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- Title
Preparation, thermal decomposition process and kinetics for terbiump-methoxybenzoate ternary complex with 1,10-phenanthroline.
- Authors
Zhang, J.-J.; Wang, R.-F.; Wang, S.-P.; Liu, H.-M.; Li, J.-B.; Bai, J.-H.; Ren, N.
- Abstract
The complex of [Tb2(p-MOBA)6(PHEN)2] (p-MOBA=C8H7O3,p-methoxybenzoate; PHEN=C12H8N2, 1,10-phenanthroline) was prepared and characterized by elemental analysis and IR spectroscopy. The thermal behavior of Tb2(p-MOBA)6(PHEN)2 in a static air atmosphere was investigated by TG-DTG, DTA, SEM and IR techniques. By the kinetic method of processing thermal analysis data put forward by Malek et al., it is defined that the kinetic model for the first-step thermal decomposition is SB(m,n). The activation energyEfor this step reaction is 140.92 kJ mol-1, the enthalpy of activation ?H? is 136.06 kJ mol-1, the Gibbs free energy of activation ?G? is 145.16 kJ mol-1, the entropy of activation ?S? is -15.53 J mol-1, and the pre-exponential factor lnA is 29.26. The lifetime equation at mass loss of 10% was deduced as lnt =-28.72+1.943·104/Tby isothermal thermogravimetric analysis.
- Subjects
CHEMICAL decomposition; TEMPERATURE measurements; GRAVIMETRIC analysis; CHEMICAL reactions; CHEMICAL kinetics; THERMOGRAVIMETRY; TERBIUM; MATHEMATICAL complexes
- Publication
Journal of Thermal Analysis & Calorimetry, 2005, Vol 79, Issue 1, p181
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-004-0582-5