PNNL

Abstract

Mesoporous aluminas are valued catalysts because they exhibit a combination of properties that allow both long life and activity. The surface area, acidity, stability, and pore size of the alumina directly influence lifetime and activity. Increased surface area and acidity, along with decreased pore size, lead to increased activity. However, these same characteristics also decrease lifetime. The properties of alumina are mutually dependent, and can be mutually opposed. Aluminas with better activity and longer life will result from a better understanding of these trends given the preparative method and thermal history.