CHEMISTRY AND CHEMICAL ENGINEERING

KIMYO VA KIMYO TEXNOLOGIYASI

TECHNOLOGY OF INORGANIC SUBSTANCES AND MATERIALS

 

Rakhimov R. Mechanism of oscillation of infrared impulses the functional ceramics

The present work is devoted to the possible mechanism of the transformation of functional ceramics, synthesized in the Solar Furnace, the primary energy source in pulsed infrared light in the spectral range and with certain temporal characteristics.

 

Samady M. A., Mirzakulova I. B., Melikulova G. E., Mirzakulov H. Ch.

Receiving Lemery salt from floatation chloride of a potassium and a mirabilit of the Tumryuk field

The process conversion of potassium chloride of Tyubegatan deposit with sodium sulfate of Tumryk deposit is investigated. Determined optimal technological parameters of conversion of potassium chloride and obtain potassium sulfate. Solution and pulps of process conversion and potassium sulfate have good theological properties.

 

Rakhmatkariyev G. U., Usmanova F. G., Ergashev O. K., Doliyev G. A., Yakubov Y. Yu.

Isotherms, differential isosteric warmth and entropies of adsorption of H₂S in NaX zeolite

The isotherms of H₂S adsorption in NaX zeolite at 0, 25, 60 and 100^оC have been measured. The isosteric heats and entropies of H₂S adsorption in the NaX zeolite were calculated. The isotherms of adsorption were quantitatively reproduced by one- two- and three-term VMOT equations from zero filling to saturation. The mechanism of H₂S adsorption in NaX zeolite was described.

 

Toirov Z. K., Ibragimov K. G., Allamuratova A. Zh., Erkayev A. U., Reymov A. M.

Studying of process of decomposition of the Central Kyzyl Kum phosphorites hydrogen nitrate theoretical analysis of system CaO-P₂O₅-N₂O₅-H₂O

Processes of decomposition of a phosphoric flour Central Kyzylkum by 15-160 % norm of nitric acid in the range of concentration of 52-59 % and rheological properties of a being formed pulp are studied. Character influence of norm of nitric acid on рН and salt structure of system is established. It is possible to process the received nitrophosphatic pulps in complex fertilizers with rather high maintenance of nutritious components.

 

 

Shevchenko V. P., Tokunov S. G., Kim R. B., Gulamova D. D., Bobokulov S.

Basalt fiber from mineral raw materials of Uzbekistan – a basis for perspective composites

Warmly - and soundproofing composite panels “the cold” technology of reception is developed for internal furnish of premises on the basis of a basalt fibre and ceramic filler. Use for manufacturing of panels of a raw-material base of Uzbekistan and satisfactory thermo-mechanical properties prove expediency of creation of industrial production of such products.

 

Alimzhanova Zh. I., Kadyrova D. S., Ganiyev M. M., Yusupov M. N.

The weak art faience with use of dolomitic breeds of Uzbekistan

Structures of weights and ceramic pigments of a various shade are developed for reception of soft decorative faience with use of dolomite of the Sypki and Dehkanabad deposit, their physical and chemical properties and phase structure are studied.

 

Erkayeva N. A., Kucharov B. H., Urinova Z.

The cleaning compositions on the basis of hydroxide and a carbonate of a potassium

The solubility of potassium carbonate in the system - potassium hydrate - water at a temperature of -71.2 to 60 ^оC. Built its solubility diagram, in which there are fields of crystallization of ice, and the hexahydrate of anhydrous potassium carbonate, and the four-, two- and monohydrate forms of potassium hydrate. In a system with an increase in temperature is observed increasing salting action components to each other. On the basis of solubility diagrams to study the influence of mass ratio of KOH: K₂CO₃ on the composition and moisture content of the super-alkali.

 

CHEMISTRY AND TECHNOLOGY OF ORGANIC SUBSTANCES

 

Turakulov Zh. U., Azizov T. A., Dusmatova A. D., Haydarov D. M.

Formamidny coordination compounds of lime acetate

Are synthesised formamide coordination connections of calcium acetate. Set composition, individuality, how coordination of acetate fragments and molecules of formamide, nitrokarbamide, nicotinamide and studied the thermal behavior of complexes.

 

Holboyev Yu. H., Makhsumov A. G., Inakov T. K., Abdurakhmonov U. K., Urmonov A. A.

Synthesis of a derivant of bis amino-aroyl-urea and its probable mechanism of education

A method of synthesis of N,N'-geksametilen bis [(dibenzilamino) urea] and studied its probable mechanism of formation.

 

Ayupova M. B., Komilzhonov N. A., Mirzayev U. M.

