Efficient cobalt–manganese oxide catalyst deposited on modified AC with unprecedented catalytic performance in CO preferential oxidation

In comparison to the supported cobalt–cerium oxide catalyst on AC, we first fabricated a novel and highly-efficient cobalt–manganese non-precious metal catalyst deposited on modified AC with unprecedented catalytic activity and extremely wide temperature-operation window for CO complete removal from an H2-rich stream, which resulted from the strong interaction of finely dispersed cobalt–manganese primarily confirmed by various characterization results. The high catalytic activity and extremely broad temperature-operation window allow the developed catalyst to possess a fascinating perspective for large-scale application in industry.

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► A novel and highly-efficient CoMn/AC–DP CO PROX catalyst was first fabricated.
► It shows much high activity and extremely wide temp-window for 100% CO removal.
► High activity is ascribed to dispersity, crystallinity and interaction of CoMn.
► The physiochemical properties are strongly affected by diverse supporting methods.
► Unprecedented properties allow it to possess fascinating perspective in industry.