| 초록 |
The catalytic activities of the dispersed NixW(1-x)S2 catalysts were investigated at 693K, 9.5MPa H2 with the same amount of catalyst loading of 0.113 mmol as a metal basis. The catalysts were prepared in situ in the VR HCK using nickel acetylacetonate and tungsten hexacarbonyl as Ni and W precursors, respectively. Structural properties of the dispersed catalysts were characterized by extended X-ray absorption fine structure (EXAFS) and transmission electron microscopy (TEM), which confirmed the formation of well dispersed NixW(1-x)S2 phase in size ranges of 8-10 nm. Moreover, it was demonstrated that the alloyed metal sulfides of NixW(1-x)S2 feature a promotional activity in the VR HCK, showing higher TOFS in the VR HCK than mono-metal sulfides. |
