Novel gradient porous mixed cobalt-copper-manganese mixed oxides modified ZSM-5 membrane catalysts were synthesized by the incipient wetness impregnating method. The paper-like sintered stainless steel fibers (PSSF) support was fabricated by the wet lay-up papermaking/sintering process, and the ZSM-5 membranes were synthesized on the surface of stainless steel fibers by using secondary growth process. These novel modified membrane catalysts have been characterized by a series of techniques including SEM, EDS mapping, XRD, N-2 adsorption desorption, XPS and H-2-TPR method. Catalytic performances of isopropanol oxidation over these novel catalysts were investigated. Among the series of catalysts, the as prepared Co-Cu-Mn (1:1:1)/ZSM-5/PSSE catalysts have exhibited the best catalytic activity, demonstrating by a lowest T-90% at 210 degrees C. The gradient porous modified ZSM-5 membrane as high efficiency catalyst can offer a much higher catalytic activity, excellent reaction stability, and higher contact efficiency. (c) 2014 Elsevier Ltd. All rights reserved.