In-Situ Impregnation Of Beta-Feooh On Coal By Solid-State Reaction Toward Direct Coal Liquefaction

Herein, beta-FeOOH nanoparticles supported on coal (beta-FeOOH@C) were prepared by a solid-state in-situ impregnation and tested for the direct coal liquefaction (DCL) process. The beta-FeOOH nanoparticles with similar to 10-50 nm were uniformly loaded over coal through a solid-state reaction among ferrous chloride, sodium hydroxide and coal. The obtained beta-FeOOH@C solid showed enhanced catalytic performance for DCL compared with unsupported beta-FeOOH nanoparticles. The conversion and oil yield achieved by beta-FeOOH@C were 92.88 and 48.78% in the catalytic liquefaction of Dahuangshan lignite. The solid-state in-situ impregnation with coal as support shows great potential to prepare effective iron-based catalysts toward practical DCL.