Published in Physics and Chemistry of Minerals
The thermal expansion of orthorhombic CaFe2O4-type β-CaCr2O4, ellinaite, was studied by high temperature in-situ synchrotron X-ray diffraction measurements in the temperature range of 301–973 K at atmospheric pressure. Based on the obtained data, the thermal expansion coefficients of β-CaCr2O4 were determined as 2.84(3) × 10–5 K−1, 1.08(1) × 10–5 K...
The transition towards 4th generation systems is making district heating increasingly efficient and complex: a broad variety of novelties are being introduced, like the ever-growing integration of renewable sources, the use of lower operating temperatures, the interaction with other energy grids. These new elements are challenging the features of e...
The energy required for the heating and cooling of buildings is strongly dependant on the thermal properties of the construction material. Cement mortar is a common construction material that is widely used in buildings. The main aim of this study is to assess the thermal properties of cement mortar in terms of its thermal conductivity, heat capac...
Published in Journal of pharmaceutical sciences
The thermodynamic relationship between FI and FII of ethyl 4-aminobenzoate (benzocaine) has been investigated. Slurry conversion experiments show that the transition temperature below which FI is stable is located between 302 K-303 K (29 °C-30 °C). The polymorphs FI and FII have been characterised by infrared spectroscopy (IR), Raman spectroscopy, ...
Published in Applied Physics A
Powders of silver (Ag2HgI4) and copper (Cu2HgI4) tetraiodomercurates were synthesized by a simple co-precipitation method. Their phase transition behavior was investigated by differential scanning calorimetry, X-ray diffraction (XRD), as well as diffuse reflectance to determine its reversibility and stability during heating–cooling cycles. Calorime...
Published in SN Applied Sciences
The 4d transition metal ruthenium pyrochlore Dy2Ru2O7(s) was synthesized by solid state reaction route. High temperature studies on the ternary oxide Dy2Ru2O7(s) an important ferroelectric and magnetic material, has been carried out using solid-state electrochemical cell, with calcia stabilized zirconia electrolyte and the reversible electromotive ...
Published in Journal of Molecular Modeling
The phonon spectra and heat capacities of 2, 4, 6, 8, 10, 12-hexanitrohexaazaisowurtzitane/1-methyl-3, 4, 5-trinitropyrazole (CL-20/MTNP) cocrystal and co-formers were calculated in the framework of DFT. By analyzing the phonon density of states (DOS), the energy flow directions and trigger bonds of cocrystal and co-formers have been obtained and t...
Published in International Journal of Thermophysics
PVT properties and the thermal-pressure coefficient, γV=∂P/∂TV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma_{\text{V}} = \left( {\partial P/\partial T} \right)...
Published in International Journal of Thermophysics
We present an explicit, simple and yet accurate expression of the heat capacity of solids by approximating the Debye integral. This model can be used for temperatures greater than one-tenth of Debye temperature. The results of this approximate model are finally compared with experimental data of Cu, MgO and ZnO and show a very good agreement.
Published in ChemTexts
Several carboxylic acids and hydrogen fluoride show a strange behavior in the vapor phase, which is assigned to the association of the monomers. The association to dimers or even higher molecular structures is expressed by the compressibility factor, which is well below 1 even at low pressures for the respective components. The purpose of this pape...
