An improved method for the synthesis of four heterotrinuclearpolyacids of the type: Hx[EM′yM″zO40⋅nH2O (E=P, Si; M′=Mo, W; M″=V, W) was elaborated. The studied compounds were characterized by elemental analysis, IR spectra and thermal behaviour over
20–800C temperature range.
Authors:Houyin Zhao, Yan Cao, William Orndorff, Yu-Hsiang Cheng, and Wei-ping Pan
SA is scarcely used [ 9 ]. The above investigations partially or singularly focused on one aspect of biodiesel and to date, there is no systematic study on thermalbehaviors of biodiesel using thermal analysis techniques, especially the moisture
Authors:Yuehua Song, Shupin Xia, Haidong Wang, and Shiyang Gao
The thermal behavior of synthetic schoenite (K2SO4·MgSO4·6H2)) during heating has been studied by thermal methods. The temperatures of dehydration and decomposition of schoenite have
also been determined by DTA, TG and DSC. The thermal reaction equations and the X-ray power diffraction results of the products
have been given and the corresponding kinetic parameters have also been obtained.
Authors:Marcelo Kobelnik, Douglas Lopes Cassimiro, Diógenes dos Santos Dias, Clóvis Augusto Ribeiro, and Marisa Spirandeli Crespi
kinetic study. The TG/DTG curves with mass samples of 5 mg were not shown because they possess the same features of thermalbehavior.
TG/DTG curves of jerivá oil with sample mass 20 mg mass in nitrogen
Thermal behavior of α-(Cu–Al–Ag) alloys, i.e. alloys
with composition less than about 8.5 mass% Al, was studied using differential
scanning calorimetry (DSC), differential thermal analysis (DTA), scanning
electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray
diffractometry (XRD). The results indicated that the presence of silver introduces
new thermal events ascribed to the formation of a silver-rich phase and, after
addition higher amounts than 8 mass% Ag to the Cu–8 mass% Al alloy it
is possible to observe the formation of the γ1
phase (Al4Cu9), which is only
observed in alloys containing minimum of 9 mass% Al. These results may be
attributed to some Ag characteristics and its interaction with Cu and Al.
Authors:L. A. Perez-Maqueda, C. Maqueda, J. L. Perez-Rodriguez, J. Subrt, Z. Cerny, and V. Balek
temperature phases [ 18 – 25 ]. Thermalbehaviour of vermiculite samples ground by vibratory mill has been characterized using thermal methods [ 26 ]. The comparison of the results obtained by different methods contributed to better understanding of the
This work discusses thermal behavior of Ni/MH battery with experimental methods. The present work not only provides a new
way to get more exactly parameters and thermal model, but also concentrates on thermal behavior in discharging period. With
heat generation rate gained by experiments with microcalorimeter, heat transport equations are set up and solved. The solutions
are compared with experiment results and used to understand the reactions inside the battery. Experiments with microcalorimeter
provide more reliable data to create precise thermal model.
Authors:Shi Jingyan, Wang Zhiyong, Liu Yuwen, and Wang Cunxin
medicine and quality monitoring, was reported rarely. Though several literatures have reported the thermalbehavior of enoxacin [ 4 – 6 ] and its metal complexes [ 7 ], due to adopting only thermal analysis technique and the single heating rate method, it
Authors:Q. Wang, J. Sun, G. Chu, X. Yao, and C. Chen
The thermal behaviors of four organic solvents with/without LiPF6 were measured by C80 microcalorimeter at a 0.2�C min−1 heating rate. With the addition of 1 M LiPF6, the ethylene carbonate (EC) and propylene carbonate (PC) show the exothermic peaks at elevated temperature, which lessen
their stabilities. The exothermic peak temperatures of EC and PC based LiPF6 solutions are at 212 and 223�C, respectively, in argon filled vessel. However, two endothermic peak temperatures were detected
in diethyl carbonate (DEC) based LiPF6 solution at 182 and 252.5�C, respectively, in argon filled vessel. Dimethyl carbonate (DMC) based LiPF6 solution shows two endothermic peak temperatures at 68.5 and 187�C in argon filled vessel at elevated temperature. Consequently,
it is concluded that LiPF6 play a key role in the thermal behavior of its organic solution.
thermo-infrared spectroscopy analysis. Based on these analyses, the kaolinite–DMSO intercalation complex of a low defect (well crystallized) kaolinite from Zhangjiakou in China was prepared. The thermalbehavior of the complex heated in different