Kinetic and Thermodynamic Specific Features of Hydrogenation of Hexene-1, Heptene-1, and Cyclohexene on Catalyst Containing Copper Nanoparticles

Abstract

Kinetics of hydrogenation of hexene-1, heptene-1, and cyclohexene on copper nanoparticles was studied. To examine the thermodynamic specific features, the entropy of formation of an activated complex, rate constants, and conversion were calculated. A conclusion that the key role is played by the entropy factor in the formation of the activated complex is made on the basis of the data obtained. The similarity between the mechanisms by which activated complexes are formed in the hydrogenation of hexene-1, heptene-1, and cyclohexene and in that of hexyne-1, hexadiene-1,5, and benzene with the use of nickel nanoparticles was confirmed. The results obtained enable a conclusion about the high catalytic activity of copper nanoparticles in reactions of hydrogenation of unsaturated hydrocarbons in the temperature range 140–200°C at a pressure of 2 atm.