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Information × Registration Number 0213U002679, 0111U000187 , R & D reports Title Modifying of silicates and oxides for the preparation of materials with controlled hydrophilic-hydrophobic balance, the study of state and structure of modifying layers, adsorbed molecules and ions. popup.stage_title Head Tarasevich Yuri Ivanovych, Registration Date 01-02-2013 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Goal of research - the study of structural-sorption characteristics of organosilicates and hydrophobic-hydrophilic characterisctics of their surfaces. Research objects - adsorbents - natural and modified layer silicates; modifiers - cationic surface-active substances and cationic polyelectrolytes; adsorbates - water, methanol, anionic dyes. Methods of research - quantum chemistry, molecular statistics, photocolorimetry, adsorption calorimetry, X-ray phase analysis, atom-absorption spectrophotometry, gel chromatography, IR- photometry, mathematical processing of experimental data. Equipment - high-sensitive calorimeter Tiana-Calve Ms-70, diffractometer Bruker AXS D8, ІR-spectrometer Perkin-Elmer 325, spectrophotometer Specord IR-75, personal computer. Theoretical and practical results - the interaction of water molecules with the modifying layer of cation-active substance on the kaolinite surface and the hydration of molecular ions in solution are studied. The ion exchange constituent of the cetylpyridinium sorption by Na-vermiculite is analysed. The structural changes of vermiculite caused by the introduction of long-chain organic cation into its interlayer gaps are studied. The chemical modification of kaolinite surface by hydroxoaluminium nanoclusters is performed. The spectral evidence is obtained of the formation of hydrogen bond between the carboxyl groups of fulvic acid and hydroxyl groups of aluminium hydroxocations. Novelty - for the first time ever the heat of interaction between the long-chain organic cation with vermiculite is measured. Using the IR spectroscopy method, the interaction between carbonyl and beta-diketonic groups of fulvo- and humic acids with Lewis acidity centres - co-ordinately unsaturated Al3+ cations of Al13 nanoclusters is shown to exist. Efficiency of implementation - the obtained results enable the purposeful choice of the proper modifier which would enable to control the selectivity of modified minerals with respect to different organic anions. Field of use - environment protection. Product Description popup.authors Іванова Зінаїда Григорівна Ігнатенко Олена Володимирівна Аксененко Євген Володимирович Крисенко Дмитро Анатолійович Поляков Валерій Омелянович Трифонова Марина Юріївна popup.nrat_date 2020-04-02 Close