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350 Newest Publications in theoretical foundations of chemical engineering
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Low-temperature anti-icing reagents in aqueous salt systems containing acetates and formiates
16-10-2012 | V. P. Danilov, E. A. Frolova, D. F. Kondakov, L. I. Avdushkina, A. V. Bykov, V. T. Orlova, Theoretical Foundations of Chemical Engineering, 2012
Ice-melting polytherms in binary and ternary aqueous salt systems containing metal and ammonium acetates and formiates were studied in the temperature range of 0 to −70°C. A number of salt mixtures that form low-temperature eutectics with ice were revealed to be promising as a basis for the ...
A new approach to the optimal design of industrial chemical-engineering apparatuses
16-10-2012 | D. S. Dvoretskii, S. I. Dvoretskii, G. M. Ostrovskii, B. B. Polyakov, Theoretical Foundations of Chemical Engineering, 2012
An algorithm is described for the two-stage problem of the optimal design of industrial chemical-engineering apparatuses based on a new approach, in which uncertainty in the mathematical description coefficients and process parameters is taken into account in the formulation of a designing ...
Preparation of concentrated alkali solutions of niobium
16-10-2012 | A. I. Nikolaev, V. G. Maiorov, V. K. Kopkov, O. A. Zalkind, G. I. Kadyrova, Theoretical Foundations of Chemical Engineering, 2012
Concentrated alkali solutions of niobium containing up to 238 g/L of Nb2O5 have been obtained by sintering of Nb2O5 with K2CO3 · 1.5 H2O. These solutions are recommended for use in the production of welding and other functional materials.
Refinery products/waste optimization using a synthesized pinch technique
16-10-2012 | K. E. Abhulimen, V. O. Adeniyi, O. A. Olafadehan, Theoretical Foundations of Chemical Engineering, 2012
An optimal waste minimisation exchange network was designed for the control of effluent, thermal and gaseous wastes generated from process systems. The model used the concept of pinch technique, which was based on a weighted design superstructure that set design products production targets at ...
Effects of vortices on diffusion and heat transfer
16-10-2012 | A. V. Solov’yov, D. A. Kazenin, S. P. Karlov, N. Yu. Shkarin, Theoretical Foundations of Chemical Engineering, 2012
The unusual phenomenon observed by D.I. Taylor and other researchers was explained. During the vortex motion of the liquid, the distributed component of the diffusing substance is concentrated only in the vortex core. The effect was explained in terms of our hypothesis that takes into account ...
Oxide protective films obtained by the extraction pyrolytic method
16-10-2012 | N. Yu. Snezhko, T. N. Patrusheva, D. B. Gershevich, G. I. Sukhova, A. I. Khol’kin, Theoretical Foundations of Chemical Engineering, 2012
The extraction pyrolytic method was used to obtain oxide films. Organic solutions of extracts were applied by dipping followed by thermal treatment of samples. It was shown that a thin film of zirconium dioxide stabilized by yttrium virtually does not reduce the transmission coefficient and ...
Concentration criterion for classifying resource-saving compositions of solutions for metal electroplating
16-10-2012 | E. G. Vinokurov, T. F. Burukhina, V. A. Kolesnikov, S. V. Fadina, Theoretical Foundations of Chemical Engineering, 2012
A comparative analysis is performed of the variations in one of the resource-saving indicators, namely, the concentration of metal ions (Cr, Cu, Ni, Zn, Sn, Cd, Pb, and Fe) in the compositions of solutions proposed and used in different years for electroplating. A quantitative concentration ...
Synthesis of nanosized powders and coatings of calcium phosphates
16-10-2012 | M. A. Medkov, D. N. Grishchenko, N. I. Steblevskaya, I. V. Malyshev, V. S. Rudnev, V. G. Kudryavyi, Theoretical Foundations of Chemical Engineering, 2012
Hydroxyapatite powders with a particle size of nearly 100 nm, i.e., rather close to bone crystals shaped as 60 × 20 × 5-nm flattened prisms, were synthesized by the pyrolysis of a solution of calcium oleate in tributylphosphate. The possibility of synthesizing hydroxyapatite coatings on ...
Fundamentals of technology of mechanochemical synthesis of titanium carbide using various carbon components
16-10-2012 | D. V. Onishchenko, V. P. Reva, Theoretical Foundations of Chemical Engineering, 2012
It was established that the main criteria for achieving mechanochemical synthesis in titanium-carbon system represent the structure of carbon modifications and their degree of aromaticity. The promise of the use of soot + graphite carbon composition for the mechanochemical synthesis of ...
Oxidative desulfurization of diesel fuels in the presence of crown ethers and transition metal peroxo complexes
16-10-2012 | E. V. Rakhmanov, Dan Jinyuan, O. A. Fedorova, A. V. Tarakanova, A. V. Anisimov, Theoretical Foundations of Chemical Engineering, 2012
The catalytic activity of crown ethers and their complexes with transition metal cations in diesel fuel desulfurization has been investigated. With dibenzo-18-crown-6 in combination with NbCl5, the total sulfur content of the fuel can be reduced by a factor of 2 or larger. The effects of the ...
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