Tolerance of MgO covered with Al2O3 to water and carbon dioxide

Abstract

A tolerance of MgO covered with Al₂O₃ to water and CO₂ was studied. The base catalytic activity of Al₂O₃/MgO was strongly depressed by coexisting water or CO₂.  The activity of Al₂O₃/MgO used for the decomposition of diacetonealcohol with H₂O was recovered by washing with acetone. The activity of catalyst exposing to CO₂ was recovered by treatment of heating, followed by exposing to water, and heating again. It was concluded that the tolerance of MgO to water and CO₂ was extremely increased by covered with Al₂O₃.