title: From dull to shiny: A novel setup for reflectance difference analysis under catalytic conditions.
abstract: We have developed an experimental setup for optically monitoring a catalytically active surface under reaction conditions. A flow reactor with optical access allows us to image the behavior of an active catalyst surface down to the millimeter length scale. We use reflectance difference measurements with 625 nm light to investigate CO oxidation on Pd(100) at 300 mbar and 320 °C. We conclude that the changes in visible contrast result from the formation of an oxide layer after surface oxidation.
authors.affiliation: Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: Willem G
authors.initials: WG
authors.lastname: Onderwaater
authors.affiliation: Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: Andriy
authors.initials: A
authors.lastname: Taranovskyy
authors.affiliation: Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: G Marien
authors.initials: GM
authors.lastname: Bremmer
authors.affiliation: Leiden Probe Microscopy B.V., J.H. Oortweg 19, 2333 CH Leiden, The Netherlands.
authors.forename: Gertjan C
authors.initials: GC
authors.lastname: van Baarle
authors.affiliation: Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: Joost W M
authors.initials: JW
authors.lastname: Frenken
authors.affiliation: Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: Irene M N
authors.initials: IM
authors.lastname: Groot