Abstract
Abstract The resistance to deactivation of aluminas(γ-Al 2 O 3 pure or modified with F -1 , Zn ++ , Na + ) and phosphates(B-PO 4 > Al-PO 4 , Ca-Ni-PO 4 ) catalysts was investigated with pure 1-butanol under various reaction conditions. In the corresponding laboratory tests, our catalysts are not subject to deactivation. An activity decrease and selectivity changes were observed after a run with synthetic acetonobutylic mixtures containing, in addition to 1-butanol, acetone, ethanol, acetic acid and water. After the catalytic tests, the coke content was low. The combined role of the presence of water and organic molecules other than 1-butanol (especially acetic acid) in the feed explains the catalytic activity decrease.
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