270762 Supported Phosphide Catalysts for the Depolymerization of Lignin
Supported Phosphide Catalysts for the Depolymerization of Lignin
Dallas J. Rensel and Jason C. Hicks*, University of Notre Dame
Lignin, a renewable and abundant component of lignocellulosic biomass, is an excellent feedstock for the sustainable production of fuels and chemicals.1 Due to its recalcitrant nature, the first step to utilizing lignin to generate liquid products is depolymerization and/or liquefaction. The development of selective catalysts that target the cleavage of C-O bonds in lignin is needed to stabilize the products generated during liquefaction to prevent repolymerization. We have synthesized many transition metal phosphide catalysts that have been used to catalytically upgrade lignin model compounds. Furthermore, we have synthesized Fe promoted phosphide catalysts on various silica, zeolite, and alumina supports. These catalysts have been characterized by a battery of techniques: XRD, TPR, FT-IR, SEM, ICP-OES, FT-Raman, UV-Vis, and XPS. Here, we present the effects of the metal loading, addition of Fe, and the support on the deoxygenation and depolymerization of lignin model compounds.
1. Hicks, J. C., Advances in C-O Bond Transformations in Lignin-Derived Compounds for Biofuels Production. J. Phys. Chem. Lett. 2011, 2 (18), 2280-2287.
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