Catalytic inorganic membranes were prepared by depositing active materials over porous alumina tubes, using sol-gel and impregnation techniques. The concentration profiles of the different species in the membrane were obtained using XPS. Also, the stability of the membranes was tested by subjecting the samples to different thermal treatments. Different preparation methods are compared with the aim of attaining controlled distributions of the active phases in the membrane. Finally, some reaction results are also presented.