A new approach to well-defined, stable and site-isolated catalysts
By Kirill Kovnir, Marc Armbrüster, D. Teschner, T. Venkov, F. Jentoft, A. Knop‐Gericke, Y. Grin, R. Schlögl. 2007
182 citations recorded by the source corpus.
Abstract A new concept to circumvent some of the problems that are hindering a rational metallic catalyst development is introduced. Investigation of conventional metal catalysts — which consist of supported metals, metal mixtures or alloys — is handicapped by the presence of a variety of active sites, their possible agglomeration, metal–support interactions as well as segregation of the components. In order to avoid most of the drawbacks, we employ well-defined, ordered and in-situ stable unsupported intermetallic compounds. Knowledge of the chemical bonding in the compounds and the defined neighbourhood of the active sites allows a rational approach to catalysts with excellent selectivity as well as long-term stability. The concept is demonstrated for the intermetallic compound PdGa, which is applied as catalyst for the selective hydrogenation of acetylene to ethylene.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/10023e6e4ea25326e1669237646bc2a0cb72fcab
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Citations in the corpus
- Towards the computational design of solid catalysts. (2009, background): “Also identified are the alloys made from PdGa, PdPb and PdAu, which have recently been shown experimentally to exhibit a good activity and selectivit”