| 초록 |
This study includes the catalytic activity of nickel phosphide supported on silica, alumina, and KUSY in the hydrodesulfurization of 4,6-dimethyldibenzothiophene. The HDS performance was higher on the more dispersed catalysts in the order Ni2P/KUSY ＞ Ni2P/SiO2＞ Ni2P/Al2O3, and this is attributed to the increase in the number of and quality of active sites. EXAFS line shape analysis indicates the formation of a phospho sulfide phase which is favored for the catalysts with shorter Ni-Ni bond length particularly under high S in feed and at relatively high temperature. The phase is responsible for the high activity of the nickel phosphide catalysts. |
