Ferric oxide prepared from iron alum by hydrolysis with urea exhibited enhanced activities compared with Fe2O3 prepared by other methods; in particular, the activity for the dehydration of butan-2-ol was found to be 2000 times higher than that of Fe2O3 prepared from iron alum by hydrolysis with aqueous ammonia.
K. Tanabe, A. Kayo and T. Yamaguchi, J. Chem. Soc., Chem. Commun., 1981, 602 DOI: 10.1039/C39810000602
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