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Nanotechnology Now - Press Release: Active platinum species: Catalytic high-temperature oxidations: Individual atom or metal cluster?
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Active Platinum Species
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Highly dispersed platinum catalysts provide new possibilities for industrial processes, such as the flameless combustion of methane, propane, or carbon monoxide, which has fewer emissions and is more resource efficient and consistent than conventional combustion. In the journal
Angewandte Chemie, a team of researchers reports on which platinum species are active in high-temperature oxidations and what changes they can undergo in the course of the process important prerequisites for the optimization of catalysts.
Individual metal atoms and clusters consisting of only a few metal atoms have interesting catalytic properties determined by the exact nature of the active metal species. Usually, these are highly dispersed and deposited on a support such as zeolite, which is a porous silicate framework structure that also plays a role in the characteristics of a catalyst. Even the smallest change in the active centers can drastically reduce the efficiency of a catalyst. For exam