Abstract: it gives a short description of influence of the catalysts, polar solvents, reaction duration, temperature, pressure, hydrocarbons concentration in the reaction mixture, oxygen concentration in the oxidating gas, addition of water into the oxidation zone, removal of the reaction products out of the oxidation zone, step-by-step temperature change in the oxidation zone, step-by-step introduction…
Synopsis: Modification of thermoplastic polymers (polystyrene, vinyl acetate, polyacrylates, polyvinyl chlorides) by introduction of oxygen or oxygen containing gas (air) into monomer polymerization zone and heating of the peroxicontaining polymer which is being formed to 110-180 o C. The ways of utilization of modified polymers to produce electric insulating, thermo insulating and soundproof materials, construction,…
The oil sands are one of the oil sources. They consist of sand and clay saturated with medium and heavy hydrocarbons. Depending on the field the mass fraction of hydrocarbons in the oil sands may range from a few percent to several dozens percent. In general, the mass fraction of oil in the oil sands…
The requirements in lower carboxylic acids: acetic, formic and propionic were given. The mechanism of liquid-phase oxidation of n-pentane was proposed. The main directions of the formation of the oxidation products of n-pentane were illustrated. Based on a study of the reaction mechanism and the influence of the main process parameters on the yield of…
Wear resistant and score resistant additives are used to improve operation and to increase service life of the equipment in which units with different kinds of mechanical movements are used. These additives reduce wear of mechanical parts and improve the equipment service properties. They prevent seizing and grabbing of rubbing metal surfaces at load during…
Abstract. A new burner of a slot type for obtaining fine-dispersed silicium dioxide by silicium tetrachloride high-temperature pyrolysis in water-air mixture is offered here. Urgency of such type burners use is considered. The sketch of the burner is given. The technique of fine-dispersed silicium dioxide obtaining by silicium tetrachloride pyrolysis using the slot type burner…
A new method of the carcass meat packing which makes if possible to improve it’s storage in transit and its keeping. The carcass meat packing is carried out in the following way. After the animals cutting(bull-calves, sheep, pigs, etc.) the warmed up peroxycontaining polyvinylacetate is applied on the surface of the carcass meat. After this…
Key words: polystyrene, obtaining, copper, plastic, technology. Synopsis. A new production line of copper laminated plastic obtaining on the basis of modified thermoreactive polystyrene is suggested here. Utilization of modified thermoreactive polystyrene for copper laminated plastic manufacturing makes it possible to obtain cheap plastic with good physical, chemical and dielectric properties. Utilization of such…
Formic and acetic acid is a widely used commercial product and crude product for obtaining different substances. Total amount of these acids manufactured in the world makes millions of tons a year. Formic acid is the scarcest and the most expensive of them, the demand for it increases every year. There are different methods of…
Abstract. Liquid phase oxidation of n-pentane without oxidate water-acid layer withdrawal from the oxidation zone, with oxidate water-acid layer withdrawal from the oxidation zone and by stages oxidation of the n-pentane with the oxidate water-acid layer withdrawal from the oxidation zone was studied at the temperature 165o C and pressure 5.06 MPa. It has…