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Sulfur retention by ash during coal combustion. Part II. A model of the process
(Journal of the Serbian Chemical Society, 2003)
An overall model for sulfur self-retention in ash during coal particle combustion is developed in this paper. It is assumed that sulfur retention during char combustion occurs due to the reaction between SO2 and CaO in the ...
The role of titanium oxide concentration profile of titanium oxide of RuO2-TiO2 coatings obtained by the sol-gel procedure on its electrochemical behavior
(Journal of the Serbian Chemical Society, 2003)
In order to understand the rule of TiO2 in the deactivation mechanism of an active RuO2-TiO2 coating, an additional TiO2 laver was introduced in the support\coating interphase of regular Ti//[RuO2-TiO2] anode in one case ...
Macromechanical characteristics deduced from three-point flexure tests on unidirectional carbon/epoxy composites
(Mechanics of Composite Materials, 2003)
Effects of different factors on the measured values of flexural modulus and flexural strength of unidirectional carbon/epoxy composites are investigated. This allows a correct interpretation of the results of flexural ...
Immobilization of Cs-137 and Co-60 in concrete matrix
(Annals of Nuclear Energy, 2003)
To assess the safety for disposal of radioactive waste-cement-bentonite composition, the leaching of Cs-137 and Co-60, from a waste composite into a surrounding fluid has been studied [Burns, R.H. Atomic Energy Rev. 9 ...
Actinide analysis of a depleted uranium penetrator from a 1999 target site in southern Serbia
(Journal of Environmental Radioactivity, 2003)
Following the detection of U-236 in depleted uranium (DU) ammunition used during the Balkans conflict in the 1990s, concern has been expressed about the possibility that other nuclides from the nuclear fuel cycle and, in ...
Influence of vacancies on the static and dynamic properties of monoatomic liquids
(Physica B: Condensed Matter, 2003)
The structure of monoatomic liquids is assumed to consist of the. normal substructure and defect substructure. The oscillatory motion of atoms in the normal substructure with the nearest-neighbour. distance R-ns is ...
Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst
(Electrochimica Acta, 2003)
Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample ...
Leaching of Cs-137 from spent ion exchange resins in cement-bentonite clay matrix
(Acta Chimica Slovenica, 2003)
The leaching rate of Cs-137 from the spent cation exchange resins in cement-bentonite matrix has been studied. The solidification matrix was a standard Portland cement mixed with 290350 (kg/m(3)) spent cation exchange ...
Sulfur retention by ash during coal combustion. Part I. A model of char particle combustion
(Journal of the Serbian Chemical Society, 2003)
A model for the combustion of porous char particles as a basis for modeling the process of sulfur retention by ash dining coal combustion is developed in this paper. The model belongs to the microscopic intrinsic models ...
Preparation of basalt-based glass ceramics
(Journal of the Serbian Chemical Society, 2003)
Local and conventional raw materials-massive basalt from the Vrelo locality on Kopaonik mountain-have been used as starting materials to test their suitability for the production of glass-ceramics. Crystallization phenomena ...