Conversion of cyclohexene on supported molybdenum- and tungsten-oxide catalysts

The hydro-dehydrogenation of cyclohexene has been studied on: alumina supported Co-, Ni-, Pd-, Pt-promoted and non promoted MoO_x, monometallic Co, Ni and Pt, two - alumina and silica-alumina supported - Ni-promoted WO_x-s. Two groups of characteristically different catalytic behavior of the promoted MoO_x and WO_x samples were identified dependent of the presence and nature of the zerovalent metal on the catalyst surface. No additivity of activities but some interaction between metals and oxides was expressed in the catalytic behavior of the M(8-10)MoO_x catalysts. This revised version was published online in June 2006 with corrections to the Cover Date.