchical tri-modal pore size distributions have been successfully prepared and characterized. Starting glass monoliths, having regular meso- and macro-pores, were partly re-constructed into zeolite material, thus introducing additional m...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering journal (1996) 2010-07, Vol.161 (3), p.397-402
Main Authors: Louis, B., Ocampo, F., Yun, H.S., Tessonnier, J.P., Pereira, M. Maciel
Format: Article
Language:English
Subjects:
Applied sciences
Catalysis
Catalysts
Catalytic reactions
Chemical engineering
Chemistry
Crystals
Exact sciences and technology
General and physical chemistry
Glass
Hierarchical porosity
Materials selection
Mesoporous zeolite
n-Hexane cracking
Porosity
Reactors
Self assembly
Structured catalyst
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Zeolites
ZSM-5 zeolite
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Zeolite crystals coated on mesoporous glass materials with hierarchical tri-modal pore size distributions have been successfully prepared and characterized. Starting glass monoliths, having regular meso- and macro-pores, were partly re-constructed into zeolite material, thus introducing additional microporosity via the growth of these zeolite crystals. Hierarchical 3D porous glass scaffolds were prepared by a combination of sol–gel, double polymer templating, and rapid prototyping (RP) techniques. Structured zeolitic catalytic materials were produced by conventional self-assembly of template cations and silica species on the glass surface. Zeolite crystals are therefore in an intimate contact with the glass support, featuring micropores in addition to the mesopores. A higher catalytic performance and selectivity toward low alkenes were achieved in n-hexane cracking reaction over these zeolite/glass composites in comparison with purely microporous zeolite materials.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2009.09.041