title: Identifying low-coverage surface species on supported noble metal nanoparticle catalysts by DNP-NMR.
abstract: DNP-NMR spectroscopy has been applied to enhance the signal for organic molecules adsorbed on γ-Al2O3-supported Pd nanoparticle catalysts. By offering >2500-fold time savings, the technique enabled the observation of (13)C-(13)C cross-peaks for low coverage species, which were assigned to products from oxidative degradation of methionine adsorbed on the nanoparticle surface.
authors.affiliation: Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011-2230, USA.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Johnson
authors.affiliation: US DOE, Ames Laboratory, Ames, IA 50011-3020, USA.
authors.forename: Frédéric A
authors.initials: FA
authors.lastname: Perras
authors.affiliation: US DOE, Ames Laboratory, Ames, IA 50011-3020, USA.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kobayashi
authors.affiliation: Department of Chemical and Biological Engineering, University of Wisconsin, Madison, WI 53706, USA.
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Schwartz
authors.affiliation: Department of Chemical and Biological Engineering, University of Wisconsin, Madison, WI 53706, USA.
authors.forename: James A
authors.initials: JA
authors.lastname: Dumesic
authors.affiliation: Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011-2230, USA.
authors.forename: Brent H
authors.initials: BH
authors.lastname: Shanks
authors.affiliation: US DOE, Ames Laboratory, Ames, IA 50011-3020, USA and Department of Chemistry, Iowa State University, Ames, IA 50011-3020, USA. mpruski@iastate.edu.
authors.forename: Marek
authors.initials: M
authors.lastname: Pruski
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002384:Catalysis; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D053768:Metal Nanoparticles; D010084:Oxidation-Reduction; D013499:Surface Properties
chemical_list: D000537:Aluminum Oxide