期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 84, 期 3, 页码 549-555出版社
SPRINGER
DOI: 10.1007/s10973-005-9991-3
关键词
DTA; murexide complexes of Fe; Co; Ni; Cu; Zn; Cd; Hg; thermal stability
Iron, cobalt, nickel, copper, zinc, cadmium and mercury murexide complexes have been prepared and characterized. The thermal properties of these complexes are studied deeply by DTA technique where their thermal peaks are explained. The multi-stages thermal decomposition mechanism is proposed. The thermodynamic parameters of the decomposition steps are calculated. The entropy change values for all complexes are of the same magnitude and all transition states of the thermal reactions are more ordered than the reactants. The thermal reactions proceed in complicated mechanisms. The fractions appeared in the calculated orders of the thermal reactions confirmed that these reactions proceeded via complex mechanisms.
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