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The effect of sulfate species in propane dehydrogenation over Co/Al 2 O 3 catalysts was studied. On the one hand, the interaction between SO 42− and cobalt species leads to better dispersed cobalt oxide and restrains the reduction to metallic Co species, thereby inhibiting cracking reaction. On the other hand, the initial C–H bond activation and scission are facilitated...
Co/Al2O3 catalysts with different Co3O4 loadings were studied in catalytic dehydrogenation of propane. The optimal results of 21.5 wt% propylene yield and 83.6 % selectivity were obtained at 5 wt% loading. XRD, DRS and XPS results showed that at loadings below 10 wt%, the “surface Co spinel” formed from tetrahedral Co2+ ions during the course of reaction constituted the active site for dehydrogenation...
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