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Information × Registration Number 0226U000239, (0124U000204) , R & D reports Title Conversion of glycerol (waste of biodiesel production) under the conditions of hetero- and homocatalysis in reactions of acetalization, acylation and oxygen oxidation popup.stage_title Модифікація сірчаною кислотою природних бентоніту, кліноптилоліту та трепелу і напрацювання дослідних зразків відповідних каталізаторів. Дослідження механізмів та особливостей (кінетика, селективність, конверсія) перетворень гліцерину та його похідних в реакціях ацеталізації, ацилювання у присутності отриманих гетерогенних каталізаторів у перспективні сполуки з корисними властивостями. Оптимізація основних факторів, що визначають активність та селективність досліджених каталізаторів. Head Yavolovskyi Arkadii O., Доктор хімічних наук Registration Date 07-01-2026 Organization Physico-Chemical Institute O. Bogatsky National Academy of Sciences of Ukraine popup.description1 Development of scientific (and applied) aspects of use the N-hydroxyphthalimides and their derivatives as selective homogeneous catalysts of aerobic oxidation, also natural bentonite, clinoptilolite and trepel modified with sulfuric acid in reactions of glycerol acetalization, acylation and its derivatives (esters, ethers, carbonates, acetals, ketals, etc.) in so-called "low-tonnage products", which are promising as additives for motor fuels, pharmaceuticals, cosmetics, food industry, also for combinatorial chemistry as semi-products, synthons, etc. popup.description2 Objects of research – natural aluminosilicates modified with sulfuric acid, glycerol and its catalytic transformations. Aim of work – develop scientific aspects of use N-hydroxyphthalimides and their derivatives as selective homogeneous catalysts of aerobic oxidation, also natural bentonite, clinoptilolite and trepel modified with sulfuric acid in reactions of glycerol acetalization, acylation and its derivatives (esters, ethers, carbonates, acetals, ketals, etc.) into so-called "low-tonnage products" that represent prospects as additives for motor fuels, pharmaceuticals, cosmetics, food industry, also for combinatorial chemistry as semi-products, synthons, etc. Research methods – gas-liquid chromatography. In reaction of GL with Ac, the main product is solketal (>95%). The influence of catalyst mass fraction, reaction temperature, and molar ratio on GL conversion and initial rate of its consumption was studied. It was found that H-Bent is more active among studied catalysts. The concentration order of GL in presence of H-CLI is impractical to determine, since this sample catalyzes process in a narrow range of (two) concentrations. In presence of H-Bent, the order is one, and in presence of H-Tr – two. In reaction of GL with AA, it is not possible to say unequivocally about predominant activity one of catalysts. Due to different chemical and phase composition, crystallinity and heterogeneous porous structure, catalysts show similar catalytic activity. In the reaction of GL with CHone, the main product is (1,4-dioxaspiro[4,5]decan-2-yl)methanol (99%). H-Tr withstands two cycles, H-Bent three cycles, while H-CLI proved to be more resistant to loss of its catalytic activity and withstood six cycles. In the reaction of GL with BA, five- and six-membered cyclic acetals are formed: the cis configuration of five-membered acetal, also the cis and trans configurations of six-membered acetal. The selectivity of reaction products doesn’t change. Product Description popup.authors Arkadii О. Yavolovskyi Levchenko Olha O. Kylymenchuk Olena D. Derkach Larysa G. Davtian Araksia S. Zlatov Yevhen V. popup.nrat_date 2026-01-07 Close