Abstract
AbstractThe catalytic activity of several iron additives was studied during the liquefaction of poplar wood suspended in water at 340°C. Iron powder gave good oil yields of ∼40%. The iron seemed to be an effective additive at the beginning of the reaction before being converted into Fe3O4. A systematic study of the influence of the initial pressure and volumetric composition of the gas phase (hydrogen‐helium mixtures) was also made. An initial pressure in the range 4.0‐6.0 MPa was necessary, but the nature of the gas had no significant effect on the yield and the quality of the oils obtained when the percentage amount of iron on dry wood was at least 14%. A stoichiometric equation for the liquefaction reaction is proposed which agrees with experimental results regardless of the initial gas composition.
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