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Thermal decomposition and thermofracto-chromatographic studies of metal citrates

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Abstract

The thermal decomposition and kinetic parameters of thermal decomposition of Mg(II), Ca(II), Al(III), Cr(III), Fe(III), Co(II), Ni(II), Zn(II), Mn(II) and Cd(II) complex salts with citric acid were investigated on the basis of the respective thermal curves. The values of the activation energy (E a) and reaction order (n) of the thermal decomposition were compared. Thermofractochromatograph constructed in our laboratory complies with the requirements of apparatus for separation, evolution and identification of products formed during the heating of the investigated samples in the temperature range of 293 to 600 K.

Zusammenfassung

Die thermische Zersetzung von Komplexsalzen von Mg(II), Ca(II), Al(III), Cr(III), Fe(III), Co(II), Ni(II), Zn(II), Mn(II) und Cd(II) mit CitronensÄure wurde untersucht. Die kinetischen Parameter der einzelnen Zersetzungsreaktionen wurden durch Analyse der betreffenden thermischen Kurven ermittelt und die Aktivierungsenergien (E a) und Reaktionsordnungen (n) verglichen. Ein im Laboratorium der Autoren konstruierter Thermofractochromatograph wird den Anforderungen an eine Apparatur zur Trennung, Freisetzung und Identifizierung der beim Erhitzen der untersuchten Verbindungen im Temperaturbereich von 293–600 K gebildeten Produkte gerecht.

РЕжУМЕ

ОБсУжДЕНы пРАктИЧЕс кИЕ АспЕкты ИжУЧЕНИь стАДИИ тЕРМИЧЕскОИ Д ИссОцИАцИИ тВЕРДых тЕл, кИНЕтИкИ РЕАкцИОННых стАДИИ И пРИМЕНЕНИЕ ОБЩИх РЕгУльРНОстЕИ пРОцЕссА Дль пРОВЕРкИ кИНЕтИЧ ЕскИх ИсслЕДОВАНИИ.

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Authors and Affiliations

  1. Institute of general food chemistry, Technical university łódź, Poland

    J. Masłowska

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  1. J. Masłowska
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Additional information

The author thanks Mr. M. Bielawski for his technical assistance.

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Masłowska, J. Thermal decomposition and thermofracto-chromatographic studies of metal citrates. Journal of Thermal Analysis 29, 895–904 (1984). https://doi.org/10.1007/BF02188835

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  • DOI: https://doi.org/10.1007/BF02188835

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