Selective exposure of the VO species on the surface of vanadium oxide supported on titania and alumina

Abstract

By measuring the quantity of surface VO species on V₂O₅–TiO₂ and V₂O₅–Al₂O₃ catalysts containing various amounts of V₂O₅, we have found that, for V₂O₅–TiO₂ catalysts, the (010) face of V₂O₅ is selectively exposed to the surface but, for V₂O₅–Al₂O₃ and unsupported catalysts, various crystal faces of V₂O₅ are exposed in addition to the (010) face.