Bimetallic\nMetal–Organic Framework-Derived Hybrid Nanostructures as High-Performance\nCatalysts for Methane Dry Reforming

Abstract

Syngas,\nconsisting of equimolar CO and H₂, is an important feedstock for large-scale production of a wide range of commodity chemicals including aldehyde,\nmethanol, ammonia, and other oxygenated chemicals. Dry reforming of\nmethane (DRM), proceeding by reacting greenhouse gases, CO₂ and CH₄, at high temperatures in the presence of a metal\ncatalyst, is considered one of the most environmentally friendly routes\nfor syngas production. Nevertheless, nonprecious metal-based catalysts,\nwhich can operate at relatively low temperatures for high product\nyields and selectivities, are required to drive the DRM process for\nindustrial applications effectively. Here, we developed NiCo@C nanocomposites\nfrom a corresponding NiCo-based bimetallic metal–organic framework\n(MOF) to serve as high-performance catalysts for the DRM process,\nachieving high turnover frequencies (TOF) at low temperatures (>5.7\ns^–1 at 600 °C) and high product selectivities\n(H₂/CO = 0.9 at 700 °C). The incorporation of Co in\nNi catalysts improves the operation stability and light-off stability.\nThe present development for MOF-derived nanocomposites opens a new\nhorizon for design of DRM catalysts.