Preparation and characterization of mesoporous Al-MCM-41 layers deposited on FeCrAl metallic foils by an in-situ hydrothermal method

Abstract

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 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.

Keywords

mesoporous Al-MCM-41 silica layers / FeCrAl metallic foils / hydrothermal synthesis / porosity / deposition

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