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Abstract  

The electronic (absorption and reflectance) as well as the infrared and Raman spectra of Na6[(VO)3(P2O7)3]·7H2O were recorded and discussed. Its thermal behavior was investigated by means of TG and DTA measurements. After a two-step dehydration, the compound melts at 464°C and, apparently, depolymerization takes place during this process. The characteristics of the pyrolysis residues, collected at different temperatures, were spectroscopically investigated.

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Journal of Thermal Analysis and Calorimetry
Authors: Viorel Sasca, Elena Mosoarca, Livia Avram, Ramona Tudose, and Otilia Costisor

Abstract  

The thermal decomposition of Mannich base N,N′-tetra(4-antipyrylmethyl)-1,2-diaminoethane (TAMEN), and its Ni(II), binuclear complex, Ni2(TAMEN)Cl4, in air and in nitrogen atmosphere, were investigated. X-ray powder diffractometry, infrared spectroscopy and simultaneous thermogravimetry-differential thermal analysis (TG-DTA), have been used to characterize and to study the thermal behavior of these compounds. The results provided information concerning the stoichiometry, crystallinity, thermal stability and decomposition mechanism of the compound.

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cells . University Park : Pennsylvania State University Press ; 1970 . 6. Rahimkutty , MH , Babu , KR , Pillai , KS , Sudarsana Kumar , MR , Nair , CMK . Thermal behaviour of

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Journal of Thermal Analysis and Calorimetry
Authors: Marcelo Kobelnik, Douglas Lopes Cassimiro, Adélia Emilia de Almeida, Clóvis Augusto Ribeiro, and Marisa Spirandeli Crespi

Introduction The present article is an extension of previous studies [ 1 – 3 ], and it is a part of our research on the thermal behavior interaction among the diclofenac and metal ions. The diclofenac (2

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Journal of Thermal Analysis and Calorimetry
Authors: Cristina Bucur, Mihaela Badea, Calu Larisa, Dana Marinescu, Maria Nicoleta Grecu, Nicolae Stanica, Mariana Carmen Chifiriuc, and Rodica Olar

and many of these studies were dedicated to bis(macrocycles) based on cyclam moieties [ 1 ]. Some complexes with a polyaza bismacrocyclic ligand have recently studied concerning thermal behaviour [ 20 ]. In order to gain further insight into

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. It has been widely used as a chelate ligand in coordination chemistry [ 9 ]. In this study, the curing and thermal behaviour of DGEBA has been investigated using the very cheaper amines i.e., biuret. Experimental

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]. As a part of our ongoing studies on the biological properties [ 4 – 6 ], structure determinations [ 7 – 9 ], and thermal behavior [ 10 – 13 ] of Pd(II) compounds bearing N -based ligands, we report herein the synthesis, spectroscopic characterization

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Abstract  

This paper reports the investigation of the thermal stability of a series of new complexes with azo and azomethinic chromophores of the type [Er(HL)2(H2O)2](HO); ((B) H2L: o,o’-dihydroxy-azobenzene (A); (D) H2L: N-(2-hydroxy-1-naphthalidene)aminophenol (C); (F) H2L: N-(2-hydroxy-1-naphthalidene)anthranilic acid (E)). The complexes thermal behaviour steps were investigated and comparatively presented with those of corresponding ligand. The thermal transformations are complex processes according to TG and DTG curves including phenol elimination, oxidative condensation and thermolysis processes. The final product of complexes decomposition is Er2O3.

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Abstract  

The effect of 4 mass% Ag addition on the thermal behavior of the Cu-9 mass% Al alloy was studied using differential scanning calorimetry (DSC), optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffractometry (XRD). The results showed that the presence of silver causes (Cu)-α+(α+g1)→ (Cu)-α+β transformation to occur in two stages. In the first one, part of the produced b phase combines with the precipitated Ag to give a silver-rich phase and in the second one the transformation is completed. The formation of this silver-rich phase seems to be enhanced at very low cooling rates.

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Journal of Thermal Analysis and Calorimetry
Authors: Elena Mosoarca, Sasca Viorel, Livia Avram, Ramona Tudose, and Otilia Costisor

Abstract  

The thermal decomposition in air and in nitrogen atmosphere of binuclear complex compounds of Cu(II) and Co(II) containing the Mannich base N,N′-tetra(4-antipyrylmethyl)-1,2 diaminoethane (TAMEN) as a ligand, Cu2(TAMEN)Cl4 and Co2(TAMEN)Cl4, were investigated. X-ray powder diffractometry, infrared spectroscopy and simultaneous thermogravimetry-differential thermal analysis (TG-DTA), have been used to characterize and to study the thermal behavior of these compounds. The results provided information concerning the stoichiometry, crystallinity, thermal stability and decomposition mechanism of the compounds.

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