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Information × Registration Number 0221U106966, 0121U110419 , R & D reports Title Conversion of carbohydrates on solid catalysts into chemical compounds used in the production of biopolymers popup.stage_title Head Mylin Artur M, Кандидат хімічних наук Registration Date 23-12-2021 Organization State organization Institute of Sorption and Endoecology Problems of the National Academy of Sciences of Ukraine popup.description2  The presented results show that catalysts based on SnО2 ZnO/Al2O3, synthesized by a simple impregnation method, are able to effectively catalyze the conversion of fructose to methyl lactate in aqueous methanol in a flow reactor. Under optimal conditions on the 10SnO2 5ZnO / Al2O3 catalyst, 70% methyl lactate yield could be achieved. Methyl lactate with a yield of up to 70 wt.% Can be obtained by vapor-phase oxidation of 20 % of a mixture of propylene glycol with methanol with oxygen on a supported CeO2/Al2O3 catalyst at 210-220 °C and contact time 3-4 sec. It is shown that the catalyst CeO2/Al2O3 provides selective conversion of methanolic solution of glycerol to methyl lactate in the vapor phase in the presence of oxygen. The maximum yield of methyl lactate (79 %) is observed on the oxide catalyst CeO2/Al2O3 with a cerium dioxide content of 10 wt.% at 240 °C / 0.1 MPa and a molar ratio of oxygen: glycerol = 1: 2. The process of obtaining glycolic acid and its methyl ester from glyoxal on a number of acid and basic catalysts has been studied. It is shown that the most selective was MgO-ZrO2-catalyst which is able to ensure the conversion of methanolic glyoxal solution at 150 °C with 100% yield of methyl glycolate. The reaction of double cyclodehydration of D-sorbitol to isosorbite on sulfokationites in vacuum (150-170 mbar) without solvent was studied. Amberlyst 15 and KU 2 8 sulfokationites have been shown to effectively catalyze the double cyclodehydration of D sorbitol to isosorbide at 120-140 oC in a batch reactor and provide 78-88 % yield of isosorbide with complete sorbitol conversion at 140 oC in 3 hours. A promising, ternary ZrO2–SiO2–SnO2 oxide was synthesized by the Sol-gel method and the optimal ratio of Zr: Si: Sn = 1: 2: 0.4 cations for superacid centers with strength H0 = - 14.52 was determined. Product Description popup.authors Inshina Olena I Hes Nataliia L. popup.nrat_date 2021-12-23 Close