Siberian Federal University

Guaiacol is a lignin model compound often used to study of the lignin and bio- oil hydrodeoxygenation (HDO) pathways, as well as to determine the efficiency of the catalysts used. In the present work, the guaiacol HDO process was studied in the presence of nickel, ruthenium and bimetallic Ni/Ru catalysts prepared on the basis of the pre- oxidized carbon support “Sibunit”. The hydrodeoxygenation process was carried out at temperatures of 200–250 °C, an initial H2 pressure of 1.5 MPa in a medium of water, ethanol and dodecane. The bimetallic catalyst containing 10 wt.% Ni and 3 wt.% Ru (3Ru10Ni/C) turned out to be the most active and selective in the conversion of guaiacol into aromatic compounds and cyclic derivatives of alkanes in an aqueous medium. A catalytic study of the guaiacol HDO process in the presence of this bimetallic catalyst was carried out. The influence of the catalyst nature and characteristics on the HDO process routes is discussed