About some properties of highly dispersive oxide of a titanium (IV) and adsorption on it
A. M. Ukrainets, M. M. Soltys, V. D. Havryliv, M. M. Jatsyshyn,
I. E. Opaynych, R. Ja. Il\’chyna
Ivan Franko National University
Kyryla and Mefodija si. 8, 79005, L`viv, Ukraine
In this work the outcomes of research of an oxide surface of titanium of rutile modification and adsorption of Atlas G - 3300 (C12H25C6H4SO3Na) on it are submitted. For this purpose have been used TiO2 RCL-2 (corporation Du Pont, USA) with mean radius of fragments 0,23 microns.
Depending on pH of the me Continue Reading »
THE STUDIES OF THE POLAR AND APOLAR LIQUID FILM PROPERTIES ON PURE AND MODIFIED ACTIVATED CARBONS BY MEANS OF THE THERMAL ANALYSIS
P. Staszczuk1, R. Leboda2, D. Glazewski1
1 Department of Physicochemistry of Solid Surface
2 Department of Chemical Physics and Physicochemical Methods of Separation Chemistry Faculty Maria Curie-Sklodowska Uniervsity
M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
Many researchers investigated the properties of liquid films adsorbed on the surface of activated carbons. Such interest results from certain features accompanying liquid adsorption on activated carbons: Continue Reading »
FROM SUPPORTED METALS TO COVALENTLY COMPLEXES - THE WAY TO INCREASE CATALYTIC SELECTIVITY
V. N. Zaitsev, V. V. Skopenko, V. D. Oleynik
Department of Inorganic Chemistry T. Shevchenko University,
60 Vladimirskaya str. Kiev, Ukraine.
Selectivity of heterogeneous catalysis is the main question of their application. One method used to increase their selectivity is to surround the supported metal with ligand environments. However, limited degrees of freedom do not allow substantial improvement in selectivity. A new generation of heterogeneous catalysis that involved immobilized complexes where cataly Continue Reading »
STABILIZATION OF DISPERSIONS BY THE SURFACTANTS
AND POLYMERS
M. M. Soltys, Z. M. Yaremko, V. D. Havryliv
Ivan Franko National University of L’viv, Chemical Department,
Kyryla & Mefodiy Str. 6, L’viv, 79005, Ukraine, e-mail: soltys@franko.lviv.ua
The aggregate stability of aqueous dispersions depends significantly on distribution of counter-ions around charged colloid particles.
Distribution of low-molecular counter-ions in diffuse part of a double electrical layer depends on the nature and concentration of electrolytes and is define Continue Reading »
BIOSORPTION PROCESS ONTO POROUS
POLYMERIC SORBENTS
V. V. Pidlisnyuk, R. M. Marutovsky
Center for Ecological Research and Sustainable Development, Kyiv, Ukraine
E-mail: pidlis@carrier.kiev.ua
Scientific aspects and technological usage of biosorption processes are extremely actual now. The development of an effective technology demands complex approaches and the joint use of the theoretical and practical aspects. The biosorption characteristics are very much depend of the degraded organic substance properties, the adsorbent nature and structure and the involved microorganisms properties .It was Continue Reading »
A Theoretical Study of Environment Influence
on a Cluster of the Iron-Chromium Alloy
V. Pokhmurskii, V. Kopylets, S. Kornii
Karpenko Physico-Mechanical Institute
of the National Academy of Sciences of Ukraine,
5, Naukova St., 79601, Lviv, MSP, Ukraine
We have developed a cluster model of iron-chromium alloy (simulation of 20X13 stainless steel). Quantum-chemical calculations allowed to explain the effect of its selective dissolution in acid water solution of sodium chloride.
Elastic deformation rangind from 0.5% to 2.0% leads to essential decrease of activation ad Continue Reading »