Methane partial oxidation using Ni/Ce 0.9Zr 0.1O 2 catalysts

Abstract

The development of active and selective catalysts for methane partial oxidation is one of today's challenges, because these catalysts could be used either for hydrogen production purposes or as anode materials in single-chamber solid oxide fuel cells (SOFCs). In this work, the synthesis of ceria–zirconia solid solutions of nominal composition Ce 0.9Zr 0.1O 2 through the gel-combustion route is presented. The solids obtained were impregnated with nickel solutions to achieve contents of 9% and 50% (m/m), characterized texturally and structurally, and their catalytic behavior in the methane partial oxidation reaction was assessed. The synthesis method was effective, leading to solids with good morphological properties. Likewise, the Ni/Ce 0.9Zr 0.1O 2 catalysts proved to be active and showed a stable behavior during the working period, with methane conversion levels of 90% at temperatures above 550 °C, being hydrogen and carbon monoxide the main products.