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Information × Registration Number 0221U105056, 0119U102362 , R & D reports Title Composites of nanoporous copper foams and porous coordination polymers as heterogeneous catalysts of condensation and hydrogenation reactions popup.stage_title Head Lytvynenko Anton S., Кандидат хімічних наук Registration Date 31-05-2021 Organization L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine popup.description2  A method of formation of nanostructured materials based on nanoporous copper foams and porous coordination polymers HKUST-1, MIL-101(Cr) and MIL-101(Cr) impregnated by nickel boride was developed, their structures were characterized. Intercalation of the PCP particles into the space between the nanosized foam filaments and their anchoring there were confirmed, the explanation of these phenomena by the impact of the surface tension of the solvent upon its drying was proposed. Unexpectedly high stability of the obtained composites against washing out by the solvent was found, that could be explained by both mechanical (fixation of the PCP particles between the foam filaments) and chemical (binding by formation of coordination and hydrogen bonds between superficial atoms of the composite components) reasons. It was found that the composite of HKUST-1 and nanoporous copper foam exhibited high catalytic activity in Knoevenagel reaction on the example of the condensation of salicylic aldehyde with malononitrile with formation of the substituted chromene (with the conversion up to 95 %). The found activity was higher than the activity of the HKUST-1 powder at the same conditions, that could be explained by lesser aggregation of the HKUST-1 particles, immobilized on the foam surface. The stability of the composite against deterioration in the course of the reaction was confirmed. It was found that the composite of the MIL-101(Cr) PCP, impregnated by nickel boride, and nanoporous copper foam catalyzed debenzylation of phenyl benzyl ether by gaseous hydrogen and NaBH4 with conversion up to 70 % in mild conditions. Product Description popup.authors Kurmach Mykhailo M Paryiska Olena O popup.nrat_date 2021-05-31 Close