CHEMICAL TECHNOLOGY (inorganic and organic substances. Theoretical fundamentals)

NITRILE COMPLEXES AS EFFECTIVE ANTIMICROBIAL ADDITIVES

Antimicrobial properties of nitrile complexes of transition metal salts were studied in-cluding the investigation of their activity in surfactants and mineral oil environments. Exper-iments of the polymeric complexes preparation by in-situ copolymerization of the nitrile pol-ymers in the presence of transition metal salts and reactions of transition metal salts added to the ready polymers were performed. The dependence of the polymer complexes forming par-ticularities on central metal atoms nature was determined.

Key words: transition metal salts complexes, polyacrylonitrile, poly(styrene-acrylonitrile), poly(acryl-onitrile-butadiene-styrene), ab initio calculations, thermodynamic parameters

REFERENCES
1. Gabrielyants G.А. Geology of the oil and gas fields. М.: Nedra. 2003. 285 p. (in Russian).
2. Safiullina I.I., Dubinina A.E., Babaev E.R., Movsumzade E.M. // Neftepererabotka I neftekhimiya. Scientific and technical achievements and advanced experience. 2015. V. 11.

2016, Т. 59, № 5, Стр. 81-89

INFLUENCE OF SURFACE HEATING TEMPERATURE ON EXTERNAL HEAT-EXCHANGE IN WET VIBRO-FLUIDIZED BED

Experimental data are given on the influence of the temperature of the heating sur-face, placed to a wet vibro-fluidized bed of non-porous particles, and higher that the satura-tion temperatures on the external heat-transfer coefficient at conductive supply of the heat.

Key words: vibration, disperse material, volumetric wetness, external heat-exchange, saturation temperature

REFERENCES
1. Chlenov V.A., Mikhaiylov N.V. The drying of the loose material in the vibrofluidized bed. M.: Stroiyzdat. 1967. 224 p. (in Russian).
2. Varsonof'ev V.D., Kol'man-Ivanov E.E. The vibrating techniques in the chemical industry. M.: Khimiya. 1985. 240 p. (in Russian).
3. Karmazin V.D. The techniques and application of the vi-brofluidized bed. Kiev: Naukova dumka. 1977. 239 p. (in Russian).
4. Sazhin B.S., Kochetov O.S., Sazhin V.B. RF Patent 2312285. 18.07.2006. (in Russian).
5. Sazhin B.S., Kochetov O.S., Sazhina M.B. RF Patent 64747. 18.07.2006. (in Russian).

2016, Т. 59, № 5, Стр. 77-80

METHOD FOR DETERMINING QUASI INVARIANTS IN KINETICS OF CHEMICAL REACTIONS

A method was developed for determining the approximate kinetic relations (quasi-invariants), which connect equilibrium constants of multi- step reactions with reagent concen-trations measured in several non-stationary experiments (multi-experiments). With this meth-od use the quasi-invariants were defined for the oxidation reaction of carbon monoxide pro-ceeding through different mechanisms.

Key words: chemical reactions, step schemes, conservation laws, quasi-invariants, multi-experiments, stratification rule, equilibrium constants

REFERENCES
1. Korzukhin M.D. // Zhurn. Fizich. Khim. 1972. V. 46. N 7. P. 1845 (in Russian).
2. Alekseev B.V., Koltsov N.I., Fedotov V.Kh. // Zhurn. Fizich. Khim. 1992. V. 66. N 12. P. 3219 (in Russian).
3. Koltsov N.I., Alekseev B.V., Fedotov V.Kh. // Zhurn. Fizich. Khim. 1988. V. 2. N 11. P. 3069 (in Russian).
4. Yablonsky G.S., Constales D., Marin G.B. // Chem. Eng. Sci. 2011. V. 66. P. 111.

2016, Т. 59, № 5, Стр. 72-76

OXIDATION OF METHANOL TO FORMALDEHYDE AT INDUSTRIAL CONDITIONS USING VARIOUS IRON-MOLYBDENUM CATALYSTS

The comparative analysis of operation results of two iron-molybdenum catalysts of foreign production F-1 and F-2 on an industrial large-capacity formaldehyde synthesis unit, consisting of two tubular reactors connected in series, was carried out. Variants of catalysts loading were presented and analysis of data on "hot spot" movement on the catalyst layer of the semi-annual period of reactors operation was carried out. The regularities of changes in the activity and selectivity of catalysts under consideration were examined at the beginning and end of the operation period.

Key words: methanol, formaldehyde, iron-molybdenum catalyst, activity, selectivity, tubular reactor

REFERENCES
1. Nakrokhin B.G., Nakrokhin V.B. The technology of pro-duction of formaldehyde from methanol. Novosibirsk. 1995. 444 p. (in Russian).
2. Ogorodnikov S.K. Formaldehyde. L.: Khimiya. 1984. 280 р. (in Russian).

