(114b) Highly Selective Fe/Mo Hydrodeoxygenation Catalysts | AIChE

(114b) Highly Selective Fe/Mo Hydrodeoxygenation Catalysts


Hicks, J. - Presenter, University of Notre Dame
Rensel, D. J., University of Notre Dame

Bio-oils and lignin contain many types of phenolic species that require removal in order to be used as transportation fuels.[1,2]  Many catalysts have been used deoxygenate bio-oils and liquefy lignin including sulfides, carbides, oxides, and phosphides.[3]  However, in many cases, these catalysts are not selective to hydrodeoxygenation and often hydrogenate aromatic components as well.  Therefore, the development of new catalysts designed to selectively target the cleavage of C-O bonds in lignin is an important task.  Here, we discuss the synthesis and characterization of a new bimetallic FexMoyPz catalyst that is highly selective for C-O bond cleaving and hydrodeoxygenation reactions.[4]  Specifically, these catalysts are capable of selectively deoxygenating phenol to form benzene rather than completely hydrogenating the aromatic ring to produce cyclohexane (~96 % benzene). Various model compounds have been studied with this catalyst, including anisole, catechol, and phenethyl phenyl ether.  Additionally, mechanistic D2 studies were performed to determine how these catalysts deoxygenate various model compounds.  These catalysts have been characterized in detail with scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), Raman, temperature programmed reduction (H2-TPR), and FT-IR spectroscopy. 

[1]  Huber, G. W.; Iborra, S.; Corma, A., Chem. Rev., 2006, 106, 4044-4098.

[2] Zakzeski, J.; Bruijnincx, P. C. A.; Jongerius, A. L.; Weckhuysen, B. M., Chem. Rev., 2010, 110, 3552-3599.

[3]  Hicks, J.C.; J. Phys. Chem. Lett., 2011, 2, 2280-2287.

[4]  Rensel, D. J.; Rouvimov, S.; Gin, M.;, Hicks, J.C.; J. Catal., 2013, in revision.