Catalytic performance of different carbon materials for hydrogen production in sulfur–iodine thermochemical cycle

摘要: Abstract This study examines four carbon materials through a series of characterization methods and hydrogen iodide (HI) decomposition test. Applying traditional structure to facilitates the quantitative analysis samples. The X-ray diffraction Raman spectroscopy results indicate that lesser stacked graphite-like layers shorter lateral diameter La result in higher disordering structure. However, quantity active sites is not determined only by degree disordering. aliphatic inter-layer correlations decreases amount graphite occupies its edge, thereby inhibiting formation edge materials. A low ratio amorphous with high corresponds concentration surface associated edges layers. catalytic performance combined demonstrates are HI decomposition. computational chemistry also conducted illustrate dominant role reaction. calculation build detailed mechanism over verify adsorbed I on facilitate