2016, Т. 59, № 5, Стр. 65-71

STUDY OF PURIFICATION PROCESS OF VEGETABLE OIL BY PINK CLAY

The phase composition of natural pink clay was studied and influence of sorption properties on purification of mustard oil was investigated. The clay was activated by treat-ment with oxalic acid and sodium carbonate before using. The acid-base activation of natu-ral material was shown to promote the creation of the new centers on its surface. The new materials demonstrated a positive effect on the oil purification process from fatty acids, per-oxide compounds and no effect on the concentrations of carotenoids.

Key words: pink clay, activation, oxalic acid, sodium carbonate, mustard oil

REFERENCES
1. Razgovorov P.B., Sitanov S.V., Kozlov V.A. // Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2002. V. 45. N 1. P. 34-37 (in Russian).
2. Razgovorov P.B., Sitanov S.V., Prokofiev V.Yu., Smirnov K.V. // Khimiya rastitelnogo syriya. 2007. V. 4. N 6. P. 111-116 (in Russian).

2016, Т. 59, № 5, Стр. 59-64

HYDRATION STUDY OF PORTLAND CEMENT MINERALS IN LIMY-SULFUR TEMPERE

The interaction of minerals of the Portland cement (alit, belit, alyumoferrite) was studied with a limy-sulfur tempere. Higher SiO2 content in a liquid phase was established at hydration as well as hydration process acceleration. The strength of cement materials could be increased by 20-40% at application of such tempere with sulfur concentration of 180 g/l.

Key words: Portland cement, clinker minerals, alit, belit, alumina ferrite, redox potential, me-chanical strength

REFERENCES
1. Guvalov A.A. // Tekhnika i tekhnologiya silikatov. 2011. V. 18. N 3. P. 24-27 (in Russian).
2. Spitatos N., Раgе М., Mailva nam N. Superplasticizers for concrete: fundamentals, technology and practice. Quebec. Canada. 2006. 322 p.
3. US Patent 4193811 USA. C04B7/02.Publish. 18.03.1980. N 4. P. 12-14.
4. US Patent 4198245. C04B7/02. Publish. 15.04.81. N 5. P. 10-12.
5. US Patent 4193809. C04B7/02. Publish. 18.03.82. N 4. P. 20-22.

2016, Т. 59, № 5, Стр. 54-58

BIOTEMPLATED SYNTHESIS OF ALUMINA FIBRES BY CONTROLLED HYDROLYSIS OF SALT PRECURSOR

Alumina fibres were obrained by impregnation of the cellulose biotemplate with pre-cursor solutions in which the hydrolysis ratio [OH-]/[Al3+] is varied and in which different al-uminium oligo- and polycations content. The biotemplates and alumina fibres were studied by X-ray, TG/DSC, electrophoretic light scattering, SEM, and N2 adsorption/desorption. It was shown that the infiltration with the precursor did not affect the cellulose structure. The possibility to vary the surface area, pore size and pore volume of the ceramic fibres by con-trolled hydrolysis of aluminum was demonstrated.

Key words: aluminium oligo- and polycations, biotemplated synthesis, alumina fibres

REFERENCES
1. Grashchenkov D.V., Balinova Yu.A., Tinyakova E.V. // Glass and Ceramics. 2012. V. 69. N 3. P. 130 133.
2. Bunsell A.R., Berger M.H. // J. Eur. Cer. Soc. 2000. V. 20. N 13. P. 2249 2260.

2016, Т. 59, № 5, Стр. 47-53

METHOD OF CALCULATION OF PRODUCTIVITY AND POWER OF ROLL DEVICE WITH THE REGIME OF BACKUP

On the basis of the model of the process of movement and compaction of disperse mixtures in the roll gap after medium backup with a horizontal screw feeder the method of determination of integral characteristics of roller machine depending on the porosity of the working medium, its rheological properties and the structural and regime parameters of the designed device was proposed.

Key words: disperse material, productivity, drive power, roll device, compacting, backup pres-sure, porosity, Coulomb’s modified low

2016, Т. 59, № 2, Стр. 83-86

MODIFICATION OF ALUMOSILICATE H-ZSM-5 AND INVESTIGATION OF ITS CATALYTIC ACTIVITY IN TRANSFORMATION PROCESS OF METHANOL...

MODIFICATION OF ALUMOSILICATE H-ZSM-5 AND INVESTIGATION OF ITS CATALYTIC ACTIVITY IN TRANSFORMATION PROCESS OF METHANOL TO HYDROCARBONS

In given article the results of studies of modified alumosilicate H-ZSM-5 catalytic activity in transformation process of methanol to hydrocarbons are described. The results of physicochemical characterization of modified H-ZSM-5 samples by ammonium chemisorption, XPC, nitrogen phisisorption and TEM are presented. The dependence of activity of modified alumosilicate H-ZSM-5 on its structural characteristics was shown.

Key words: alumosilicate, H-ZSM-5, methanol transformation to hydrocarbons

2016, Т. 59, № 2, Стр. 79-82

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