Features of cyclohexane dehydrogenation on rare earth oxides modified by technetium

Cyclohexane dehydrogenation on Y, Yb, Er, Nd oxides modified by technetium (o.14 - 5.1%) is studied. Catalysts have been obtained by impregnation of rare earth oxides by the ammonium pertechnate solution and subsequent hydrogen reduction at 700 deg C. A chemisorption catalysts investigation is carried out. All catalysts are large-dispersed. Hydrogen chemisorption can be used for calculating specific surface and dispersion of Tc if its content is not too low. Cyclohexane dehydrogenation on the above catalysts proceeds with high selectivity (98%). The only reaction products are benzene and hydrogen. With Tc concentration increase the cyclohexane transformation degree grows. It is shown that in the investigated systems technetium plays a part of a promotes of the low-activity rare earth oxide