Effective parameters on selective catalytic hydrodeoxygenation of phenolic compounds of pyrolysis bio-oil to high-value hydrocarbons

Abstract

Selective hydrodeoxygenation of phenolic compounds present in pyrolysis bio-oil (phenol, cresol, guaiacol and anisole) to high-value hydrocarbons is a great function of catalyst properties and operating conditions.

Synergy in Lignin Upgrading by a Combination of Cu-Based Mixed Oxide and Ni-Phosphide Catalysts in Supercritical Ethanol

“…15 Alumina-supported CoMo and NiMo sulfides, which are widely used as catalysts for hydrotreating operations in oil refineries, can be used for this purpose. 16,17 Although these catalysts display high HDO activity in their sulfide form, the sulfur content of lignin-derived bio-oils is too low to maintain the catalyst in the active sulfided state during HDO reactions.…”

Upgrading Lignocellulosic Biomasses: Hydrogenolysis of Platform Derived Molecules Promoted by Heterogeneous Pd-Fe Catalysts

“…With respect to other hydrodeoxygenation process [262,263], the cleavage of the aromatic C-O bond requires a dissociation energy of about 100 kJ/mol higher than those of the corresponding aliphatic bond [192], even if the latter is generally characterized by lower steric constraints. It is therefore highly important to understand the integrated steps of hydrogenolysis, hydrogenation, hydrolysis, and dehydration reactions [264] to selectively cleave the different bonds present in lignin model molecules.…”

Hydrodeoxygenation of Lignin-Derived Phenols: From Fundamental Studies towards Industrial Applications

“…Several reviews have already been published on HDO of lignin based phenols [5][6][7][8][9][10][11][12][13][14][15]. In these works, the main emphasis has been on different catalysts [5][6][7][8]11], deactivation [6,8,9], mechanism [6,8,10], kinetics [6]. Some specific topics, such as the use of carbide catalysts [12] and production of jet fuel from lignin [7] have been recently reviewed.…”

“…One of the most important research area in transformation of bio-oil [4] and lignin [2,3] is catalytic hydrodeoxygenation (HDO) during which fuels or suitable blending agents are produced including benzene, toluene as well as cycloalkane and-ketones. Several reviews have already been published on HDO of lignin based phenols [5][6][7][8][9][10][11][12][13][14][15]. In these works, the main emphasis has been on different catalysts [5][6][7][8]11], deactivation [6,8,9], mechanism [6,8,10], kinetics [6].…”