| 초록 |
Structural characteristics of Co-B on/into nickel foam support and the influence of heat treatment on the generation of hydrogen from sodium borohydride (NaBH4) solution were reported. Analyzing morphological and structural observations such as SEM, XRD, XPS, BET, PSD, TG/DSC, FT-IR and ICP, amorphous Co-B structure prepared by simple dipping reduction method was maintained by the calcination temperature of around 250oC. Amorphous Co-B structure was changed into crystalline one above 300oC. With temperature control of batch-type reactor at 40oC, maximum hydrogen generation rate of 7300 ml/min • g was observed on a Co-B/Ni foam catalyst treated at 250oC and it is about 50% higher than as-made Co-B catalyst and crystalline Co-B/Co metal structure formed above 300oC. |
