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Thermal Decomposition of Aluminium Chloride Hexahydrate
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SYSNO ASEP 0028622 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Thermal Decomposition of Aluminium Chloride Hexahydrate Title Tepelný rozklad AlCl3.6H2O Author(s) Hartman, Miloslav (UCHP-M) RID, ORCID, SAI
Trnka, Otakar (UCHP-M)
Šolcová, Olga (UCHP-M) RID, ORCID, SAISource Title Industrial and Engineering Chemistry Research. - : American Chemical Society - ISSN 0888-5885
Roč. 44, č. 17 (2005), s. 6591-6598Number of pages 8 s. Language eng - English Country US - United States Keywords aluminum chloride hexahydrate ; thermal decomposition ; reaction kinetics Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA203/02/0002 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) Annotation The decomposition rate of aluminum chloride hexahydrate (AlCl3.6H2O) was measured as weight loss at ambient pressure and elevated temperatures up to 270oC. Such incomplete, thermal decomposition produces a porous and reactive basic aluminum chloride [Al2O3.2HCl.2H2O or Al2(OH)4Cl2.H2O] which dissolves in water to give poly(aluminum chloride) used as an efficient flocculation agent. A slowly rising-temperature method and very small sample masses, which minimize heat and mass transfer intrusions, were employed to determine intrinsic reaction rates. A fractional order kinetic equation of Arrhenius type was proposed for the decomposition and tested also against the results amassed by experiment in a constant temperature mode. This correlation allows the estimation of the reaction rate as a function of temperature and the extent of decomposition. It can readily be employed in modeling and simulation of the decomposition process. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2006
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