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author：

He, Yongsheng (He, Yongsheng.) [1] | Deng, Huihui (Deng, Huihui.) [2] | Zhang, Ying (Zhang, Ying.) [3] | Wang, Xiaofang (Wang, Xiaofang.) [4] | Zheng, Wenchun (Zheng, Wenchun.) [5] | Ren, Zhuangzhuang (Ren, Zhuangzhuang.) [6] | Tan, Li (Tan, Li.) [7] | Tang, Yu (Tang, Yu.) [8] | Wu, Lizhi (Wu, Lizhi.) [9]

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EI

Abstract：

Utilizing　the　confinement　effect　of　zeolite　pores　to　stabilize　active　sites　has　been　developed　for　the　improvement　of　catalytic　stability　and　performance.　Herein,　a　facile　strategy　is　proposed　to　synthesize　a　Sn　stabilizing　dispersed　Ptδ+　sites　confined　in　zeolite　pore　catalyst　via　Ar　calcination　for　propane　dehydrogenation　(PDH).　0.2Pt/0.5Sn-S-1-Ar　shows　excellent　propylene　formation　rate　of　10.0　mol　C3H6·gPt−1·h−1　and　propylene　selectivity　higher　than　99.5%　at　450　°C,　and　the　superior　catalyst　stability　in　200　h　on-stream.　And　it　has　the　lowest　apparent　activation　energy　barrier　of　18.45　KJ/mol　over　Pt-based　catalyst　for　PDH　to　our　knowledge.　According　to　systemic　characterizations,　it　is　demonstrated　that　the　implantation　of　Sn　into　Silicalite-1　framework　before　introducing　Pt　is　essential　to　generate　the　highly　dispersed　Ptδ+　species　confined　in　zeolite　pore,　and　the　Ptδ+　species　confined　in　zeolite　pore　with　stronger　propane　adsorption　and　propylene　desorption　ability　is　responsible　for　superior　PDH　performance.　©　2023　Elsevier　Ltd

Keyword：

Activation energy Catalyst selectivity Dehydrogenation Propane Propylene Temperature Zeolites

Community：

  • [ 1 ] [He, Yongsheng]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Deng, Huihui]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Zhang, Ying]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 4 ] [Wang, Xiaofang]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 5 ] [Zheng, Wenchun]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 6 ] [Ren, Zhuangzhuang]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Tan, Li]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 8 ] [Tang, Yu]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 9 ] [Wu, Lizhi]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou; 350108, China

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ISSN： 0016-2361

Year： 2023

Volume： 352

6 . 7

JCR@2023

6 . 7 0 0

JCR@2023

ESI HC Threshold：35

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 8

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

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