Search Results

You are looking at 171 - 180 of 879 items for :

  • "differential thermal analysis" x
  • Refine by Access: All Content x
Clear All

separated from corrugated asbestos−cement (a−c) slates. In this case, any additional purification was not applied. All asbestos samples were studied by differential thermal analysis (DTA) and thermogravimetric analysis (TG). Mineralogical composition and

Open access
Journal of Thermal Analysis and Calorimetry
Authors: Veridiana Reyes-Zamudio, Carlos Angeles-Chávez, and Jorge Cervantes

techniques [differential thermal analysis (DTA), thermogravimetry (TG), and dynamic mechanical analysis (DMA)] and supplementing the information with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and environmental scanning electron

Restricted access

transition temperature, T g , the onset temperature of crystallization, T in , the temperature corresponding to the maximum crystallization rate, T p , of differential thermal analysis (DTA) curves of different heating rates beside the kinetic parameters

Restricted access

transformations temperatures can be evaluated by different methods like differential thermal analysis (DTA), differential scanning calorimetry, high-temperature X-ray diffraction, neutron diffraction, dilatometry, and Raman scattering. As well as theoretical

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Seied Mahdi Pourmortazavi, Mehdi Rahimi-Nasrabadi, Iraj Kohsari, and Seiedeh Somayyeh Hajimirsadeghi

]. Thermal analysis techniques such as differential scanning calorimetry (DSC) and thermogravimetry-differential thermal analysis (TG/DTA) are powerful systems for acquiring thermal decomposition and kinetic data on energetic materials [ 11 ]. Until

Restricted access

programmed with thermal gravity-differential thermal analysis. Although glyphosate is widely used, several of its important thermodynamic and kinetic data are scarce, and the research of the thermal decomposition process and its kinetics has not been reported

Restricted access

chemical decomposition reactions. It was initially developed for differential thermal analysis (DTA) data and based on the Arrhenius equation: 1 where A is the pre-exponential factor, E is the activation energy, R is universal gas constant (8.314 J

Restricted access

Nanocrystalline TiO2/SnO2 composites for gas sensors

An International Forum for Thermal Studies

Journal of Thermal Analysis and Calorimetry
Authors: M. Radecka, A. Kusior, A. Lacz, A. Trenczek-Zajac, B. Lyson-Sypien, and K. Zakrzewska

has been demonstrated. Material characterization is important for predicting the best performance of composite nanosensors. Special importance is paid to Differential Thermal Analysis (DTA), Thermogravimetry (TG) and Mass Spectrometry (MS) as suitable

Restricted access

Abstract  

An established DTA/T/EGD/GC on-line coupled simultaneous technique and relevant equipment were applied to identify the micro impurity minerals—pyrite and siderite in two kinds of dolomite in air and N2. The proportional five-component mixed minerals (siderite, kaolinite, dolomite, calcite and quartz) and the proportional six-component mixed minerals (pyrite and the above five minerals) were detected in N2 and in air/CO2 (1∶1) separately by applying DTA/EGD/GC and DTA/GC. The experimental results provide the basis for demonstration of the reaction mechanism of thermal decomposition of various gas—solid-phase minerals in N2 and air/CO2. The compositions of six-component mixed minerals can be distinguished individually from the DTA/GC curves; reliable results are obtained.

Restricted access

On the pyrolytic decomposition of cadmium carbonate

Thermogravimetry and exoemission of electrons

Journal of Thermal Analysis and Calorimetry
Authors: L. Biernacki and S. Pokrzywnicki

The pyrolytic decomposition of cadmium carbonate was studied by thermogravimetry (TG), derivative thermogravimetry (DTG), differential thermoanalysis (DTA) and exoemission of electrons (EEE).

Restricted access