Redox Dynamics of Active VO _x Sites Promoted by TiO _x during Oxidative Dehydrogenation of Ethanol Detected by Operando Quick XAS.

ABSTRACT: Titania-supported vanadia (VO _x /TiO₂) catalysts exhibit outstanding catalytic in a number of selective oxidation and reduction processes. In spite of numerous investigations, the nature of redox transformations of vanadium and titanium involved in various catalytic processes remains difficult to detect and correlate to the rate of products formation. In this work, we studied the redox dynamics of active sites in a bilayered 5% V₂O₅/15% TiO₂/SiO₂ catalyst (consisting of submonolayer VO _x species anchored onto a TiO _x monolayer, which in turn is supported on SiO₂) during the oxidative dehydrogenation of ethanol. The VO _x species in 5% V₂O₅

SUBMITTER: Zabilska A 

PROVIDER: S-EPMC8977985 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature