Home – Home – Jornals – Chemistry for Sustainable Development 2016 number 1

Liquid-phase hydrogenation of acetylene into ethylene in a flow set-up with a steady catalyst layer at a pressure of 10 atm was investigated. N-methylpyrrolidone was used as a solvent. The effect of temperature and the presence of CO in the gas flow on the characteristics of selective hydrogenation of acetylene on Pd/Al₂O₃, Pd/Sibunite catalysts was studied. It was demonstrated that the selectivity of ethylene formation increases with an increase in CO content in the gas mixture H₂/CO, ethane content in reaction products decreases simultaneously, while the selectivity of the formation of C₄₊ oligomers remains practically unchanged. With an increase in reaction temperature, the degree of acetylene transformation increases, while the relations between reaction products change only insignificantly. The results provide evidence that liquid-phase hydrogenation of acetylene in the flow mode at a pressure of 10 amt and temperature of 120 °C and the presence of CO in the gas flow in the amount of 20 vol. % provide high conversion degree and selectivity of the formation of target product.