The catalytic activity of ultra fine metal sulfide on the hydrogenation of 1-methylnaphtharene (1-MN) was investigated. The metals used were Cobalt, Nickel, Iron andalloy of Iron and Cobalt. The average particle diameters of the metals were about 200A. The experiments were carried out in 50ml stainless steel autoclave at 350-450℃ under the initial hydrogen pressure of 7.9MPa. The structure of sulfided Cobalt was Co9S8, but that of sulfided Nickel was NixSy.
