Deoxygenation is a process of interest in the upgrading of various feedstocks including liquids derived from biomass. Wood liquefaction techniques, especially by pyrolytic processes, yield highly oxygenated products. Two catalytic routes have been proposed for deoxygenation of pyrolytic oils, namely, hydrotreatment with H/sub 2/ or CO + H/sub 2/ over HDS-type catalysts, and dehydration or decarboxylation over zeolite-type acid catalysts. It is proposed in this work to add to the zeolite catalyst a water-gas shift (WGS) function. Over such a bifunctional catalyst it is proposed to feed an oxygenate compound in a stream of carbon monoxide. In such a process, oxygen will be eliminated as CO/sub 2/ rather than H/sub 2/O, and if the WGS active catalyst possesses some hydrogenation properties under the operating conditions, the molecular hydrogen generated by WGS may be reincorporated into the growing hydrocarbon chains. The zeolite component selected is ZSM-5 due to its shape-selectivity properties for the formation of gasoline-range hydrocarbons and its resistance toward coke building. Iron oxide has been chosen as the second component of this dual function catalyst. Another important aspect of this study is the development of a new method for the deposition of iron on ZSM-5. The authors propose tomore » employ ferrocene, which has smaller dimensions than the pore diameter of ZSM-5. Moreover, this type of compound also offers the possibility of controlling the location of iron on the support. A bulky radical, like the dibenzoyl radical, can be added effectively as a substituent on the cyclopentadienyl rings. The large size of this new complex would prevent the diffusion of the organometallic compound into the pores, and consequently, it would allow fixing the iron on only the external surface of the ZSM-5 grains. 37 references.« less