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Isolated Pd Sites on the Intermetallic PdGa(111) and PdGa( $\bar 1$ $\bar 1$ $\bar 1$ ) Model Catalyst Surfaces
Author(s) -
Prinz Jan,
Gaspari Roberto,
Pignedoli Carlo A.,
Vogt Jochen,
Gille Peter,
Armbrüster Marc,
Brune Harald,
Gröning Oliver,
Passerone Daniele,
Widmer Roland
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201203787
Subject(s) - intermetallic , catalysis , acetylene , bar (unit) , dissociation (chemistry) , chemistry , selectivity , materials science , organic chemistry , physics , alloy , meteorology
Scratching the surface : The high selectivity of PdGa catalysts towards the partial hydrogenation of acetylene was previously attributed to the separation of Pd atomic sites at the surfaces. The atomic structures of PdGa surfaces are determined by means of a combined experimental and computational approach, allowing investigation of the catalytic dissociation of hydrogen. The two opposite (111) and ${{\left( {\bar 1\bar 1\bar 1} \right)}}$ surfaces show a very different arrangement of catalytic centers.