Kinetics of thermolysis of some transition metal perchlorate complexes with 1,6-diaminohexane ligandPart 50

Three transition metal perchlorate complexes of general formula [M(dah)2)](ClO4)2 (where M = Zn, Cu, and Ni; dah = 1,6-diaminohexane) have been prepared, and characterized by elemental analysis, infrared spectroscopy (IR), and gravimetric method. The thermal decomposition has been studied by thermog...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2011-01, Vol.103 (1), p.149-155
Main Authors: Singh, Gurdip, Shrimal, A K, Kapoor, Inder Pal Singh, Singh, Chandra Prakash, Kumar, Dinesh, Manan, S Mudi
Format: Article
Language:English
Subjects:
Calorimetry
Delay
Differential scanning calorimetry
Differential thermal analysis
Heating
Mathematical models
Perchlorates
Transition metals
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Summary:Three transition metal perchlorate complexes of general formula [M(dah)2)](ClO4)2 (where M = Zn, Cu, and Ni; dah = 1,6-diaminohexane) have been prepared, and characterized by elemental analysis, infrared spectroscopy (IR), and gravimetric method. The thermal decomposition has been studied by thermogravimetry (TG), differential thermal analysis (DTA), and differential scanning calorimetry (DSC). Kinetics parameters of their thermolysis were evaluated by model-fitting and isoconversional methods using isothermal TG data. Model-fitting method has given the single value of activation energy (E) whereas; isoconversional method yields a series of E values which vary with the extent of conversion. Further ignition delay of these complexes was measured to see the response toward rapid heating with varying amounts. The thermal stability of the complexes decreases in the order as: [Zn(dah)2)](ClO4)2 > [Cu(dah)2)](ClO4)2 > [Ni(dah)2)](ClO4)2
ISSN:1388-6150
DOI:10.1007/s10973-010-0968-5