Adsorption of Hydrocarbons from Gas-Air Mixture on Polypropylene Stereoisomers

Kinetics of absorption of a mixture of aliphatic, aromatic, and unsaturated hydrocarbons from the gas phase onto polypropylene containing 5, 18, and 40% atactic polymer in its molecular lattice was studied. The kinetic parameters, equilibrium constant, and Gibbs energy of adsorption-desorption of the hydrocarbons were determined by zero-, first-, and second-order optimization of the solution of the multiparameter equation. These parameters were correlated with the adsorbent composition and the number of sorption-desorption cycles.     

Adsorption of Gaseous Hydrocarbons on the Surface of Modified Petroleum-Polymeric Resins

The kinetics of adsorption of model hydrocarbons (benzene, toluene, ethyl benzene, isopropyl benzene, cyclohexane) from the gas phase on the surface of ozonized and maleized petroleum-polymeric resins was studied. The dependences of the dynamic equilibrium capacity of the petroleum-polymeric resins and of the adsorption kinetic parameters on the composition of the adsorbent-adsorbate system were elucidated.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 2, 2005, pp. 245–248.Original Russian Text Copyright © 2005 by Bondaletov, Troyan, Chernov, Bannikova, Dmitrieva.     

Production of a wide range of hydrocarbon oligomers on the basis of boiler output of column K-27 in Plant EP-300

Production of a wide range of hydrocarbon oligomers on the basis of boiler outputs of column K-27 in Plant EP-300 (Manufacture “Etilen”, Tomsk). A successful outcome can be attained without a radical change in the column operation by governing the rectification mode and by insignificant reorganization of the movement of flows that simultaneously improve the technical performance of heavy pyrolysis tar obtained in the same setup. The possibility of obtaining both aromatic and cycloaliphatic oligomers of different compositions and structures using catalytic systems based on titanium chlorides and organoaluminum compounds (OAC) produced in the catalyst manufacture Tomskneftechim was demonstrated.     

Liquid-Vapor Phase Equilibria in Binary and Ternary Subsystems Constituted by Pyrocondensate Components from the Pyrolysis of Straight-Run Naphtha

Liquid-vapor equilibrium in the binary subsystems of the ethylbenzene-o-xylene-α-methylstyrene-p-vinyltoluene-dicyclopentadiene-indene system was predicted using UNIFAC group model and studied experimentally. To assess the reliability of parameters, the liquid-vapor equilibrium was studied experimentally in the ternary systems and compared with the calculated data.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 3, 2005, pp. 403–407.Original Russian Text Copyright © 2005 by Prikhod’ko, Komarova, Gorelova, Gorlova, Bondaletov.     

Contactless induction acceleration of conductors up to hypersonic speeds

The results of an experimental investigation of the induction acceleration of ring conductors having a mass of 0.5–3 g in the pulsed magnetic field of a single-turn inductor are presented. It is shown that low-inductive capacitive energy stores in conjunction with single-turn single-shot inductors are very efficient. A speed of 3.7 km/sec was obtained experimentally with an aluminum conductor of mass 0.77 g. Methods of measuring the very high speeds of projected objects are described. The interaction of the accelerated conductor with thick and thin barriers was investigated, and the possibility of controlling the area of the damaged surface is pointed out. The results of the experiment agree well with calculations carried out on a computer which indicate the possibility of a further increase in the speed of projection.     

Acceleration of conductors to supersonic speeds in a pulsed magnetic field

The effect of the shape of the current-density curve and the initial angle of acceleration on the velocity of projection of current-carrying conductors in a pulsed magnetic field produced in the discharge of a capacitive energy accumulator is investigated. A variational problem is solved to determine the optimum current-density function in the projected body for a given magnetic-induction function. It is shown that the relation j =KB, where K is a constant, gives the maximum velocity. For a uniform magnetic field varying as a damped sinusoid, expressions are obtained for the current density in the accelerated body, the velocity of projection, and the acceleration path. It is shown that there is an optimum initial angle of acceleration depending on the amplitude and frequency of the accelerating force and the acceleration path. A procedure is presented for the approximate design of a hypersonic electromagnetic accelerator. In accord with the conclusions of the theory an experimental arrangement is set up and a study is made of the projection of conductors in a pulsed magnetic field. A maximum velocity of 10.5 km/sec is obtained for 0.16-mm diameter aluminum wires.Translated from Zhurnal Prikladnoi Mekhanika i Tekhnicheskoi Fiziki, No. 3, pp. 44–53, May–June, 1974.