Effect of Strontium Addition to Platinum Catalyst for Propane Dehydrogenation

查看全文 作　　者：Huang [1,2]Li;Zhou [1]Shijian;Zhou [1]Yuming;Zhang [1]Yiwei;Zhang [1]Shaobo;Xu [2]Jun

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University;[2]Nanjing Wolaide Energy Technology Co.,LTD

出　　处：《China Petroleum Processing & Petrochemical Technology》索引2012年第14卷第3期,共8页

基　　金：The Production and Research Prospective Joint Research Project (BY2009153);The Science and Technology Support Program (BE2008129) of Jiangsu Province of China;the National Nature Science Foundation of China (50873026,21106017) for financial support 摘　　要：PtSnSr/HZSM-5 catalysts with different amounts of strontium were prepared by sequential impregnation method,and characterized by BET analysis,TEM,NH3-TPD,H2-TPR,TPO and TG techniques.The results showed that the addition of strontium could modify the characteristics and properties of both acid function and metal function of Pt-Sn-based catalysts.In this case,PtSnSr/HZSM-5 catalyst with an appropriate amount of Sr(1.2%) showed higher catalytic activity and lower amount of coke deposits than PtSn/HZSM-5 catalyst.However,excessive loading of Sr could facilitate the reduction of Sn,which was unfavorable to the reaction.Afterwards,1.0 m% of Na was added into the PtSnSr(1.2%)/HZSM-5 catalyst to improve the catalytic performance in propane dehydrogenation,and this catalyst displayed the best catalytic performance during our experiments.After having been subjected to reaction for 5h,the PtSnNa(1.0%)Sr(1.2%)/HZSM-5 catalyst had achieved a higher than 95% selectivity towards propene along with a corresponding propane conversion rate of 32.2%. 关键词：铂催化剂丙烷脱氢 HZSM-5催化剂 NH3-TPD 锶脱氢反应 PTSN 催化性能

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Effect of Strontium Addition to Platinum Catalyst for Propane Dehydrogenation

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