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2019, N3, pp. 64-70

E.O. Epiphanov, A.G. Shubnyi, N.V. Minayev, A.O. Rybaltovskii, V.I. Uusupop, O.P. Parenago

Applied the Synthesis of Heterogeneous Catalysts by Laser Ablation of Metallic Palladium with deposition on Alumina in the Supercritical Carbon Dioxid

An experimental setup was created to produce deposited heterogeneous catalysts by laser ablation of a metal target in the presence of various carriers in supercritical carbon dioxide (SC-CO2). The conditions of pulsed laser exposure (wavelength, frequency, and time), SC-CO2 medium parameters (pressure, temperature) and the configuration of experimental setup (laser, target, carrier and visual and optical control elements) were worked out. A composite consisting of Al2O3 with Pd particles was obtained by laser ablation of metal palladium with deposition onto γ-alumina in a SCCO2 medium. The synthesized composite has been studied as a catalyst for liquidphase hydrogenation of di phenylacetylene and its high activity (TOF = 1.45 s-1) and high selectivity in hydrogenation of one triple bond has been shown.

Key words: supercritical carbon dioxide, laser ablation, carrier, metal target, composite, catalysts, hydrogenation

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