Rhodium-technetium catalysts in the dehydrogenation of cyclohexane

Article abstract of DOI:10.1007/BF00697130

The catalytic properties of a Rh-Tc/support (γ-Al2O3, SiO2, or MgO) system in the dehydrogenation of cyclohexane have been investigated.A nonadditive increase in the catalytic activity of bimetallic catalysts in comparison with monometallic systems has been established.This effect depends on the ratio of the amounts of the supported metals and on the nature of the support.Diffuse reflectance spectra showed the presence of ionic forms of the metals in the bimetallic catalysts.Analysis of the catalytic and optical properties allowed one to draw the conclusion that the synergistic effect is explained by the formation of RhxTcy clusters. - Kwy words: cyclohexane, dehydrogenation, bimetallic catalysts; diffuse reflectance spectra; synergistic effect.