Volume 86 Issue 12 | p. 40 | Concentrates
Issue Date: March 24, 2008

Core-Shell Catalyst Clears CO

Department: Science & Technology

A catalyst composed of a 3-nm-diameter ruthenium core coated with a platinum shell just one or two atomic layers thick converts CO to CO2 in the presence of hydrogen more selectively and at more than 50 °C lower than other common catalysts that mediate the same oxidation (Nat. Mat., DOI: 10.1038/nmat2156). Such catalysts could lead to new methods for preparing high-purity hydrogen as required for fuel cells, which are readily damaged by the high levels . . .

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