Hydro-Liquefaction of Tile-Like Barzas Coals in the Presence of Some Transition Metal Additives

¹ Federal Research Center of Coal & Coal Chemistry, SB RAS, 650000 Kemerovo, Russia
² T.F. Gorbachev Kuzbass State technical University, 650000 Kemerovo, Russia
³ Kutateladze Institute of Thermophysics, SB RAS, 630090 Novosibirsk, Russia

^* Corresponding author: ipetrov@kemcity.ryu

Abstract

Using a laboratory micro-autoclave (of ~ 20 cm³ volume), the effects of transition metal additives (MoO₃, Fe2O3 and commercial AlCoMo catalyst) on the thermal transformations of tile-like Barzas coals (sapromixites) in a hydrogen medium at T ~ 475°C and P ~ 6.0-7.5 MPa have been studied. It has been shown that catalytic additives under investigation somewhat suppress gas formation processes, facilitating the increase in H/C atomic ratios and in the amount of alkyl-containing structures in resin-like solid products of Barzas coal hydro-liquefaction. Maximal yields of “coal liquids” (maltenes + asphaltenes) (~ 35 wt.%, daf basis) were obtained during the heat treatment of sapromixites in the presence of bb1 wt.% MoO₃.