A novel Cu/ZnO-CNTs (carbon nano-tubes) nano-catalyst was prepared by a chemical reduction and wet impregnation method, and was applied to catalyze the steam reforming reaction of methanol. If one uses CNT as the support, the CNTs should be pre-treated by nitric acid and sulfuric acid at 60 degrees C for 24 h to create defects on its surface; the hydrophilicity of CNTs was improved by adding a suitable amount of ethanol. The catalysts were characterized by TEM, XRD, FTIR and TGA. A good dispersion of Cu nano-particles on the surface of CNTs with particle size about 10 nm is identified by TEM analysis. Using 23 wt% Cu80ZnO20-CNTs as the catalyst, we obtained the hydrogen yield for steam reforming of methanol of 83% at 280 degrees C and near 100% at temperatures higher than 320 degrees C with 1.5 of molar ratio of water to methanol. The higher hydrogen production (larger than 400 mmol/(s kg cat)), higher selectivity of CO2 and lower CO concentration were also observed. (c) 2006 Elsevier B.V. All rights reserved.