Gold cations in ceria : and ideal precursor to highly active gold clusters on oxygen rich ceria for butadiene hydrogenation

Y. Guan, E.J.M. Hensen

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Abstract

Cationic gold in strong interaction with ceria resist leaching by cyanide anions and forms an ideal precursor to small metallic gold clusters following reduction with high activity in butadiene hydrogenation. The gold clusters are metallic in nature and consists of less than ten gold atoms. Combined in situ XANES/activity studies show that the catalytic activity is linked to reduced gold atoms and not cations. Model studies on gold supported on ceria rods and cubes suggest that gold oxide particle on oxygen-rich ceria surfaces { 11 O} and { 111 } resist this leaching step and display quite high activity in the oxidation of CO.
Original languageEnglish
Title of host publicationEuropaCat IX, Catalysis for a Sustainable World : 30th August - 4th September 2009, Salamanca, Spain : abstracts
PagesO1-4-
Publication statusPublished - 2009
Eventconference; EuropaCat IX : Catalysis for a sustainable world; 2009-08-30; 2009-09-04 -
Duration: 30 Aug 20094 Sep 2009

Conference

Conferenceconference; EuropaCat IX : Catalysis for a sustainable world; 2009-08-30; 2009-09-04
Period30/08/094/09/09
OtherEuropaCat IX : Catalysis for a sustainable world

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