title: Gas-Phase Partial Oxidation of Lignin to Carboxylic Acids over Vanadium Pyrophosphate and Aluminum-Vanadium-Molybdenum.
abstract: Lignin is a complex polymer that is a potential feedstock for aromatic compounds and carboxylic acids by cleaving the β-O-4 and 5-5' linkages. In this work, a syringe pump atomizes an alkaline solution of lignin into a catalytic fluidized bed operating above 600 K. The vanadium heterogeneous catalysts convert all the lignin into carboxylic acids (up to 25 % selectivity), coke, carbon oxides, and hydrogen. Aluminum-vanadium-molybdenum mostly produced lactic acid (together with formic acid, acrylic acid, and maleic anhydride), whereas the vanadium pyrophosphate catalyst produced more maleic anhydride.
authors.affiliation: Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, C.P. Centre-ville, Montréal, H3C 3A7, Canada. samira.lotfi@polymtl.ca.
authors.forename: Samira
authors.initials: S
authors.lastname: Lotfi
authors.affiliation: Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, C.P. Centre-ville, Montréal, H3C 3A7, Canada.
authors.forename: Daria C
authors.initials: DC
authors.lastname: Boffito
authors.affiliation: Department of Chemical Engineering, École Polytechnique de Montréal, P.O. Box 6079, C.P. Centre-ville, Montréal, H3C 3A7, Canada. gregory-s.patience@polymtl.ca.
authors.forename: Gregory S
authors.initials: GS
authors.lastname: Patience
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry*; D011756:Diphosphates / Q000737:chemistry*; D005740:Gases / Q000737:chemistry; D008031:Lignin / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D010084:Oxidation-Reduction; D014639:Vanadium / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D011756:Diphosphates; D005740:Gases; D014639:Vanadium; C107241:diphosphoric acid; D008982:Molybdenum; D008031:Lignin; D000535:Aluminum
keywords: biomass; carboxylic acids; heterogeneous catalysis; oxidation; supported catalysts