CHEMISTRY AND CHEMICAL ENGINEERING

KIMYO VA KIMYO TEXNOLOGIYASI

TECHNOLOGY OF INORGANIC SUBSTANCES AND MATERIALS

 

Hovsepyan A.H. Obtaining of molybdenum disilicide from sulphide concentrates of molybdenum by the method of selfpropagating high-temperature synthesis

The process of obtaining molybdenum disilicide from hydrometallurgical concentrate of molybdenum and silicium by the method of self-propagating high-temperature synthesis (SHS) is studied. It is revealed that molybdenum disilicide is obtained as a result of burdening followed by pressing and synthesis by SHS method.

 

Erkaev A.U., Kaipbergenov A.T., Kucharov B.H., Toirov Z.K.

Research of process of receiving sodium sesquicarbonate in the liquid-phase method

The process of producing sodium sesquicarbonate liquid phase method in the presence of sodium chloride. The optimal conditions for conducting the process and studied the rheological properties of intermediate and final products. Compiled the material balance of the process.

 

Mkrtchyan R.V., Aripova M.H., Dosmukhamedov T.V.

IK spectroscopic research of glasses on the basis of natural raw materials and waste of the industry

Investigated the IR spectrums of glasses based on steel slag and ash wastes of production of medical ampoules, pegmatite, quartz sand, dolomite and chalk. Differences in cationic and anionic glass structures determine the ability of glass to spontaneous crystallization during subsequent heat treatment.

 

CHEMISTRY AND TECHNOLOGY OF ORGANIC SUBSTANCES

 

Azamatov U.R., To‘rayev N.A., Kadirov X.E., Turabjanov S.M.

Obtaining composite inhibitors with zincateoxyetylendiphosphonic acid

The process of obtaining zincate-oxyetylendiphosphonic acid with inisators (polyhydric alcohols) has been studied. The product yield was 98 % and purity was at least 99,8 %. On the basis of the obtained zincate OEDP acid, distillation recidue of vacuum distillation of monoethanol amine, poliaminokrotonol and an extraction of phosporic acid compositions have been obtained and their inhibitory properties have been defined. Thus it has been determined that effectiveness of the obtained inhibitor makes not less than 90 %.

 

Ziyadullayev O.E. Synthesis of aromatic acetylene alcohol organomagnesium compounds

Synthesized aromatic acetylenic alcohols (AAA) reacting phenylacetylene and croton aldehyde, as well as some ketones based organomagnesium compounds. Scientifically proven influence of various factorsthe molar ratio of the starting materials, temperature and the nature of the solvent on the yield.

 

Khodjaeva F.A., Maksumova О.S. Synthesis of esters of liquid olefins

Etherification reaction between acrylic acid and isomers of hexane has been studied on this work.

The different factors to the reaction has been studied: temperature, ratio and characters of reagents and katalizators. In the results, we have determined the process optimal condition. The structure of taken complex ether has been accepted by IR-spectral method of implementation.

 

Khodjaev Kh.O., Shabilolov A.A., Khodjaev O.F.

Mixture – ligand coordinated compounds on the base of oxybenzoates of metals and amino acids

In this work results by synthesis of mixture – ligand coordinated compounds of oxybenzoates of nickel, cobalt coppez, manganese with glycine are presented. Quantum – chemical calculations of the reaction abbility of metoxybenzoic acid and glycine were carried out. The passible methods of ligands coordination were shown which were experimentally confirmed by results of some spectroscopical investigations.

 

Kadirova Z. C., Hidirov Sh.A., Strizhevskaya A.A., Aripov J.

Electronic structure of photoactive complexes of oxalic acid with iron

The electronic structure and the ions distribution in the solution of photoactive ferrioxalate complexes were calculated. The most active complexes are [FeIII(C2O4)3]3- и [FeIII(C2O4)2]- , which are determined the photocatalytic activity of the iron oxide-oxalic acid system in the reactions of oxidation and mineralization of organic dyes.

 

CHEMICAL-METALLURGICAL PROCESSES

 

Mansurov Yu.N., Kadirova D.C., Aripova D.C., Buravlyeva A.A.

Studying of diagrams of the condition of systems on the basis of precious metals for reception of hi-tech alloys

The diagrams of a condition of systems Au - Ag, Cu, Pt, Pd are studied for the purpose of reception Hi-tech alloys, definitions of areas of their homogeneity, and also researches of mechanical, electrophysical and chemical properties, definitions of degendence durable characteristics, firmness to wearing awau from structure.

 

PROCESSES, APPARATUS, MODELING

 

Rakhmatkariev G.U., Abdurakhmonov I.B., Rakhmatkarieva F.G.

Differential heats of benzene adsorption in NaY zeolite

Isotherm and differential heats of benzene adsorption in the NaY zeolite were measured at 303K. The isotherm of adsorption was quantitatively reproduced on the basis of VOM theory. The detailed mechanism of benzene adsorption in NaY zeolite from zero filling to saturation was discovered.

 

Yusupova L. A., Nurmanov S.E. Mirhamitova D.Kh., Ikramov A., Mamarizayev Sh.B.

Modeling of a butin-2-diol-1,4 of process of vinylation

Reaction of butin-2-ol with acetylene was investigated. Mathematical treatment of the obtained data was carried out. The mathematical formula of this process was determined and also it was shown that the obtained experimental data were colincided with theoretical data.

 

Rakhimov R.H. Design features of the isothermal furnaces

The article is devoted to the analysis of factors affecting the uniformity of temperature in furnace design for various purposes. The article considers the oven with electrical power.

 

Hayitov R.R., Narmetova G.R. Research of physical and chemical properties adsorbents used for improvement of quality of mineral oil and petrochemistry reagents

With use of various physical and chemical methods are investigated sorption properties adsorbents used for improvement of quality of mineral oil and petrochemistry reagents.

 

Baltabayev U.N., Tursunkhodzhayev P.M.

Mathematical modelling of technological process of production of compound feeds

Studied process with the production of animal feed based on mathematical modeling. Based on the results of studies was to improve the process flow diagram which includes the production of feed barley for peeler and additional node to ensure the continuity of the node “doser - mixer” allows the use of fish meal.

 

Suvanova F.U.

Development of mathematical subsystem models of technological lines of hydrogenisation production

In the article is studied technological lines of hydrogenisation production, is offered their categorization and decomposition on the number of independent subsystems, is designed their steady-state models and on their base are chosen optimum technological modes of saturation cotton oil and miscеll.

 

FOOD TECHNOLOGY AND BIOTECHNOLOGY

 

Dzhakasheva M.A., Kedelbayev B.Sh., Ermukhanbetova R.A., Tashmukhamedov M.S.

Selecting producers of pectolytic enzymes

As highly active producers of pectinase proposed strains of A. foetidus General pectolytic activity of 0.30 u/ml A. niger with pectolytic activity of 0.25 u/ml and A. awamori General pectinase activity of 0.22 u/ml.

 

Khujamshukurov N.A., Davranov K., Agzamova Kh.

Developing the process of draining bacterial preparation

Protectors that protect cells when exposed freezing-defrosting, and is effective in the liquid nitrogen and PEO-400 storage bacilli, promoting stabilization of the biological properties of Bacillus thuringiensis var.thuringiensis. The results obtained can be used in the cryopreservation of this group of bacteria which are hitherto most effective entomopathogenic microorganisms.