Institute for Sorption and Problems of Endoecology NAS of Ukraine

Kiev, Ukraine

Institute for Sorption and Problems of Endoecology NAS of Ukraine

Kiev, Ukraine
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Sydorchuk V.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Khalameida S.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Zazhigalov V.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Skubiszewska-Ziba J.,Maria Curie Sklodowska University | And 2 more authors.
Applied Surface Science | Year: 2010

Influence of mechanochemical activation on porous structure and surface properties of porous and non-porous silicas in air, water and ethanol has been studied. Milled samples have been investigated with help of nitrogen adsorption-desorption, mercury porometry, thermogravimetric analysis, FTIR and ESR spectroscopy. It has been revealed that destruction of porous structure of silicagel at dry milling and, on the contrary, formation of porous silica from non-porous powders (aerosils) during treatment in liquid media occurs. © 2010 Elsevier B.V.


Janusz W.,Maria Curie Sklodowska University | Khalameida S.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Sydorchuk V.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Skwarek E.,Maria Curie Sklodowska University | And 3 more authors.
Adsorption | Year: 2010

Mechanochemical modification of vanadium phosphates doped with Bi, Zr, Mo has been studied. Milled samples have been investigated by means of XRD, DTA-TG, FTIR, nitrogen adsorption, electrokinetic measurements. It was found that phase composition of the phosphates does not change upon the mechanochemical modification process. Milling in water causes formation of porous materials. Modification of surface results in changes of the electrokinetic and adsorption properties of the milled samples. © The Author(s) 2010.


Sydorchuk V.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Makota O.,Lviv Polytechnic | Khalameida S.,Institute for Sorption and Problems of Endoecology NAS of Ukraine | Bulgakova L.,Lviv Polytechnic | And 3 more authors.
Journal of Thermal Analysis and Calorimetry | Year: 2012

The deposition of molybdenum and vanadium oxides onto fumed silica, titania, and alumina as supports through dry milling has been carried out. The structure of prepared compositions has been investigated by means of XRD, DTA-TG, FTIR, and UV-Vis spectroscopy, nitrogen adsorption. The deposited crystal phases are sufficiently uniformly distributed on support surface. The supported oxides are subjected to dispersion in process of milling to the state of oligomeric or isolated species. Milled bulk and deposited MoO3 (first of all, on alumina) possesses improved catalytic performance in process of epoxidation of 1-octene. Vanadium pentoxide also has higher activity in this process. © 2011 Akadémiai Kiadó, Budapest, Hungary.

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