SOLID STATE COMPLEXES OF ZINC (II) WITH CEFAZOLIN
AND CEFOTAXIME
M.N. Mayakova, V.G. Alekseev, A.I. Ivanova, S.S. Ryasensky
Tver State University
Department of inorganic and analytical chemistry
When reacting aqueous solutions of zinc chloride and sodium salts of cefazolin (NaCzl) and
cefotaxime (NaCxm) prepared and isolated in solid state zinc complexes of cefazolin and cefotaxime
composition Zn(Czl)2·H2O and Zn(Cxm)2·H2O. Complexes sparingly soluble in water and in ethanol.
The compounds were studied by IR spectroscopy, electron microprobe analysis and thermal TG / DSC
analysis. The resulting complexes are chelating structure.
Keywords: coordination compounds of zinc, cefazolin, cefotaxime, cefazolin complexes, complexes of
cefotaxime, cephalosporin.
THE GAS SENSOR BASED ON POLYANILINE
S.S. Ryasenskii , I.I. Rybakov, B.A. Kustarev
Tver State University
Department of inorganic and analytical chemistry
The possibility of the use of polyaniline films for determination of the content of nitrogen dioxide and
carbon dioxide in the air.
Keywords: sensor, polyaniline, conductive polymer
POLYANILINE AS ADSORBENTS CATIONS
Cu2 +, Zn2 +, Co2 + FROM SALT SOLUTIONS
S. S. Ryasenskii, D.V. Vasilyeva
Tver State University
Department of inorganic and analytical chemistry
A possibility of using polyaniline for adsorption of cations from solutions of the corresponding salts.
Keywords: conducting polymers, polyaniline, adsorption
ACID-BASE BALANCE AND THE FORMATION OF COMPLEXES OF BIOMETALS
WITH BETAXOLOL
M. A. Feofanova, V.V. Novikova, I.S. Tsvetkova, N.V. Baranova,
M. N. Barinova
Tver state University
Department of inorganic and analytical chemistry
Methods pH-metry investigated acid-base balance and interaction processes anaprilina with ions Ca2+
and Mg2+ in aqueous solution at 37°C with the background of 0.15 M NaCl. Found education complex
shapes of different composition and sustainability. Defined constants of stability of complexes and
ecological feasibility study.
Key words: acid-base equilibrium, biometals, betaxolol, equilibrium constants, complexation.
WORKING FEATURES OF THE MEMBRANE OXYGEN SENSOR IN INCUBATION
MEDIA WITH DIFFERENT
CONTENTS OF SALTS
M.V. Miniaev, M.B. Belyakova, N.V. Kostiuk,
D.V. Leschenko, T.A. Fedotova
Tver State Medical University
Research Centre
Department of Biochemistry
The effect of incubation media with different osmotic pressure on the work of the closed oxygen
sensor, containing a solution of KCl (60 g / l) as an electrolyte, was studied. It was found that at usage
of media, which osmotic pressure exceeds as well as not reaching the osmotic pressure of the sensor
electrolyte, it was observed an increase in response time, relative error of measurement and coefficient
of variation of measured values. The most significant deviations were observed during measurements
in distilled water.
Key words: oxygen sensor, Clark electrode, the diffusion layer, osmotic pressure of, oxygen
consumption, error of measurement.
INFLUENCE OF COMPLEX COMPOUNDS – DERIVATIVES OF SUCCINIC
ACID AND THEIR BORATE COMPLEXES ON THE SOIL MICROFLORA
T.I. Smirnova, O.V. Smirnova
Tver State Agricultural Academy
Department of Agrochemistry and Agriculture
In field experiments we have studied the influence of foliar treatment of cultivated plants
with solutions of ethylenediaminedisuccinic acid (EDDS), iminodisuccinic acid (IDS),
ethylenediaminetetrasuccinic acid (EDTS) taken for comparison, their borate complexes: BEDDS, B-IDS, B-EDTS respectively. Accordingly to the level of microbial carbon in the soil
we have found that solutions of EDDS and EDTS with concentration 1.5·10-3 mol/l taken as
100 ml/m2 have a dampening effect on microorganisms. Solutions with the same
concentration of IDS and borate complexes of all three complex compounds have a
stimulating effect.
Keywords: ethylenediaminedisuccinic acid, iminodisuccinic acid, ethylenediaminetetrasuccinic
acid, borate complexes, soil microflora.
COLLOIDAL SYNTHESIS OF ZINC SULFIDE NANOPARTICLES IN THE
PRESENCE OF SURFACE-ACTIVE SUBSTANCES
AND AN IONIC LIQUID
O.E. Zhuravlev, I.A. Presnyakov, L.I. Voronchihina
Tver State University
The authors propose a method of synthesis a semiconductor nanoparticles salt of zinc sulfide – «quantum
dots» with surface active substances and ionic liquids - tetrafluoroborate N-decylpiridinium.
Keywords: quantum dots, ionic liquids, surface active substances.
