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Detecting and utilizing minority phases in heterogeneous catalysis.

ABSTRACT: Highly active phases in carbon monoxide oxidation are known, however they are transient in nature. Here, we determined for the first time the structure of such a highly active phase on platinum nanoparticles in an actual reactor. Unlike generally assumed, the surface of this phase is virtually free of adsorbates and co-exists with carbon-monoxide covered and surface oxidized platinum. Understanding the relation between gas composition and catalyst structure at all times and locations within a reactor enabled the rational design of a reactor concept, which maximizes the amount of the highly active phase and minimizes the amount of platinum needed.

SUBMITTER: Hartfelder U

PROVIDER: S-EPMC5121607 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature

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Detecting and utilizing minority phases in heterogeneous catalysis.

Hartfelder Urs U Singh Jagdeep J Haase Johannes J Nachtegaal Maarten M Grolimund Daniel D van Bokhoven Jeroen A JA

Scientific reports 20161124

Highly active phases in carbon monoxide oxidation are known, however they are transient in nature. Here, we determined for the first time the structure of such a highly active phase on platinum nanoparticles in an actual reactor. Unlike generally assumed, the surface of this phase is virtually free of adsorbates and co-exists with carbon-monoxide covered and surface oxidized platinum. Understanding the relation between gas composition and catalyst structure at all times and locations within a re ...[more]

PMID: 27883033

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