NOVELTY - A particulate composition having particle distribution size suitable for gasification in fluidized bed zone comprises intimate mixture of first carbonaceous feedstock as a biomass char; second carbonaceous feedstock as biomass and/or non-biomass; and gasification catalyst which in the presence of steam and under suitable temperature and pressure, exhibits gasification activity, where the first carbonaceous feedstock and second carbonaceous feedstock are present at a weight ratio of 5:95 to 95:5; and the gasification catalyst comprises a source of at least one alkali metal.    USE - For the preparation of the particulate compositions and for gasification of the particulate compositions in the presence of steam to form gaseous products, particularly methane (claimed).    ADVANTAGE - The particulate composition have a particle size of 25-2500 microns; and a residual moisture content of less than 4 wt.%.    DETAILED DESCRIPTION - A particulate composition having a particle distribution size suitable for gasification in a fluidized bed zone comprises an intimate mixture of a first carbonaceous feedstock that is a biomass char; a second carbonaceous feedstock that is a biomass and/or non-biomass; and a gasification catalyst which in the presence of steam and under suitable temperature and pressure, exhibits gasification activity where several gases including methane and at least one of hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons are formed, where the first carbonaceous feedstock and second carbonaceous feedstock are present in the particulate composition at a weight ratio of 5:95 to 95:5; and the gasification catalyst comprises a source of at least one alkali metal and is present in an amount sufficient to provide, in the particulate composition, a ratio of alkali metal atoms of the gasification catalyst to carbon atoms of 0.01 to 0.10, where the biomass char comprises at least a portion of the source of at least one alkali metal. INDEPENDENT CLAIMS are included for the following:    (1) a process (P1) for converting a particulate composition into several gaseous products involving supplying a particulate composition to a gasifying reactor; reacting the particulate composition in the gasifying reactor in the presence of steam and under suitable temperature and pressure to form several gaseous including methane and at least one hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons; and at least partially separating the gaseous products to produce a stream comprising a predominant amount of one of the gaseous products; and    (2) a process (P2) for preparing a particulate composition involving providing a first particulate carbonaceous feedstock that is a biomass char, a second particulate carbonaceous feedstock that is a biomass, and/or non-biomass, and optionally an alkali metal gasification catalyst; mixing the first particulate carbonaceous feedstock, the second particulate carbonaceous feedstock and, optionally, the alkali metal gasification catalyst to form a mixture; and optionally thermally treating the mixture under a flow of inert dry gas to form the particulate composition.