Catalytic Technique of Bio–oil Conversion to Valuable Chemicals

Abstract

Catalytic technique of lignin derived bio–oil conversion, has been studied over Pt–γAl2O3 catalyst in a fixed–bed tubular micro–activity flow reactor at 673 K, 14 bar and space velocity 3 (g of Anisole)/(g of catalyst × h), in the presence of H2. A reaction network according to selectivity–conversion data is proposed to describe the evolution of products observed. The reactions include the following, anisole to benzene via HDO, to hexamethylbenzene via hydrodeoxygenation and alkylation, to phenol via hydrogenolysis, to 2–methylphenol via transalkylation and finally to 2, 4–dimethylphenol, 2, 4, 6–trimethylphenol and 2, 3, 5, 6–tetramethylphenol via transalkylation and alkylation. Experimental results indicated that the anisole conversion decreases about 20% with increasing the pressure from 8 to 14 bar at 673 K.