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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015011260
pages 147-162

THERMOLYSIS AND THEIR KINETICS OF COPPER AND ZINC PERCHLORATE COMPLEXES WITH 2-AMINOPYRIDINE LIGAND

Chandra Prakash Singh
Department of Chemistry, Dayanand Brajendra Swarup College (DBS) College, Kanpur 208006, India
Ashok Kumar Srivastava
Department of Chemistry DBS College, Kanpur-208006, India
Abhishek Singh
Department of Chemistry, Dayanand Brajendra Swarup College (DBS) College, Kanpur 208006, India
Bandana Singh
DDU Gorakhpur University, Gorakhpur-273009, India

RÉSUMÉ

Copper and zinc perchlorate complexes with 2-aminopyridine (2-Apy) of the general formula [Cu(2-Apy)3](ClO4)2.H2O and [Zn(2-Apy)2](ClO4)2 have been prepared and characterized by gravimetry, Fourier transform infrared (FT-IR), and C,H,N analysis. Thermal decomposition has been studied by thermogravimetry (TG) and differential thermal analysis (DTA). Kinetic parameters of their thermolysis were evaluated by model fitting as well as isoconversional methods using isothermal TG data. On applying model-fitting method average activation energy of thermal decomposition (α = 0.32, α is extent of conversion) was found to be 5.5 and 17.4 kJ mol−1, respectively, for copper and zinc complexes, whereas in the case of isoconversional method activation energy changes with extent of conversion (α). In order to evaluate the responses of rapid heating, explosion delay (DE) measurements were undertaken. Activation energy of explosion were found to be 21.3 and 37.4 kJ mol−1 for copper and zinc complex, respectively. The explosion delay measurements and activation energy values have shown their thermal stability in the following order: [Cu(2-Apy)3](ClO4)2.H2O < [Zn(2-Apy)2](ClO4)2.


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