Evidence of new Ni-O-K catalytic sites with superior stability for methane dry reforming

Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on role of potassium as a promoter in Ni-based catalysts reducing coke deposition during catalytic dry reforming. The provides new structural link between performance physicochemical properties. We identify Ni-O-K chemical states associated with high stability reforming process, evidenced by different characterization techniques. nickel particles form core surrounded phase layer ([email protected]) reduction catalyst. likely presents alkali-nickelate-type structure, which is stabilized oxidation state + 3. formation induces essential changes electronic, physical, structural, morphological properties catalysts, notably enhancing their long-term work thus directions designing more efficient gas-to-liquids processes.