Co-loading Pd and CeO₂ on Silicalite-1 as High-performance Catalyst for Methane Dry Reforming Reaction

Abstract

The methane dry reforming (DRM) reaction can convert CO₂ and CH₄, both of which contribute to climate change, into syngas, which holds great significance in mitigating specific environmental issues stemming from the greenhouse effect. Nonetheless, the challenges that persist include the substantial energy consumption and the catalyst’s susceptibility to deactivation, both of which necessitate solutions. Herein, we developed a catalyst, PdCe/S1, featuring small-sized Pd species and CeO₂ stabilized on pure silicon zeolite (silicalite-1), which is employed in the DRM reaction. It can achieve 97% CH₄ conversion and 98% CO₂ conversion at 750 °C, surpassing binary Pd/CeO₂ and Pd/S1 catalysts. The small size of CeO₂ stabilized by silicalite-1 promotes oxygen defects formation and enhances the CO₂ adsorption capacity. The introduction of silicalite-1 further enhances the interaction between Pd and CeO₂, boosting DRM performance.

Keywords

Dry reforming of methane / CeO₂ / Zeolite

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RIGHTS & PERMISSIONS

Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH