The processes of obtaining selective vanadium-containing layers on the outer surface of tubular ceramic membranes based on a-Al2O3 for use in the petrochemical industry have been studied. A layer of V2O5?1.6H2O deposited on the outer surface of the ceramic membrane was obtained by the sol-gel method. The temperature of the heat treatment varied from 400 to 700 C. The chemical stability in a liquid medium of membranes with a deposited layer subjected to heat treatment at 650 C has been studied. It was found that the chemical stability of membranes with a V2O5 deposited layer is in the pH range from 5 to 8. The optimal heat treatment temperature for obtaining a layer with high adhesion to the substrate was 650 C.
Hein Myat Lwin – PhD student, Department of Colloidal Chemistry, Mendeleev University of Chemical Technology of Russia (Mendeleev University), Moscow, Russia
Oksana V. Yarovaya – Candidate of Chemical Sciences, Associate Professor, Department of Colloidal Chemistry, Mendeleev University of Chemical Technology of Russia (Mendeleev University), Moscow, Russia
Marina O. Senina – Candidate of Technical Sciences, Associate Professor, Department of Chemical Technology of Ceramics and Refractories Mendeleev University of Chemical Technology of Russia (Mendeleev University), Moscow, Russia
Mihail Yu. Kuznecov – deputy head of Department, Department of Expertise of Materials, Substances and Products, Russian Federal Center for Forensic Science named after Professor A. R. Shlyakhov of Ministry of Justice, Moscow, Russia
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DOI: 10.14489/glc.2025.03.pp.026-035
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