The catalysts were washed with petroleum ether and acetone, and dried with argon. The liquid products were then centrifuged (5000 rpm) and analyzed by gas chromatography/mass spectrometry (GC/MS). Depending on specific tasks, the reaction was carried out at 320–380☌ under vigorous stirring for 1–6 h. The autoclave was sealed and filled with hydrogen to 5 MPa. To prepare molybdenum and tungsten phosphides and run catalytic tests in the presence of Mo-based and W-based catalytic systems, a mixture that contained 84.4 mg of molybdenum carbonyl or 113.7 mg of tungsten carbonyl, 83.8 mg of triphenylphosphine, and 2 g of a 10 wt % guaiacol solution in dodecane, as well as a magnetic stir bar, were placed in an autoclave. 123226), and toluene (CP grade, Komponent-Reaktiv) were also used in the study. H 2 (≥98%, Air Liquide), Ar (≥98%, Air Liquide), He (99.999%, Air Liquide), petroleum ether 70/100 (technical grade, Komponent-Reaktiv, Russia), acetone (technical grade, Komponent-Reaktiv), KMnO 4 (high-purity, Komponent-Reaktiv), phenol (≥99%, Sigma-Aldrich cat. 120190010) was used as a substrate, and dodecane (99%, Acros Organics cat. T84409) were used as catalyst precursors. ![]() Molybdenum carbonyl (ω Mo 36.5–37.5%, manufactured by the Redkino pilot plant, Russia), tungsten carbonyl (ω W 51–52%, the Redkino pilot plant), and triphenylphosphine (99%, Sigma-Aldrich cat.
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