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- Title
The Preparation of a Residue-free, Alumina-supported Gold Catalyst by Decomposition of an Azido-Gold(III) Complex and an Evaluation of the Effectiveness of the Catalyst for the Hydrogenation of Propyne.
- Authors
Lopez‐Sanchez, Jose Antonio; Morisse, Clément; Winfield, John M.; Krumm, Burkhard; Klapötke, Thomas M.; Lennon, David
- Abstract
A 1 % w/w alumina-supported gold catalyst is described that is prepared from the impregnation of alumina with a solution of ammonium tetraazidoaurate(III), NH4[Au(N3)4]. Decomposition of the azide precursor leads to a residue-free catalyst comprised of well-dispersed gold particles. This novel material is tested for propyne hydrogenation using pulse-flow techniques and displays 100 % selectivity to the partial hydrogenation product, propene, albeit in the presence of a large retention of hydrocarbon by the catalyst. The latter characteristic is associated with a support-mediated deactivation pathway. Comparing catalytic performance with a 1.45 % w/w Au/TiO2 reference catalyst indicates that chlorine-free precursor compounds are not required to enhance catalytic activity for this particular reaction.
- Subjects
GOLD catalysts; GOLD compounds; PROPENE; ALUMINUM oxide; HYDROGENATION; HYDROCARBONS; CATALYTIC activity
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2015, Vol 641, Issue 3/4, p694
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201400506