Zeolite crystallization in crosslinked chitosan hydrogels: Crystal size control and chitosan removal

D. Li; Y. Huang; K.R. Ratinac; S.P. Ringer; H. Wang

doi:10.1016/j.micromeso.2008.04.032

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Zeolite crystallization in crosslinked chitosan hydrogels: Crystal size control and chitosan removal

Journal article

Peer reviewed

Zeolite crystallization in crosslinked chitosan hydrogels: Crystal size control and chitosan removal

D. Li, Y. Huang, K.R. Ratinac, S.P. Ringer and H. Wang

Microporous and Mesoporous Materials, Vol.116(1-3), pp.416-423

2008

DOI: https://doi.org/10.1016/j.micromeso.2008.04.032

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Abstract

For the purpose of controlling zeolite crystal size, crystallization of zeolite NaA and NaY in glutaraldehyde crosslinked chitosan (GA-CS) hydrogels was studied in this paper. The zeolite crystals were produced by penetration of Na2O–Al2O3–H2O alkaline solution into GA-CS hydrogels filled with colloidal silica, followed by hydrothermal treatment and removal of GA-CS hydrogels. We systematically investigated the effects of the synthesis parameters – including the amounts of silica, chitosan, and glutaraldehyde, and the aging and heating times – on the size, size distribution and crystallinity of the particles. A hydrogen peroxide treatment method was shown to be an effective way for removing GA-CS hydrogels, thereby avoiding the conventional calcination step. X-ray diffraction (XRD), light scattering, scanning electron microscopy (SEM), thermogravimetric analysis (TG), and N2 sorption were used to characterize the zeolite samples. This work showed that GA-CS is a promising space-confinement medium for the synthesis of zeolite nanocrystals with tunable crystal sizes and excellent dispersibility.

Details

Title: Zeolite crystallization in crosslinked chitosan hydrogels: Crystal size control and chitosan removal
Authors/Creators: D. Li (Author/Creator)
Y. Huang (Author/Creator)
K.R. Ratinac (Author/Creator)
S.P. Ringer (Author/Creator)
H. Wang (Author/Creator)
Publication Details: Microporous and Mesoporous Materials, Vol.116(1-3), pp.416-423
Publisher: Elsevier
Identifiers: 991005542436307891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.41 Catalysts; 2.41.144 Zeolite Catalysis
Web Of Science research areas: Chemistry, Applied; Chemistry, Physical; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology
ESI research areas: Materials Science