Synthesis of Pure Alumina Mesoporous Materials
Alumina mesophases have been synthesized by reacting aluminum alkoxides and carboxylic acids with controlled amounts of water in low-molecular-weight alcoholic solvents. Calcination of these materials yields aluminas that are thermally stable to 1073 K and contain randomly ordered pores. Specific surface areas as high as 710 m2/g and narrow pore size distributions centered at 20 Å that do not contain "zeolitic" micropores are exhibited by the calcined solids.
© 1996 American Chemical Society. Received January 18, 1996. Revised Manuscript Received April 29, 1996. Publication Date (Web): July 11, 1996. The authors thank Mr. Paul Wagner for carrying out variable-temperature XRD measurements and Dr. Larry Beck for helpful discussions concerning the interpretation of the NMR spectra. Akzo America is gratefully acknowledged for financial support.