A Study of Tetrahydrofurfuryl Alcohol to 1,5-Pentanediol Over Pt–WOx/C
The hydrogenolysis of tetrahydrofurfural alcohol to 1,5-pentanediol was studied over a series of carbon-supported metal/metal-oxide pairs. In agreement with previous reports, specific pairs, especially Pt and Ir paired with WOx, MoOx and ReOx, exhibited high activity and selectivity, even though the individual components were not active or selective. Only reducible oxides produced selective catalysts. A more comprehensive study of the Pt–WOx system indicated that the active form of the catalyst exists as a thin, submonolayer film of the oxide on the Pt surface. This film could be formed by atomic layer deposition (ALD) of W(CO)6 onto the Pt nanocrystals and STEM–EDS mapping demonstrated that ALD deposition occurred selectively on the Pt. When the catalyst was formed by impregnation of Pt and W salts, the WOx was mobile and able to move onto the Pt. The implications of these result for preparing selective catalysts are discussed.
KeywordsHydrogenolysis Tetrahydrofurfuryl alcohol 1,5-Pentanediol Pt–WOx/C Atomic layer deposition
We acknowledge support from the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award no. DE-SC0001004. J.D.L acknowledge the support from the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by ORAU under Contract Number DE-SC0014664.
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Conflict of interest
The authors declare that they have no financial or other conflicts of interest regarding this work.
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