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glasses with special properties for electronics, components in medicines, as well as for the production of plant protection chemicals in agriculture. The thermodynamic properties of the compounds studied can be used to develop industrial

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size of the hydrophobic parts and the positional effect of polar groups of a guest molecule on inclusion reactions, the thermodynamic properties of inclusion complexes of CD with aliphatic alcohols and other alcohols have been investigated

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change at the transition pressure lies at 9%. So far, there has been considerable controversy for the phase transition of TiN. On the other hand, to the best of our knowledge, the thermodynamic properties of TiN have not previously been reported. So, we

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Journal of Thermal Analysis and Calorimetry
Authors: Zh. V. Dobrokhotova, A. I. Zaitsev, M. A. Zemchenko, A. D. Litvina, B. M. Mogutnov, and S. N. Yaschenko

The thermodynamic properties of calcium and barium phosphides have been determined in the temperature range 1178–1537 K by a Knudsen effusion technique combined with massspectral analysis of the evaporation products.

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Abstract  

Thermodynamic properties of pure titanium stannides obtained by crucible-less growth techniques under vacuum are determined by differential scanning calorimetry and Knudsen effusion. The enthalpy, specific heat capacity, entropy and Gibbs energy temperature dependence were simulated using Maier and Kelly equations. Standard enthalpies of evaporation, formation and atomization of titanium stannides were determined and compared with earlier-known data.

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A numerical study of the thermodynamic properties of a superconducting quantum cylinder in a longitudinal magnetic field is carried out. Closed-form expressions for the critical temperature, the free energy, the heat capacity jump, and the magnetization difference between the superconducting and normal phases as functions of the nanotube parameters are obtained in limit cases.

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and their thermodynamical properties is experiencing recent activity because of its fundamental research interest and technological applications in the field of microelectronics and optoelectronics, as a substrate for high speed electrical and

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Journal of Thermal Analysis and Calorimetry
Authors: K. Sreekanth, M. Kondaiah, D. Sravana Kumar, and D. Krishna Rao

/isoamyl alcohols and N , N -dimethyl acetamide were added. The study of thermodynamic properties of these multi component liquid mixtures and data on the analysis in terms of various models are important for industrial and pharmaceutical applications [ 6 ] such as

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Thermodynamic properties of binary mixtures containing oxaalkanes

Part VI. Monoethers, acetals, diethers, cyclic mono- and di-ethers + tetrachloromethane

Journal of Thermal Analysis and Calorimetry
Authors: D. Falconieri, B. Marongiu, Alessandra Piras, Silvia Porcedda, and Enrica Tuveri

Abstract  

The data available in the literature on thermodynamic properties concerning different oxaalkanes + tetrachloromethane mixtures are examined on the basis of the DISQUAC group contribution model. The obtained interaction parameters, dispersive and quasichemical, depend on the intramolecular environment of the O atom. The steric effect results in a regular decrease of the quasichemical interaction parameters of the oxygen/tetrachloromethane (e,d)-contact in linear ethers. The proximity effect of the O atoms generates lower coefficients in dioxaalkanes with respect to monooxaalkanes and because of the ring strain, being the quasichemical coefficients constant, the dispersive parameters in cyclic molecule are higher than in linear ethers.

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Thermodynamic properties of binary mixtures containing oxaalkanes

Part V. Monoethers, acetals, polyethers, cyclic mono- and di-ethers+benzene

Journal of Thermal Analysis and Calorimetry
Authors: B. Marongiu, Alessandra Piras, Silvia Porcedda, and Enrica Tuveri

Abstract  

A flow microcalorimeter has been used to determine excess enthalpies, H E, at 298.15 K of binary mixtures of dipentylether, dihexylether, 1,2-dimethoxyethane and 1,2-diethoxyethane (1)+benzene (2). These data along with the data available in the literature on H E, molar excess Gibbs energies, G E and liquid-vapour equilibria (LVE) of non-cyclic monoethers, acetals, polyethers and of cyclic mono- and di-ethers+benzene are examined on the basis of the DISQUAC group contribution model. Using a set of adjusted interchange energies parameters, structure dependent, the model provides a fairly consistent description of the thermodynamic properties as a function of concentration. The interaction parameters, dispersive and quasichemical, depend on the intramolecular environment of the O atom. There is clear evidence for the steric and inductive effects exerted by the alkyl groups adjacent to the O atom, for -O-C-O- proximity effect and for a ring strain effect. The steric effect results in a regular decrease of the dispersive interaction parameters of the oxygen/benzene (e,b) contact; The proximity effect of the O atoms produces a regular decrease and the ring strain a regular increase of the dispersive interaction parameters; the quasi-chemical remain constant.

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