Journal of Thermal Analysis
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Influence of Doping of NaNO3 on the Solid Phase Thermal Decomposition of Bitumen and Cement
Journal of Thermal Analysis - Tập 63 - Trang 525-532 - 2000
The thermal stability of solidified NaNO3 salts in bitumen and cement has been investigated for safety considerations in the field of solidification of radioactive waste. The thermal decomposition of bitumen and cement in presence of NaNO3 in a temperature range 22–650°C has been studied. The fraction decomposed of the pure samples and mixtures showed slow linear reactions followed by acceleratory...... hiện toàn bộ
Synthesis, molecular structure, non-isothermal decomposition kinetics and adiabatic time to explosion of 3,3-dinitroazetidinium 3,5-dinitrosalicylate
Journal of Thermal Analysis - - 2009
Method of preparation and thermodynamic properties of transparent Y3Al5O12 nanoceramics
Journal of Thermal Analysis - Tập 111 - Trang 289-294 - 2012
We first introduce the latest experimental results, i.e., production of the fine nanostructured and near fully dense transparent Y3Al5O12 (YAG) bulks at high pressure and modest temperature (2.0–5.0 GPa and 300–500 °C). And then, we employ the first-principles plane wave pseudopotential density functional theory method to calculate the equilibrium lattice parameters and the thermodynamic propertie...... hiện toàn bộ
Forward ion-exchange kinetics of heavy metal ions on the surface of carboxymethyl cellulose Sn(IV) phosphate composite nano-rod-like cation exchanger
Journal of Thermal Analysis - Tập 110 - Trang 715-723 - 2011
The Nernst–Planck equations with some additional assumptions was used in this study to investigate the forward kinetics and ion-exchange mechanism of heavy metal ions viz. Ni2+–H+, Cu2+–H+, Mn2+–H+ and Zn2+–H+ on the surface of carboxymethyl cellulose Sn(IV) phosphate composite nano-rod-like cation-exchanger. It was observed that heavy metals' exchange processes were imparted by the particle diffu...... hiện toàn bộ
Crystallization kinetics of amorphous Se
Journal of Thermal Analysis - Tập 114 - Trang 473-482 - 2013
Differential scanning calorimetry was used to study crystallization behavior in selenium glass under non-isothermal conditions. The crystallization kinetics were described in terms of the Johnson–Mehl–Avrami nucleation-growth model; activation energies and kinetic parameter m
JMA were determined. The study was performed in dependence with particle size, so that a novel approach to ...... hiện toàn bộ
The influence of temperature and different storage conditions on the stability of supersulphated cement
Journal of Thermal Analysis - Tập 45 - Trang 385-394 - 1995
The stability of Supersulphated Cement (SSC) is investigated at 95°C when subjected to relative humidities of 100, 53 and 11% of water vapour. Previously [1] investigations at 25, 50, 75°C under the same conditions of humidity reported the stability of ettringite, one of the initial hydration products. At 95°C, decomposition of ettringite, is found at all humidities and is rapid at 100% relative h...... hiện toàn bộ
Non-isothermal degradation-based solid state kinetics study of copper (II) Schiff base complex, at different heating rates
Journal of Thermal Analysis - Tập 107 - Trang 111-117 - 2011
The coordination complex of Cu (II) with the Schiff base derived from 4-chloroaniline with salicylaldehyde have been synthesized and characterized by micro analytical data; FT–IR, UV–Vis, FAB-mass and thermal analysis studies. Thermal data show degradation of complexes. We carried out thermal analysis at three different heating rates viz. 5, 10 and 20 °C per min. The activation thermodynamic param...... hiện toàn bộ
Isothermal transformation of dynamic DSC curves for thermosetting polymers in curing kinetics analysis
Journal of Thermal Analysis - Tập 36 - Trang 45-54 - 1990
To predict the isothermal course of a reaction from the dynamic DSC curves, the application of isothermal DSC curve transformation has been proposed. To perform such a transformation, it is sufficient only to determine the effective activation energy. To transform integral dynamic curves,α(T)), into isothermal ones,α(t), a better equation has been derived and its validity has been demonstrated on ...... hiện toàn bộ
A search for new phases in the system Fe2O3-V2O5-WO3
Journal of Thermal Analysis - Tập 36 - Trang 2165-2168 - 1990
Studies on the three-component system Fe2O3-V2O5-WO3 have shown the occurrence of a new, compound with molecular formula FeVW2O10. Its X-ray characteristics and its melting temperature, 865±10 °C, have been established.
Tổng số: 9,055
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