Heterogeneous catalysis

R Schlögl - Angewandte Chemie International Edition, 2015 - Wiley Online Library
A heterogeneous catalyst is a functional material that continually creates active sites with its
reactants under reaction conditions. These sites change the rates of chemical reactions of …

Oxide ultra-thin films on metals: new materials for the design of supported metal catalysts

HJ Freund, G Pacchioni - Chemical Society Reviews, 2008 - pubs.rsc.org
Ultrathin oxide films on metals offer new opportunities for the design of supported
nanoclusters with potential use in catalysis. This requires a characterization at the atomistic …

Support nanostructure boosts oxygen transfer to catalytically active platinum nanoparticles

GN Vayssilov, Y Lykhach, A Migani, T Staudt… - Nature materials, 2011 - nature.com
Interactions of metal particles with oxide supports can radically enhance the performance of
supported catalysts. At the microscopic level, the details of such metal–oxide interactions …

Determining the active site in a catalytic process: Operando spectroscopy is more than a buzzword

BM Weckhuysen - Physical Chemistry Chemical Physics, 2003 - pubs.rsc.org
Determining the active site in a catalyst material and elucidating the related reaction
mechanism remain intellectual challenges and are of paramount importance for the rational …

Palladium–gallium intermetallic compounds for the selective hydrogenation of acetylene: Part II: Surface characterization and catalytic performance

J Osswald, K Kovnir, M Armbrüster, R Giedigkeit… - Journal of …, 2008 - Elsevier
The structurally well-defined intermetallic compounds PdGa and Pd3Ga7 constitute suitable
catalysts for the selective hydrogenation of acetylene. The surface properties of PdGa and …

Supported mixed metal nanoparticles as electrocatalysts in low temperature fuel cells

KY Chan, J Ding, J Ren, S Cheng… - Journal of Materials …, 2004 - pubs.rsc.org
Recent developments in syntheses and electrocatalytic properties of mixed metal
nanoparticles will be briefly reviewed specifically for applications in fuel cells. Various …

Operando surface spectroscopy and microscopy during catalytic reactions: from clusters via nanoparticles to meso‐scale aggregates

G Rupprechter - Small, 2021 - Wiley Online Library
Operando characterization of working catalysts, requiring per definitionem the simultaneous
measurement of catalytic performance, is crucial to identify the relevant catalyst structure …

Acetylene and ethylene hydrogenation on alumina supported Pd-Ag model catalysts

NA Khan, S Shaikhutdinov, HJ Freund - Catalysis Letters, 2006 - Springer
Adsorption and co-adsorption of ethylene, acetylene and hydrogen on Pd-Ag particles,
supported on thin alumina films, have been studied by temperature programmed desorption …

Molecular beam experiments on model catalysts

J Libuda, HJ Freund - Surface Science Reports, 2005 - Elsevier
Heterogeneous catalysts are highly complex materials with respect to both their composition
and structure. The reaction kinetics on their surfaces is known to depend sensitively on …

Control of the charge state of metal atoms on thin MgO films

M Sterrer, T Risse, U Martinez Pozzoni, L Giordano… - Physical review …, 2007 - APS
The arrangement of single gold and palladium atoms deposited on the surface of a 3
monolayer thin film of MgO was investigated using low-temperature scanning tunneling …