The ecology of environment nowadays

Jon-exchange ability of the synthetic ceolit

of the type NaA with a purpose

of utilization as remedies of combined action

O. I. Zaitsev, O. B. Zhukovina, V. I. Zhukovina

The National Pharmaceutical Academy

The State Research institute of the basic Chemistry

Ukraine, Kharkiv

Analysis of the pharmaceutical publications and the previous experiments showed possibilities of the receiving combined antimicrobial preparation on the basis of the synthetic ceolit NaA by ionic-exchange of cautions of natrium on the active cautions of medicinal preparation. It is known, tha Continue Reading »

The kinetics of carbon oxidation by oxygen in the presence of carbonates of alkaline metals

G. G. Tsapiuk, V. Ya. Zabuga, V. L. Budarin, V. K. Yatsimirsky

Shevchenko University, Kiev, Ukraine

The carbonates of alkaline metals represent themselves the active catalysts of carbon oxidation. There are contradictory data in the literature as to the mechanisms of their catalytic action.

In this work, the studies aimed at the kinetics of carbon oxidation in the presence of potassium and sodium carbonates have been performed.

The studies have been made by the gravimetry method in the flow-trough conditi Continue Reading »

STUDIES OF ION EXCHANGE EQUILIBRIA

AT LOW- AND HIGH-SILICON

CLINOPTILOLITES INVOLVING Na+, K+ AND Ca2+ IONS

Y. I. Tarasevich, D. A. Krysenko, V. E. Polyakov

A.V. Dumansky Institute of Colloid Chemistry and Chemistry of Water, Ukrainian National Academy of Sciences,

42 Vernadsky Avenue, Kyiv (Kiev) 03680, Ukraine

For a number of low- and high-silicon clinoptilolites possessing different SiO2:Al2O3 and (Na++K+):Ca2+ ratio in the exchange complex, taken from the deposits in Bulgaria, Georgia, Russia, Ukraine and United states, the Continue Reading »

On Dissipation of fracatlity

in Production Batch of Activated Carbon

B. J. Trznadel

Military Institute of Chemistry and Radiometry, 00-910 Warsaw, Poland

Microporous activated carbons are disordered solids derived from a variety of organic precursors by suitable carbonisation and activation processes. The internal surface of activated carbons is very complex from a structural point of view. Moreover, the adsorbent activity is dependent on the magnitude of the internal surface, the pore size distribution and the shape of the pores. The quantitative evaluation of the geometric surface area pl Continue Reading »

Semiconductor and Conductive Polymer NANOStructures Embedded

in Zeolite and Mesoporous Hosts

G. Tel’biz1, O. Shvets1, V. Ill’in1, M. Brodyn2, V. Voznyi2

1Institute of Physical Chemistry, National Acad. Sci. of Ukraine,

252039, prospekt Nauky 31, Kyiv, Ukraine

2Institute of Physics, National Acad. Sci. of Ukraine,

252022, prospekt Nauky 46, Kyiv, Ukraine

Conductive polymers (polyaniline) and semiconductor clusters (CdS, PbI2) have been synthesised in the three- and one-dimensional channels of zeolite FAU, MCM-41 and LTL. Stoichometetric, IR, and absence of Continue Reading »

MODIFYING OF CHARCOALS BY ORGANICAL COMPAUDS

V. K. Yatsimirsky1, J. Silvestre-Alberto2,

A. Sepulveda-Escribano2, F. Rodriguer-Reinoso2,

A. A. Gorlova1, S. V. Mikhalovsky3, V. L. Budarin4

1Kiev Shevchenko University, 64, Vladimirskaya str.,

Kiev, 252033, Ukraine. Email: yats@chem.univ.kiev.ua

2Alicante University, Spain, Email: joaquin.silvestre@ua.es

3Department of Chemistry, University of York, York, Y01 5DD UK

4School of Pharmacy and Biomolecular Science, Univ. of Brighton,

Brighton BN2 4GJ UK

Active carbons in Continue Reading »