ELECTRON STRUCTURE OF RADICAL TAUTOMERS
OF THIOCARBOXYLIC ACIDS
N.P. Rusakova 1, V.V. Turovtsev 1, 2, Yu.D. Orlov 1
1
2
Tver State University
Tver State Medical University
In the framework of "quantum theory of atoms in molecules» (QTAIM) the electron structure of
radical tautomers of a homologous series of thiocarboxylic acid (CH3(CH2)nCH●COSH, where 0 ≤ n ≤
7) was studied. Parameters of transferable groups were determined. The inductive influence of
CH●COSH fragment was revealed. A qualitative scale of groups electronegativity (χ (R)) for the
CH3(CH2)nCH●COSH was constructed and compared with the scale of χ(R) in molecules Alk-COSH.
Keywords: electron properties, electronegativity, thiocarboxylic acids, inductive effect, radical center
THE DEVELOPMENT OF A HYBRID MODEL FOR THE SIMULATION OF
COMPOSITES BASED ON POLYMERS
AND ALUMINOSILICATE HALLOYSITE NANOTUBES
P.V. Komarov1,2 and V.A. Ivanov3
1
Tver State Unuversity
INEOS RAS, Moscow
3
Moscow State Unuversity
2
The problems of constructing of large-scale model of composites based on polymers and
aluminosilicate nanotubes in order to predict the spatial distribution of the filler in the early stages of
material formation have been considered. To carry out test simulations, mixture of 3,4epoxycyclohexylmethyl- 3,4- epoxycyclohexanecarboxylate as resin monomers and 4methylhexahydrophthalic anhydride as curing agents has been used.
Keywords: nanocomposites, nanoparticles, computer simulations
THERMAL CAPACITY OF ALKINES.
NUMERAL CALCULATIONS AND MAIN REGULARITIES
M.G. Vinogradova, A.M. Zherikhova
Tver State University
Department of physical chemistry
Numerical calculations of thermal capacity of alkines are given. Predictions are made. Results of
calculations will be coordinated with experiment. Certain regularities are revealed.
Keywords: thermal capacity, interaction of atoms, numerical calculations.
ENERGY CHARACTERISTICS OF SILICON ORGANIC COMPOUNDS
P.N. Krylov, M.G. Vinogradova, Yu.G.Papulov
Tver State University
Department of physical chemistry
Numerical calculations of thermal capacity of the energy characteristics of of silicon organic
compounds are given. Predictions are made. Results of calculations will be coordinated with
experiment. Certain regularities are revealed.
Keywords: thermal capacity, interaction of atoms, numerical calculations
FISHER–TROPSCH SYNTHESIS FOR LIQUID HYDROCARBONS PRODUCTION
A.A. Stepacheva, I.I. Mutovkina. A.V. Gavrilenko, M.G. Sulman,
Yu.V. Lugovoy
Tver State Technical University
This work is devoted to the study of catalysts used in Fisher–Tropsch synthesis. In current paper a
review of the processes of liquid hydrocarbons production was done. The influence of catalysts and
reaction conditions on molecular-weight distribution of reaction products was studied. The study
allows developing the new effective methods for syn-gas processing to liquid fuels.
Key words: syn-gas, Fisher-Tropsch synthesis, molecular-weight distribution
D-MALTOSE HYDROGENATION USING RU-CONTAINING POLYMER CATALYST.
THE MATHEMATICAL MODELING OF THE PROCESS
M.E. Grigor’ev, U.R. Akhmetzyanova, D.Yu. Murzin, M.B. Lebedeva, M.G. Sulman, V.Yu.
Doluda
Tver State Technical University
Dept. of Biotechnology and chemistry
The aim of the work was the mathematical modeling of the kinetic of D-maltose
hydrogenation process using Ru-containing polymer catalyst. In the result of the kinetic
experiments the analysis of the conversion of initial components to products was done; the
mechanism of hydrogenation reaction was established; the model of the process which meets
the results of kinetic study was founded.
Ключевые слова: catalysis, hydrogenation, D-maltose, mathematical modeling, mechanism of
Langmuir-Hinshelwood.
CHARACTERIZATION OF ZEOLITES BETA AND MESOPORE STRUCTURES
МСМ-41 AND МСМ-48 FOR THE ISOMERIZATION OF VERBENOL OXIDE
A. S. Torozova1, E.M. Sulman1, P.V. Sinitsyna1,
P. Mäki-Arvela2, D. Yu. Murzin2
1
Tver State Technical University
Department of biotechnology and chemistry
2
Åbo Akademi University, Turku, Finland
This paper presents the results of a study of Beta zeolites and MCM- materials for the verbenol
epoxide isomerisation. The target product is trans -diol ((1R, 2R, 6S) -3-methyl-6-(prop-1-en-2-yl)
cyclohex-3-ene-1,2-diol) having a high anticonvulsant activity. The results of pyridine
adsorption/desorption, nitrogen sorbtion and transmission electron microscopy are given.
Keywords: zeolites, isomerisation, verbenol oxide, anticonvulsant activity
WAYS OF LIGNIN PROCESSING WITH BIO OIL OBTAINING
E.I. Shimanskaya, E.M. Sulman, A.A Stepacheva, Yu.М. Lugovoy, L.Zh. Nikoshvili
Tver State Technical University
Department of Biotechnology and Chemistry
This article examines the processes of hydrogenolysis and oxidation as an alternative to the pyrolysis
of lignin during processing to produce bio.
Keywords: lingnin, hydrogenolysis, hydrotreating, oxidation, pyrolysis.