| 摘要 |
A carbon bearing material (CO, CO2 or mixtures thereof) is hydrogenated to methane in the presence of a catalyst consisting of a metallic mesh type core, having a Raney metal exterior surface derived from a NixM1-xAl3 beta structured crystalline precursory layer (M being a catalyst enhancer e.g. molybdenum, titanium tantalum or ruthenium; x: 0,80-0,95). The reactants are preheated to at least 160 DEG C and then maintained at 250-475 DEG C, the pressure being 3,43-6,86 bar. …<??>The catalyst is prepared by coating a mesh structure with an alloy of nickel with the catalytic enhancer and aluminium, then heating it to 660-750 DEG C to allow infusing of aluminium in the mesh structure and leaching out the residual aluminium from the alloy. |
