A　new　class　of　activated　mesoporous　Al-MCM-41　layers　was　deposited　on　FeCrAl　metallic　foils　in　the　presence　of　cationic　surfactant　cetyltrimethylammonium　bromide　under　basic　conditions　by　an　in-situ　hydrothermal　method.　The　characterization　techniques　including　X-ray　diffraction,　nitrogen　adsorption　and　transmission　electron　microscopy,　as　well　as　field-emission　scanning　electron　microscopy　were　performed　to　investigate　the　pore　structure　and　surface　morphology　of　the　Al-MCM-41　layers.　The　Al-MCM-41　materials　are　of　amorphous　structure　but　exhibit　large　BET　surface　area　(up　to　757.0　m(2)/g)　and　pore　volume　(up　to　0.72　cm(3)/g),　as　well　as　a　mean　pore　diameter　of　3　nm.　The　layers　deposited　on　the　FeCrAl　foils　are　continuous　despite　with　a　few　of　holes　on　the　surface.