In the current work we present a detailed analysis of the hydride phase formation in industrial Pd/C nanocatalysts by means of combined in situ X-ray absorption spectroscopy (EXAFS), X-ray diffraction (XRD) and volumetric measurements for the temperatures from - 10 to 50 degrees C in the hydrogen pressure range from 0 to 1000 mbar. alpha- and beta- hydride phases are clearly distinguished in XRD. For the first time, H/Pd atomic ratio were obtained by theoretical fitting of the near-edge region of the absorption spectra (XANES) and compared with volumetric measurements.

Hydride phase formation in carbon supported palladium hydride nanoparticles by in situ EXAFS and XRD

Bugaev, A. L.;Lomachenko, K. A.;LAZZARINI, ANDREA;VITILLO, Jenny Grazia;PIOVANO, ANDREA;GROPPO, Elena Clara;PELLEGRINI, RICCARDO;LAMBERTI, Carlo
2016-01-01

Abstract

In the current work we present a detailed analysis of the hydride phase formation in industrial Pd/C nanocatalysts by means of combined in situ X-ray absorption spectroscopy (EXAFS), X-ray diffraction (XRD) and volumetric measurements for the temperatures from - 10 to 50 degrees C in the hydrogen pressure range from 0 to 1000 mbar. alpha- and beta- hydride phases are clearly distinguished in XRD. For the first time, H/Pd atomic ratio were obtained by theoretical fitting of the near-edge region of the absorption spectra (XANES) and compared with volumetric measurements.
2016
16th International Conference on X-Ray Absorption Fine Structure, XAFS 2015
Karlsruhe Institute of Technology (KIT), deu
2015
712
1
012032
012032
http://iopscience.iop.org/article/10.1088/1742-6596/712/1/012032/pdf
XRD, EXAFS, palladium hydrate, PdH, XANES
Bugaev, A.L.; Guda, A.A.; Lomachenko, K.A.; Lazzarini, A.; Srabionyan, V.V.; Vitillo, J.G.; Piovano, A.; Groppo, E.; Bugaev, L.A.; Soldatov, A.V.; Dmitriev, V.P.; Pellegrini, R.; Van Bokhoven, J.A.; Lamberti, C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1609170
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