Preparation and Gas Permeation of Supported γ-Al2O3 Membranes Used as Substrate Layer for Microporou

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γ-Al2O3 membranes were successfully deposited on the top of porous α-Al2 O3 support by sol-gel process and characterized by means of XRD, SEM, N2 adsorption and gas permeation. The γ-Al2O3 membranes, free of pin-holes and cracks, adhere tightly to the sup
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