caa a22 4500 463252594 CHVBK 20180405153344.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10562-006-9013-5 doi (NATIONALLICENCE)springer-10.1007/s10562-006-9013-5 Pd-Al interaction at elevated temperatures: a TEM and SAED study [Elektronische Daten] [Simon Penner, Bernd Jenewein, K. Hayek] Epitaxially grown Pd particles partly embedded in amorphous Al2O3 were subjected to annealing and reductive treatments in the temperature range 523-873K to induce a possible Pd-Al interaction. The structural, morphological and compositional changes were monitored by transmission electron microscopy and selected area electron diffraction. Formation of Pd4Al3 and PdAl alloys has been observed upon annealing in 1bar He for 1h at T>523K and upon reduction in 1bar H2 for 1h at T≥523K, respectively. Both alloys appear to be stable up to 873K, although Pd4Al3 shows beginning decomposition at and above 873K. The stability under oxidative conditions was found to be very similar, a transformation back into metallic Pd sets in for both compounds at around 573-623K. In agreement with previous studies on Pd/SiO2, the formation of an amorphous hydride phase and/or a heavily distorted Pd lattice has been detected after reduction in hydrogen at 523K. Springer Science+Business Media, LLC, 2007 Palladium nationallicence Al2O3 nationallicence electron microscopy nationallicence selected area diffraction nationallicence alloying nationallicence Pd4Al3 nationallicence PdAl nationallicence structural stability nationallicence reduction nationallicence annealing treatment nationallicence Penner Simon Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut Jenewein Bernd Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut Hayek K. Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 113/1-2(2007-01-01), 65-72 1011-372X 113:1-2<65 2007 113 10562 https://doi.org/10.1007/s10562-006-9013-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-006-9013-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Penner Simon Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut NATIONALLICENCE 700 1- Jenewein Bernd Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut NATIONALLICENCE 700 1- Hayek K. Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 113/1-2(2007-01-01), 65-72 1011-372X 113:1-2<65 2007 113 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer