Preparation, characterization and application of K-PtCo/Al2O3 catalyst coatings for preferential CO oxidation
Review articleOpen access

Highlights•Less than 10 ppm CO at a high GHSV under a wide temperature window was achieved.•The favorable role of K is ascribed to its promotional effect on Pt3Co formation.•The K addition rules out a redox equilibrium for Co species.

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