Recent Catalytic Advances in Hydrotreatment Processes of Pyrolysis Bio-Oil

Catalytic hydrotreatment (HT) is one of the most important refining steps in actual petroleum-based refineries for production fuels and chemicals, it will play also a crucial role development biomass-based refineries. In fact, utilization HT processes upgrading biomass and/or lignocellulosic residues aimed to synthetic chemical intermediates represents reliable strategy reduce both carbon dioxide emissions fossil dependence. At this regard, catalytic oils obtained from either thermochemical (e.g., pyrolysis) or physical vegetable seeds pressing) allows convert biomass-derived into biofuel with properties very similar conventional ones (so-called drop-in biofuels). Similarly, hydro-processing may have key valorization other biorefinery streams, such as lignocellulose, high-added value chemicals. This review focused on recent developments stabilizing pyrolytic oil biomasses. A particular emphasis devoted catalyst formulation, reaction pathways, technologies.