Nonhydrolytic routes to alumina materials

Mgr. Zdeněk Moravec


Nonhydrolytic processes emerged as promising routes for the preparation of new materials.  One
family of materials is based on alumina which is very important for many industrial applications.


The main subject of our research was the study of reactions of dichloroethylalane with various
alcohols, such as cyclohexanol, n-butanol, and phenols leading to the preparation of the precursors
for alumina materials. From these reactions, we obtained a series of alumina chloro-alkoxides with
variety of structural arrangements. Products were characterized by multinuclear NMR, IR and Raman
spectroscopy, thermal analysis, and single-crystal X-ray analysis.

The transformation of these compounds to aluminum oxide materials was performed by a thermal
decomposition processes in high boiling solvents. The reaction proceeds by alkylhalide elimination
mechanism. Alumina was characterized by TEM, IR spectroscopy, powder XRD, and BET measurements.



References:

Moravec Z., Sluka R., Necas M., Jancik V., Pinkas J.; Inorg. Chem. 2009, 48, 8106-8114