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Abstract
An experimental setup is designed and assembled 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), parameters of an SC-CO2 medium (pressure and temperature), and configuration of the experimental setup (laser, target, carrier, and visual and optical control components) are determined. A composite comprised of Al2O3 with Pd particles is prepared in this setup by the laser ablation of metal palladium with deposition onto γ-alumina in an SC-CO2 medium. Studying the synthesized composite as a catalyst in the liquid-phase hydrogenation of diphenylacetylene shows its high level of activity (TOF = 1.45 s–1) and high selectivity in the hydrogenation of one bond of the triple bond.
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