The analysis of interaction of complexes of an oksadiksil with polymers spectral techniques of a research

In this work there is studied complex formation of oxadixyl with water-soluble polymers with the help of infrared and ultraviolet spectroscopic methods.

 

TECHNOLOGY OF POLYMERIC AND COMPOSITION MATERIALS

 

Murodov M. M. Technology of receiving KMTs from cotton, rice, wheat and poplar cellulose

Developed the technology of obtaining carboxymethyl cellulose, resistant for the thermal destructure, on the basis of wastes of annual plants and local poplar, studied the effect of anthraquinone and lignin, as inhibitors in obtaining carboxymethylcellulose with high heat resistance. Determined the physicochemical properties of the resulting carboxymethyl cellulose.

 

Halikov M. M., Rakhmanberdiyev G. Receiving Na-cellulose glicollic acid with the raised extent of replacement

Investigated the possibility of synthesizing technical sodium carboxymethyl cellulose with a high degree of substitution. Presented the results of studies of effect of mercerization regimes on the quality of obtained sodium carboxymethyl cellulose.

 

Nurkulov F. N. Studying of structure and properties of polysulphide oligomers

The article deals with a study swelling synthesized polysulfide rubber. The composition and structure of the obtained polysulfide rubbers are proved by IR-spectroscopy and by elemental analysis. Shows that the vulcanizates are resistant to aggressive action and resistance to organic solvents.

 

Eshkurbonov F. B.

Studying of thermal stability of the synthesized complexing ionite and a kinetics of a sorption of some metals

The article contains a process for receiving and checked resistance synthesized chelating ion exchangers to thermal influences.

 

Nuraliyev U. M., Dzhalilov A. T. Physical and chemical properties of the light stabilisers synthesized the oligomernykh on the basis of amino compounds

Physical and chemical properties of oligomers, such as solubility, density, fusion temperature, viscosity and average molecular weight by сryoscopic мethod are investigated.

 

Aripdzhanov O. Yu., Turabzhonov S. M., Nurullayev Sh. P.

Studying of corrosion rate of carbon steel in composition absorbent

Speeds, corrosion of a carbonaceous steel of mark of item 10 with composite absorbents МDEА + DEA + amino compound water-soluble polymer are studied and it is found, that degree of saturation H₂S and CO₂ and temperature substantially is defined its corrosion by properties.

 

Fozilov S.F., Mavlonov B. A., Ataullayev Sh. N.

The mechanism of effect of heterocyclic dispersive additives in solar oil

Principle of operation of depressor additives was studied by low-temperature properties of diesel fuels. Experimental results, the mechanism of action of additives  on the basis of heterocyclic aethers methacrylic acids are presented.

 

Ikhtiyarova G. A., Tadzhikhodzhayev Z. A., Akhmadova D. A., Amonova H. I.

Thickening materials on the basis of carboxymethylamylum and acrylates for stuffing of fabrics

Are studied change рН environments of the traditional and mixed thickeners, printing paints on their basis. And also physicomechanical properties of stuffed fabrics.

 

ECOLOGY

 

Yunusov M. Yu., Babayev Z. K., Atakhanov R. A., Rakhimov U., Yunusova N. R.

Defekat, a withdrawal of sugar production - valuable raw materials for a sewage disposal

Data on a withdrawal of manufacture of sugar - defecate are resulted, its chemical compound, structural features and some physicotechnical properties are studied. Defecate it is recommended as a component of sorption for sewage treatment of the industrial enterprises.

 

FOOD TECHNOLOGY AND BIOTECHNOLOGY

 

Xo'jamshukurov N.A.

Вacillus thuringiensis entomopatogen bakteriyasining fusarium oxysporum zamburug'iga qarshi ta'siri

In the article the analysis of injury-producing fungus Fusarium oxysporium in agriculture and to fight against the fungus entomopathogene the bacteria Bacillus thuringiensis. As a result of research in the fight against the fungus Fusarium oxisporium (for example, infected cotton varieties of Bukhara-6) recommended to use entomopathogene the bacteria Bacillus thuringiensis.

 

Dzhurayev U. H., Mazhidova N. K., Kadirov Yu. K. Some questions of catalytic hydrogenation of cotton oil

The technology of catalytic hydrogenation cotton oil on new kinds nickel-copper suspended catalysts is investigated. Optimum technological modes and parameters of the catalysts updating of oil providing improvement of quality and decrease of the maintenance a trance-isomeric of fat acids in salomases are established. The offered technology has allowed simplifying considerably industrial technology of the catalysts updating of cotton oil.