Abstract
Fine iron sulfide particles were prepared in a vibrating ball mill by the reaction of iron ball with sulfur powder under high temperature and high pressure of hydrogen.
The iron sulfide was estimated to be produced on surface of ball by the following reactions.
H2+S=H2S
Fe+H2S=FeS+H2
During the reactions of hydrogenation, hydro-cracking and/or coal liquefaction, the particles of iron sulfide were worn simultaneously from sulfurized surface of iron ball in the vibrating reactor.
The iron sulfide particles were characterized as catalyst on reaction activity of hyd-rogenation of phenanthrene and coal liquefaction. The conversions of phenanthrene on hydrogenation and coal liquefaction increased with increase of the in-situ prepared catalyst. Yields of hexane solubles of coal liquids by the in-situ prepared catalyst were found to be equal or better than that by conventional catalyst of iron oxide and sulfur.
And hydrogen consumption by use of the in-situ prepared catalyst was less of that by the conventional catalyst at the same yield of coal derived oil.
