Preparation and Characterization of Mesoporous Al-MCM-41 Layers Deposited on FeCrAl Metallic Foils by an In-situ Hydrothermal Method

A new class of activated mesoporous Al-MCM-41 layers was deposited on Fe-CrAl 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 m2/g） and pore volume （up to 0.72 cm3/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.