Abstract
<p class="Bodytext1">The catalytic properties of plasma-chemically and thermally treated Bi<sub>4</sub>V<sub>2-2x</sub>Cu<sub>2x</sub>O<sub>11–δ</sub> with х= 0.00–0.16 (BICUVOX) in the transformation of isobutanol are studied. Plasma treatments lead to the total deactivation of the active sites of dehydration reaction, and the alcohol is converted with 100% selectivity into aldehyde. Activity of the dehydrogenation of alcohol after PCT increases in ~ 1.7 times on samples with x<sub>Cu</sub>=0.04-0.06 (a.b phases) compared to the initial samples. Similar values which were found for the samples with x<sub>Cu</sub>=0.0-0.06, including the double vanadate, suggests that PCT affects the ceramic matrix with Bi, O and V elements. Addition of small amounts of copper does not change this effect. </p>