The composition, structure and morphology of particles of β-and α2-fraction powders of medium-temperature coal tar pitch were studied using the methods of electron microscopy, adsorption porosimetry, NMR, IR-EPR spectroscopy, X-ray diffractometry, thermal analysis, and chromatography-mass spectrometry. The morphology and structure of coke residues were investigated depending on the heating temperature. It has been established that polyaromatic hydrocarbons in the composition of volatile products of thermolysis of coal tar pitch are formed mainly during the decomposition of the β-fraction components. The results obtained are of interest from the point of view of the directions of using the isolated fractions of coal tar pitch as precursors for obtaining functional carbon materials.
The new technique for the TiO2photocatalyst manufacturing with titanium tetrachloride alcoholic solution using was revealed. The ammonium titanate precursor was precipitated by double-jet method with TiCl4alcoholic and ammonium aquatic solutions using. The TiO2nanopowders were prepared by precursors calcinations at 400, 500, 600, 700 and 800°C. The photocatalytic activity determination was made by the way of dye photodegradation technique (methyl orange). The difference in adsorption ability of TiO2dispersion reference to organic dyes was found. The conditions for the synthesis of TiO2anatase effective photocatalyst synthesis were revealed.
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