Thermochemical properties of composites of synthetic zeolite ZSM5 and silver iodide

Thermochemical properties of two kinds of composite material of synthetic zeolite ZSM5 in potassium form (K-ZSM5) with AgI have been studied. The composites have been prepared by treating the silver form of synthetic zeolite ZSM5 (Ag-ZSM5) with potassium iodide solution under different experimental...

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Bibliographic Details
Published in:Journal of Thermal Analysis and Calorimetry 2006-05, Vol.84 (3), p.721-726
Main Authors: CUVANOVA, S, REHAKOVA, M, BASTL, Z, POLLICINO, A, NAGYOVA, S, FAJNOR, V. S
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Ion-exchange
Surface physical chemistry
Zeolites: preparations and properties
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Summary:Thermochemical properties of two kinds of composite material of synthetic zeolite ZSM5 in potassium form (K-ZSM5) with AgI have been studied. The composites have been prepared by treating the silver form of synthetic zeolite ZSM5 (Ag-ZSM5) with potassium iodide solution under different experimental conditions. One of the composites was additionally sintered at temperature 500 deg C for 20 h. Both composites have been characterized by TG, DTG, DTA, EDS analysis, X-ray powder diffractometry and X-ray photoelectron spectroscopy. The methods of thermal analysis as well as X-ray powder diffractometry and XPS confirmed the differences between the two composites caused by sintering during the synthesis. The content of AgI in the surface layer was different. No changes of the zeolitic mineral dimensions are observed.
ISSN:1388-6150
1588-2926
1572-8943
0368-4466
DOI:10.1007/s10973-005-7541-7