A study of the thermodynamics of the crystalline-to-amorphous transformation in Zr-based hydrides by means of thermal analysis

1987 ◽  
Vol 2 (2) ◽  
pp. 173-177 ◽  
Author(s):  
X. L. Yeh ◽  
E. J. Cotts
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Metallic Glasses ◽  
Scanning Calorimetry ◽  
Thermal Stabilities ◽  
Enthalpy Difference ◽  
Fcc Alloys ◽  
Fcc Phase ◽  
Thermal Stability Of

Amorphous Zr–Rh and Zr–Pd hydrides are prepared both by hydriding metallic glasses and by hydriding metastable, polycrystalline fcc alloys. The thermal stabilities of the amorphous hydrides produced by these two distinct methods are examined by means of differential scanning calorimetry and are found to be similar. The enthalpy difference between the fcc phase and the amorphous phase of Zr81Rh19 is determined to be 0.6 kcal/mol. The thermal stability of Zr–Rh hydrides as a function of hydrogen concentration is investigated.

scholarly journals Thermal stability and thermal decomposition of sucralose

2018 ◽  
Vol 39 (4) ◽  
pp. 21
Author(s):  
Gilbert Bannach ◽  
Rafael R. Almeida ◽  
Luis G. Lacerda ◽  
Egon Schnitzler ◽  
Massao Ionashiro
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Thermal Decomposition ◽  
Differential Thermal Analysis ◽  
Infrared Spectroscopy ◽  
Scanning Calorimetry ◽  
Thermoanalytical Techniques ◽  
Thermal Stability Of

Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC) and infrared spectroscopy, have been used to study the thermal stability and thermal decomposition of sweetener.

scholarly journals Preparation, Characterization, and Stability of the (1-x) CsH2PO4 + xTiO2 Composite Electrolytes for Fuel Cells

2021 ◽  
Author(s):  
Deshraj Singh ◽  
Pawan Kumar ◽  
Jitendra Singh ◽  
Dharm Veer ◽  
Ram S Katiyar ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Vapor Deposition ◽  
Ionic Conduction ◽  
Minimum Weight ◽  
Composite Electrolytes ◽  
Scanning Calorimetry ◽  
Dehydration Behavior ◽  
Thermal Stability Of

Abstract Composite Electrolytes (1-x)CsH2PO4/xTiO2(0 ≤ x ≤ 0.4) were prepared and analyzed the structural, thermal, and transport properties. We have investigated the ionic conductivity of the composites electrolyte highly pressurized pellets and found that the conductivity of pure CsH2PO4 (CDP) increased three orders of magnitude at the transition temperature. The conductivity value of the composites is greater than pure CDP after 250°C. Arrhenius plots have confirmed the conductive nature of ionic conduction. The dehydration behavior and thermal stability of the materials were observed in terms of differential scanning calorimetry, thermogravimetric analysis and differential thermal analysis, and found that the minimum weight loss for the composite 0.6CDP/0.4TiO2. The electrodes were prepared with the technique of vapor deposition.

scholarly journals Application of thermal analysis and calorimetry for assessment of safety and quality of nitrogen fertilizers

2018 ◽  
Vol 189 (3) ◽  
pp. 206-217
Author(s):  
Dariusz Poplawski ◽  
Maciej Kaniewski ◽  
Jozef Hoffmann ◽  
Krystyna Hoffmann
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Nitrogen Fertilizers ◽  
Scanning Calorimetry ◽  
Proper Selection ◽  
Thermal Stability Of ◽  
Selection Of ◽  
And Calorimetry

The paper presents the results of studies carried out using differential thermal analysis (DTA) and differential scanning calorimetry (DSC), conjugated with thermogravimetry (TG). Measurements were made for samples with differentiated compositions, mainly consisting of ammonium nitrate with fertilizer purity and compounds that may be present in nitrogen fertilizers as potential additives or contaminants. The possibilities of applied techniques and recommendations concerning proper selection of measurement conditions are described. Furthermore, the method of interpretation of the obtained results is presented, which allows evaluating the thermal stability of the tested mixtures for the safety and quality of nitrogen fertilizers.

Thermal Stability of N-Heterocycle-Stabilized Iodanes – A Systematic Investigation

2019 ◽  
Author(s):  
Andreas Boelke ◽  
Yulia A. Vlasenko ◽  
Mekhman S. Yusubov ◽  
Boris Nachtsheim ◽  
Pavel Postnikov
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Thermogravimetric Analysis ◽  
Systematic Investigation ◽  
Scanning Calorimetry ◽  
Thermal Stability Of

<p>The thermal stability of pseudocyclic and cyclic <i>N</i>-heterocycle-stabilized (hydroxy)aryl- and mesityl(aryl)-l<sup>3</sup>-iodanes (NHIs) through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) is investigated. NHIs bearing <i>N</i>-heterocycles with a high N/C-ratio such as triazoles show among the lowest descomposition temperatures and the highest decomposition energies. A comparison of NHIs with known (pseudo)cyclic benziodoxolones is made and we further correlated their thermal stability with reactivity in a model oxygenation. </p>

scholarly journals Thermal stability of Sn anode material with non-aqueous electrolytes in sodium-ion batteries

2018 ◽  
Vol 6 (41) ◽  
pp. 20383-20392 ◽  
Author(s):  
Yongho Lee ◽  
Hyojun Lim ◽  
Sang-Ok Kim ◽  
Hyung-Seok Kim ◽  
Ki Jae Kim ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Thermal Behavior ◽  
Anode Material ◽  
Sodium Ion ◽  
Aqueous Electrolytes ◽  
Sodium Ion Batteries ◽  
Scanning Calorimetry ◽  
Sn Anode ◽  
Thermal Stability Of

The thermal behavior of fully lithiated and sodiated Sn electrodes cycled in a MePF6 (Me = Li or Na)-based electrolyte was studied using differential scanning calorimetry (DSC).

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