CATALYTIC BEHAVIOR OF BORIA-ALUMINA PREPARED BY CHEMICAL VAPOR DEPOSITION TECHNIQUE

Abstract

Catalytic behavior of boria-alumina greatly changed with B₂O₃ content. When B₂O₃≤12 wt%, both boria-aluminas (H₀≥−8.2) obtained by CVD and impregnation methods showed almost the same catalytic activity, but at higher B₂O₃ contents (≥15 wt%, H₀≥−3.0) the CVD boria-alumina exhibited higher catalytic efficiency, e.g. for the vapor-phase Beckmann rearrangement of cyclohexanone oxime.