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Showing papers in "Thermochimica Acta in 1977"


Journal ArticleDOI
TL;DR: In this paper, a thermodynamic study of the liquid-solid phase transformations in porous materials provides the relationships between the size of the pores in which solidification takes place and the temperature of the triple point of the divided liquid, on the one hand, and between this temperature and the apparent solidification energy on the other hand.

703 citations


Journal ArticleDOI
TL;DR: In this article, a new composition path, Xi-Xj=constant, is suggested for the semi-empirical calculation of the thermodynamic properties of ternary substitutional solutions from binary data, when the binary systems show deviations from the regular solution model.

196 citations


Journal ArticleDOI
TL;DR: In this paper, a comparative study of phase-boundary and diffusion-controlled reactions has been carried out using thermogravimetric data, and the results reported support the hypothesis that a single TG diagram does not allow the determination of whether a solid decomposition reaction is controlled by a diffusion mechanism or governed by the movement of an interface coming from a nucleation process.

98 citations


Journal ArticleDOI
TL;DR: In this paper, the enthalpies of formation of glycine and Lα-alanine were determined by two complementary techniques: combustion calorimetry and change of state (sublimation) calorimi.

68 citations


Journal ArticleDOI
TL;DR: In this paper, isothermal and dynamic techniques were employed to examine the rate of weight loss of CaCO3 in an atmosphere of He, N2, Ar, and various percentage of CO2 in Ar.

67 citations


Journal ArticleDOI
TL;DR: In this article, a combined numerical method was employed to treat the themogravimetric data for the dehydroxylation of magnesium hydroxide obtained in our own laboratory. Satisfactory results were obtained.

65 citations


Journal ArticleDOI
TL;DR: In this paper, a Mettler combined with a quadrupole mass spectrometer (Balzers) by a capillary inlet system allows simultaneous DTA, TG and evolved gas analysis in different atmospheres.

55 citations


Journal ArticleDOI
TL;DR: In this article, the authors describe the methodology of the study of chemical kinetics under non-isothermal conditions realized at programmed heating, and a short critical review is given of the available approaches to determine kinetic parameters from thermal analysis data.

50 citations


Journal ArticleDOI
TL;DR: The thermal decomposition of ferric acetate,Fe(CH 3 COO) 3, has been investigated using thermogravimetry (TG), differential thermal analysis (DTA), the conventional method involving the measurement of the volume of gaseous products evolved during decomposition and the X-ray diffraction technique.

43 citations


Journal ArticleDOI
TL;DR: In this paper, the effects of α-Fe2O3 and α-Al 2O3 additives on the thermal decomposition of perchlorates, oxalates and hydroxides were investigated by means of DTA, TG and X-ray techniques.

37 citations


Journal ArticleDOI
TL;DR: The vapor pressure of pure liquid indium, and the sum of pressures of (In) and (In2O) species over the condensed phase mixture {In} +, contained in a silica vessel, have been measured by Knudsen effusion and Langmuir free vaporization methods in the temperatue range 600 to 950°C as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this paper, a survey of methods and instruments for heat-flow calorimeter is given, and a new Bench Scale Heat-Flow Calorimeter (BSF) is presented.

Journal ArticleDOI
TL;DR: In this paper, a combination of differential thermal analysis and X-ray structure analysis is used to investigate the formation of double halides in complicated systems of CoX 2 (X = Cl, Br.I) and TlBr/CoBr 2.

Journal ArticleDOI
TL;DR: In this article, a gravimetric method has been used to determine the weight of the glycerol monolayer, which was used to calculate the internal and external surface area of different clays.

Journal ArticleDOI
TL;DR: In this paper, liquid phase PVT data were obtained at 0°C, 45°C and 90°C for pressures up to 217.7 atm for various binary mixtures.

Journal ArticleDOI
TL;DR: In this paper, isothermal differential scanning calorimetry is used to determine kinetic parameters for the thermal decomposition of 2,4,6-trinitrotoluene (TNT).

Journal ArticleDOI
TL;DR: In this paper, a thermobalance and a quadrupole mass spectrometer with chemical ionization (CI) was used to investigate thermal decomposition reaction under normal pressure most efficiently.

Journal ArticleDOI
TL;DR: Gibbs energy and entropy data for aqueous Fe 2+, FeOH +, HFeO − 2 and FeO 2− 2 are critically reviewed in this paper, where the most reliable values are used in a Criss-Cobble extrapolation to calculate Gibbs energies to 300°C and, hence, the solubility of Fe 3 O 4 in H 2 O and D 2 O as a function of the pH or pD at 25°C.

Journal ArticleDOI
TL;DR: Differential scanning calorimetry (DSC) has been used to determine the enthalpy of dehydration of manganese(II) oxalate dihydrate as discussed by the authors.

Journal ArticleDOI
TL;DR: In this paper, a computing program is described which enables us to find the most probable reaction mechanism from 11 kinetics equations by using a statistic test method, which can be due to diffusion, nucleation, chemical reactions and phase boundary reactions.

Journal ArticleDOI
TL;DR: By coupling a quadrupole mass spectrometer (QMS) with a thermoanalyzer (TA), it is possible to obtain information on the gases evolving during the heating process and this combination has proved to be helpful for the interpretation of thermal processes as discussed by the authors.

Journal ArticleDOI
TL;DR: The thermal decomposition of tetrakis(diethyldithiocarbamato)tin(IV) has been studied by TG/DTA, EGA and P/GC-MS techniques as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this article, the authors describe the application of differential scanning calorimetry (DSC) and differential scanning dilatometry (DSD) to molecular biology and describe the modification and operation of two commercial differential scanning calcorimeters for use in molecular biology.

Journal ArticleDOI
TL;DR: The influence of the structure of these molecules on their reactivity towards the hydrogen ion was discussed, on the basis of the related ΔH° and ΔS° functions as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this paper, the R theory of amphiphybrid mesophases has been used in the interpretation of phase transitions in molten carboxylate systems, and the results of the analysis were shown to be useful in the analysis of phase transition in lead dodecanoate/lead oxide.

Journal ArticleDOI
TL;DR: In this paper, three dihalotin(IV) bisdiethyldithiocarbamates have been subjected to controlled pyrolysis/GC-MS analysis and the major products of the first stage of decomposition identified.

Journal ArticleDOI
TL;DR: In this paper, it was shown that the source of carbon can affect the decomposition and reaction characteristics of black powder compositions and that the removal of these volatiles causes an increase in ignition temperature and activation energy.

Journal ArticleDOI
Erwin Marti1
TL;DR: In this paper, an attempt is made to review the level of development of the subjects covered by the Swiss Society for Thermal Analysis and Calorimetry, namely thermal analysis, calorimetric and chemical thermodynamics.

Journal ArticleDOI
TL;DR: In this article, the authors reported first results concerning the simultaneous determination of equilibrium constants and enthalpies of reaction by titration conduction microcalorimetry, and described an electronic on-line corrector.

Journal ArticleDOI
TL;DR: In this article, phase transformations were considered that occur in the process of calcination of aluminium hydroxide, and for qualitative phase analysis low-temperature X-ray analysis was used.