Opptimization of Two-Stage Liquefaction of Tanito Harum coal with FeNi Catalyst Supported on Carbon Black

摘要

Two-stage liquefaction of Tanito Harum coal (Indonesian sub-bituminous coal) was examined in an autoclave of 50 mL capacity at various temperatures for the first stage and various reaction times for the first and second stages under the hydrogen pressure of 15 Mpa, using Fe(10 wt /100) Ni(10 wt /100) catalyst supported on carbon nanoparticles (Ketjen Black:KB). When the total reaction time in the first and second stages was fixe to 120 min, the best conditions of two- stage liquefaction were at 380 deg.C for 15 min in the first stage and then at 450 deg.C for 105 min in the second stage at a hydrogen pressure of 15 Mpa, providing the maximum oil yields of 80 and 66 wt /100 (daf coal base) with or without H-donor solvent, respectively.