The Influence of Plasma Chemical Treatment
of CopperRhenium Catalysts Deposited on Sibunite
on Their Dehydrogenating Activity

Z. V. Pskhu*, M. A. Ryashentseva**, T. V. Yagodovskaya***,
V. D. Yagodovskii*, and O. V. Egorova*

*Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow, 117198 Russia

** Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii pr. 47, Moscow, 117334 Russia

*** Faculty of Chemistry, Moscow State University, Vorob’evy gory, Moscow, 119899 Russia

Received December 10, 2002

Abstract—At 450–600 K, 2% copper and copper–rhodium catalysts deposited on sibunite and containing
0.25–2.0% rhenium were selective in the dehydrogenation of isopropyl alcohol to acetone and hydrogen. After
treatment of the copper–sibunite catalyst in a glow-discharge plasma, the yield of acetone decreased, whereas
similar treatment of the copper–rhenium–sibunite catalyst increased the yield of acetone. A multiple increase
in activity was observed as a result of plasma chemical treatment, performing series of experiments with iso-
propyl alcohol transformations, and the reduction of catalysts with hydrogen. The suggestion was made that
catalytically active centers were Cu_xRe_y-type clusters containing the H atom and Cu–Re bonds.

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