@article{Sharanda_Mylin_Zinchenko_Brei_2021, title={Hydrogenation of C`’5 olefins in vapor phase on the copper oxide catalyst}, url={https://kataliz.org.ua/index.php/journal/article/view/66}, DOI={10.15407/kataliz2021.32.093}, abstractNote={<p>Hydrogenation of unsaturated hydrocarbons is one of the important processes of the modern petrochemical industry. Quite large amount of C<sub>4-5</sub> fractions of hydrocarbons containing paraffins and olefins are formed via pyrolysis of light petroleum products. To increase the production of ethylene and propylene, the separated C<sub>4-5</sub> fractions are recycled for pyrolysis. Preliminary hydrogenation of olefin compounds in these fractions is necessary. Preferably, the hydrogenation is carried out in the liquid phase at temperatures of 40 – 80 °C under hydrogen pressure up to 15 bar overhigh-cost palladium-containing catalysts. The aim of this work was to elucidate the possibility of efficient hydrogenation of industrial С<sub>5</sub> fraction containing C<sub>`5</sub> olefins over some mixed copper-oxide catalysts. Hydrogenation of C<sub>`5</sub> fraction of&nbsp;<br>pyrolysis of light petroleum products in the vapor phase over such catalysts as CuO-ZnO-ZrO2-Al<sub>2</sub>O<sub>3</sub> and CuO-ZnOAl<sub>2</sub>O<sub>3</sub> in comparison with commercial Pd/Al<sub>2</sub>O<sub>3</sub> catalyst for C<sub>4-5</sub> olefins hydrogenation have been studied. The pyrolysis C<sub>`5</sub> fraction containing 51 wt. % of unsaturated hydrocarbons (2-methyl-1-butene, 2-pentene, cis-2-pentene, trans-2-pentene, 2-methyl-2-butene) was used in the work. The catalytic process was carried out in a reactor with a fixed catalyst bed at 170 – 190 <sup>o</sup>C, and a pressure of 1.1 – 2.5 MPa. Analysis of obtained products was provided by gas-chromatography (Agilent 7820A) and <sup>13</sup>C NMR (Bruker Avance 400) methods. It is shown that the hydrogenation of olefins with conversion of the C`<sub>5</sub> fraction such high as 98 – 99 % can be carried out in the vapor phase over CuO-ZnO-Al<sub>2</sub>O<sub>3</sub> and CuO-ZnO-Al<sub>2</sub>O<sub>3</sub> catalysts at the temperature of 180 oC and pressure 1.2 – 1.5 MPa. The total C<sub>5</sub> olefinsloading can reach 15 – 23 mmol/gcat/h. The residual content of unsaturated hydrocarbons is 1 %. At the pressure of 2.5 MPa, a sharp decrease in conversion is observed, as n-pentane turns into a liquid phase. Catalyst deactivation was not observed for 36 hours. Under the same conditions the drop in activity of industrial catalyst 0.35 % Pd/Al<sub>2</sub>O<sub>3 </sub>was observed after 70 minutes from the start of work.</p&gt;}, number={32}, journal={Catalysis and petrochemistry}, author={Sharanda, M.E. and Mylin, A.M. and Zinchenko, O.Yu. and Brei, V.V.}, year={2021}, month={Dec.}, pages={93-98} }