Highly dispersed Ni particles on Ru/NiAl catalyst derived from layered double hydroxide for selective CO methanation

• NiAl-mixed oxide catalysts derived from LDH prepared by co-precipitation method.
• Ru is impregnated on NiAl-mixed oxide by conventional impregnation method.
• Effect of calcination on Ru/NiAl-mixed oxide catalyst is studied.
• Uncalcined Ru/NiAl has shown the best catalytic performance for CO-SELMET.

In this communication, we report novel Ru/NiAl-layered double hydroxide derived catalysts for CO removal by selective CO methanation. The experimental results revealed that uncalcined Ru/NiAl catalyst shows the fine dispersion of the nickel particles and remarkably high activity to CO at wider operating temperature window ranging from 150 °C to 250 °C. This work shows promising potential in further application of selective CO methanation as deep CO removal process of fuel processors especially for polymer electrolyte membrane fuel cells (PEMFC).

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