Fig. 2 shows a thermo-gravimetric analysis (TGA) of a sample stored for several days in ambient conditions, showing that the sample loses around 39% of its mass in two steps. First, Ca (OH) 2...

2019年11月1日 · The accurate determination of decomposition temperature, as well as the weight loss of the material as a function of temperature, is achieved by Thermogravimetric and Differential Scanning Calorimetry (TGA/DSC) techniques.

TGA data displays CaAc decomposed at a constant rate of 20 °C min -1 to 1000 °C. The thermal decomposition of CaAc measured here (Fig. 1) is in good agreement with previously reported data [8,9]....

2020年3月15日 · Micro-fluidized bed thermogravimetric analysis (MFB-TGA) was developed to measure the fast reaction kinetics of the CaO–CO 2 reaction in calcium looping. The real-time mass variations of a solid sample with time were directly measured, and the experimental data were analyzed with a K-L model to evaluate the effect of gas exchange between the ...

Thermal gravimetric analysis (TGA) is a thermal characterization method that measures the mass of a sample over time as the temperature increases at a determined rate. The main use is to detect chemical based changes that include decompositions of volatiles, solid-gas reactions and chemisorption’s based on temperature.

TGA–DSC curves of the Ca (OH) 2 nano-particles from 25 to 1000 8C. CaO is an important material because of its application as catalyst and effective chemisorbents for toxic gases. In this...

2014年1月25日 · Samples were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), infrared spectrum (IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunaure–Emett–Teller (BET). SEM images showed that CaO nano-particles were nearly spherical in morphology.

Thermogravimetric analysis or thermal gravimetric analysis (TGA) is an analytical technique whereby the mass of a sample is measured over time, as the temperature changes. This technique can therefore be used by researchers as a means of analysing the thermal stability of a sample as well as the composition/purity of a sample.

The extruded cordierite honeycomb structure from a stoichiometric formulation of talc, kaolinite, and alumina was subjected to TGA-DSC, dilatometric and XRD investigations. The experimental observations were made to identify the phase transformation sequence in order to understand the solid state reactions involved in the cordierite formation.

2023年9月19日 · Mayenite-supported CaO represents an affordable and safety-compliant candidate material for thermochemical storage processes. We here analyze the thermogravimetric analysis (TGA) performance of synthetic CaO/mayenite micrometric powder under carbonatation/calcination looping and develop a model to interpret …