Effects of Calcination on the Structure and Performance of Propane Dehydrogenation over IrSn Bimetallic Nanoparticles
Propane dehydrogenation(PDH)is one of the most promising technology for propylene production and utilization of shale gas.Usually,supported Pt-Sn bimetallic catalysts for dehydrogenation process suffer from rapid deactivation and complicated regeneration process.Metal Ir as active metal have been shown high activity for C-H bonds activation,but there is rare report of supported Ir solid catalysts for PDH.In this work,by controlling the synthesis conditions of IrSn bimetallic catalyst,the effects of the calcination process on the structure and propane dehydrogenation performance of bimetallic nanoparticles were investigated.The results show that the process of calcination not only leads to severe sintering of catalyst nanoparticles,but also reduces the alloying of nanoparticles,which greatly affects the catalytic performance.
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