NOVELTY - A method for the production of fuel from biogenic raw materials (I) involves reacting pulverised (I) at elevated temperature in a carrier liquid (II) with a mineral catalyst (III) comprising aluminum oxide containing montmorillonite, illite and/or smectite, and then separating the resulting fuel from the reaction mixture.    USE - Catalyst compositions comprising carrier liquid and aluminum oxide containing montmorillonite, illite and/or smectite are used for the production of fuel from biogenic raw materials by the method according to the invention (claimed). Also claimed is the use of aluminum oxide containing montmorillonite, illite and/or smectite as a catalyst for this process. Used, e.g. for the production of diesel oil from wood.    ADVANTAGE - Enables the production of fuel from biogenic raw materials with moderate process temperatures and/or low operating costs and/or higher yields and/or improved product quality.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for    (1) plant for carrying out this process comprising a first pulverizer (2) for converting (I) (especially wood) into chips, a dryer (3), a heated impregnating tank (6) containing (II), a second pulveriser (17) for breaking down the structure to microfibrils, a mixer (19) in which the catalyst (III) is added, a heated reactor (11) in which the polymer structure and lignin of the cellulose are decomposed, a heated ageing tank (27) in which monomers formed in (11) are polymerised, a heated evaporator (34) connected via a separator (41) to a combustion engine (45) in a heating and power station, and a heat exchanger unit (58, 59) which is connected via gas/vapour lines (12, 25, 30, 38, 53) to components (6), (11), (27) and (34)    (2) plant for the production of fuel by the method described, comprising (in this order) a mixer, a heated reactor, a heated ageing tank and a heated evaporator    (3) a catalyst composition containing carrier liquid (II) and catalyst (III) as above    .