典型文献
Boosting selectivity and stability on Pt/BN catalysts for propane dehydrogenation via calcination&reduction-mediated strong metal-support interaction
文献摘要：
Propane dehydrogenation(PDH)provides an alternative route for producing propylene.Herein,we demonstrates that h-BN is a promising support of Pt-based catalysts for PDH.The Pt catalysts supported on h-BN were prepared by an impregnation method using Pt(NH3)4(NO3)2 as metal precursors.It has been found that the Pt/BN catalyst undergoing calcination and reduction is highly stable in both PDH reaction and coke-burning regeneration,together with low coke deposition and outstanding propylene selectivity(99％).Detailed characterizations reveal that the high coke resistance and high propylene selectivity of the Pt/BN catalyst are derived not only from the absence of acidity on BN support,but also from the calcination-induced and reduction-adjusted strong metal-support interaction(SMSI)between Pt and BN,which causes the partial encapsulation of Pt particles by BO* overlayers.The BOx overlayers can block the low-coordinated Pt sites and constrain Pt particles into smaller ensembles,suppressing side reactions such as cracking and deep dehydrogenation.Moreover,the BOx overlayers can effectively inhi-bit Pt sintering by the spatial isolation of Pt during periodic reaction-regeneration cycles.In this work,the catalyst support for PDH is expanded to nonoxide BN,and the understanding of SMSI between Pt and BN will provide rational design strategy for BN-based catalysts.
文献关键词：
中图分类号：
作者姓名：
Yaoxin Wang;Jiandian Wang;Ping Zheng;Changyong Sun;Junyin Luo;Xiaowei Xie
作者机构：
Key Laboratory of Clean Chemical Technology of Guangdong Regular Higher Education Institutions,School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,Guangdong,China
文献出处：
引用格式：
[1]Yaoxin Wang;Jiandian Wang;Ping Zheng;Changyong Sun;Junyin Luo;Xiaowei Xie-.Boosting selectivity and stability on Pt/BN catalysts for propane dehydrogenation via calcination&reduction-mediated strong metal-support interaction)[J].能源化学,2022(04):451-457
A类：
overlayers,BOx,nonoxide
B类：
Boosting,selectivity,stability,Pt,BN,catalysts,propane,dehydrogenation,via,calcination,reduction,mediated,strong,metal,interaction,Propane,PDH,provides,alternative,route,producing,propylene,Herein,demonstrates,that,promising,supported,were,prepared,by,impregnation,method,using,NH3,NO3,precursors,It,has,been,found,undergoing,highly,stable,both,coke,burning,regeneration,together,low,deposition,outstanding,Detailed,characterizations,reveal,resistance,derived,not,only,from,absence,acidity,but,also,induced,adjusted,SMSI,between,which,causes,partial,encapsulation,particles,can,block,coordinated,sites,constrain,into,smaller,ensembles,suppressing,side,reactions,such,cracking,deep,Moreover,effectively,inhi,bit,sintering,spatial,isolation,during,periodic,cycles,In,this,work,expanded,understanding,will,rational,design,strategy
AB值：
0.499147
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