论文部分内容阅读
V/SiO_2 catalysts compared to Cr/SiO_2 catalysts were studied for dehydrogenation of n-butaneto butenes.Several methods for characterization of catalysts such as FT-IR,UV-vis and Raman spec-troscopies were used.Some differences between two catalysts were showed,including the performancesof catalysts,distribution of products and mechanism of reactions.The results showed that prepared cata-lysts with 12m% of active component loading all demonstrated best conversion of n-butane to butene ata reaction temperature of around 590℃.Two different reaction mechanisms were mentioned to wellexplain why iso-butene was produced on V/SiO_2 catalysts but not on Cr/SiO_2 catalysts.
V / SiO 2 catalysts compared to Cr / SiO 2 catalysts were studied for dehydrogenation of n-butaneto butenes. Several methods for characterization of catalysts such as FT-IR, UV-vis and Raman spec-troscopies were used. Some differences between two catalysts were showed , including the performances of catalysts, distribution of products and mechanism of reactions. The results showed that prepared cata-lysts with 12m% of active component loading the demonstrated best conversion of n-butane to butene ata reaction temperature of around 590 ℃. Two different reaction mechanisms were mentioned to wellexplain why iso-butene was produced on V / SiO 2 catalysts but not on Cr / SiO 2 catalysts.