Adhered zeolite preparation on and within a muscovite mica by hydrothermal growth

Zeolites and other open framework materials provide a powerful tool for remediation and solidification of a range of cationic wastes (e.g. NH4+, Pb2+) due to the combined properties of large surface area and cation exchange capacity. However, practical barriers exist to the continued expansion of th...

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Bibliographic Details
Published in:Clays and clay minerals 2006-12, Vol.54 (6), p.678-688
Main Authors: Johnson, Christopher D, Mallon, Anthony J, Worrall, Fred
Format: Article
Language:English
Subjects:
Adsorption
Cation
cation exchange capacity
chemical properties
chemical reactions
crystal chemistry
crystallization
Earth sciences
Earth, ocean, space
Exact sciences and technology
experimental studies
framework silicates
hydrothermal conditions
Ion Exchange
mica group
Mineralogy
Muscovite
sample preparation
sheet silicates
Silicates
surface properties
Waste
X-ray diffraction data
Zeolite
zeolite group
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Summary:Zeolites and other open framework materials provide a powerful tool for remediation and solidification of a range of cationic wastes (e.g. NH4+, Pb2+) due to the combined properties of large surface area and cation exchange capacity. However, practical barriers exist to the continued expansion of their use, including handling issues related to the fine particle size, and continued ion exchange following waste adsorption. This study examines the synthesis and characterization of zeolites adhered to a muscovite mica wafer, in order to assess if practical benefit can be derived from the preparation of layered composite materials. The paper demonstrates that increased metal adsorption, as demonstrated by surface chemical composition, can be induced in regions by growth of zeolite on and within the lamellar structure of the matrix. X-ray diffraction studies suggest that a site-specific crystallization mechanism controls the zeolite type and extent of growth, thereby reducing control over the zeolites prepared. However, although increased adsorption has been introduced to the mica, the amount of zeolite added is small (
ISSN:0009-8604
1552-8367
DOI:10.1346/CCMN.2006.0540603