Oil and Gas

Biography

Biography: Murtala M. Ambursa

Abstract

The role of catalysts for hydrodeoxygenation of bio oil to bio-fuels is highly tremendous. Also evaluating bio oil model compounds mixtures will give an insight into competitive adsorption effect on catalytic performance during hydrodeoxygenation of lignin derived bio oil. This research work reported Cu-Ni/TiO₂ with high activity and hydrocarbons selectivity in hydrodeoxygenation of lignin derived bio oil model compounds mixtures (Guaiacol, Anisole and Cresol). Various Cu-Ni/TiO₂ with different Ni loading were synthesized by impregnation methods and after calcination, activation these catalysts were optimized by catalytic activity of this mixture at 260^oC, 10MPa and 6hours of reactions. The physico-chemical parameters of the most perfoming Ni loaded samples were characterized by Raman spectroscopy, XRD, FESEM, EDX and H₂-TPR analysis. The catalytic activity of 10% Ni loaded catalysts was found to be highest with 95.78% mixture conversion and hydrocarbons selectivity of 62.54% than 7.5% and 12.5% Ni loaded catalysts with 76.92% and 79.44% conversion as well as 49.54% and 51.04% hydrocarbons selectivity. The catalysts structure-activity correlations revealed that, the catalytic performance correlate well with dispersions and reducibility of Cu-Ni species. The investigated catalytic reactions pathway for the associated model compounds of the mixture revealed that, the conversions of model compounds to cyclic hydrocarbons proceed by demethoxylation, dihydroxylation and demethylation pathways with methyl group transfer. Thefore, direct deoxygenation-hydrogenation pathway predominates hydrogenation-dehydration pathways in hydrodeoxygenation of lignin derived bio oil model compounds mixtures (Guaiacol, Anisole and Cresol) over10% Ni loaded Cu-Ni/TiO₂ catalysts under the tested conditions.