title: Energy-resolved electron-yield XAS studies of nanoporous CoAlPO-18 and CoAlPO-34 catalysts.
abstract: Energy-resolved electron-yield X-ray absorption spectroscopy is a promising technique for probing the near-surface structure of nanomaterials because of its ability to discriminate between the near-surface and bulk of materials. So far, the technique has only been used in model systems. Here, the local structural characterization of nanoporous cobalt-substituted aluminophosphates is reported and it is shown that the technique can be employed for the study of open-framework catalytically active systems. Evidence that the cobalt ions on the surface of the crystals react differently to those in the bulk is found.
authors: Netherlands Organization for Scientific Research (NWO), DUBBLE@ESRF, BP 220, 6 Rue Jules Horowitz, 38043 Grenoble, France.
authors: Vladimir
authors: V
authors: Martis
authors: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors: Martin
authors: M
authors: Martis
authors: STFC Rutherford Appleton Laboratory, Harwell, Didcot OX11 0QX, UK.
authors: John
authors: J
authors: Lipp
authors: Netherlands Organization for Scientific Research (NWO), DUBBLE@ESRF, BP 220, 6 Rue Jules Horowitz, 38043 Grenoble, France.
authors: Dirk
authors: D
authors: Detollenaere
authors: STFC Rutherford Appleton Laboratory, Harwell, Didcot OX11 0QX, UK.
authors: Trevor
authors: T
authors: Rayment
authors: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
authors: Gopinathan
authors: G
authors: Sankar
authors: Netherlands Organization for Scientific Research (NWO), DUBBLE@ESRF, BP 220, 6 Rue Jules Horowitz, 38043 Grenoble, France.
authors: Wim
authors: W
authors: Bras
keywords: EXAFS; aluminophosphates; catalysis; energy-resolved electron-yield XAS