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author:

Wu, Lizhi (Wu, Lizhi.) [1] (Scholars:吴立志) | Ren, Zhuangzhuang (Ren, Zhuangzhuang.) [2] | He, Yongsheng (He, Yongsheng.) [3] | Yang, Meng (Yang, Meng.) [4] | Yu, Yunkai (Yu, Yunkai.) [5] | Liu, Yueming (Liu, Yueming.) [6] | Tan, Li (Tan, Li.) [7] (Scholars:谭理) | Tang, Yu (Tang, Yu.) [8] (Scholars:汤禹)

Indexed by:

EI SCIE

Abstract:

Propane nonoxidative dehydrogenation (PDH) is a promising route to produce propylene with the development of shale gas exploration technology. Co-based catalysts with low cost and low toxicity could activate C-H effectively, but they suffer from deactivation with coke formation. In this work, a catalyst formed by incorporating highly dispersed Co sites into a Silicalite-1 zeolite framework (Co-Silicalite-1) is synthesized by a hydrothermal protocol in the presence of ammonia, which exhibits superior propane dehydrogenation catalytic performance with 0.0946 mmol C3H6.s(-1).g(Co)(-1) and propylene selectivity higher than 98.5%. It also shows outstanding catalytic stability and coking resistance in a 3560 min time-on-stream. Combined characterization results demonstrate that the tetrahedrally coordinated Co2+ site serves as the PDH catalytic active site, which is stabilized by Si-O units of the zeolite framework. Incorporation of Co sites into the zeolite framework could avoid the reduction of Co species to metallic Co. Moreover, the catalytic performance is improved by the enhanced propane adsorption and propylene desorption.

Keyword:

cobalt coking-resistant propane dehydrogenation propylene Silicalite-1

Community:

  • [ 1 ] [Wu, Lizhi]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 2 ] [Ren, Zhuangzhuang]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 3 ] [He, Yongsheng]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 4 ] [Yang, Meng]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 5 ] [Tan, Li]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 6 ] [Tang, Yu]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China
  • [ 7 ] [Yu, Yunkai]East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
  • [ 8 ] [Liu, Yueming]East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

Reprint 's Address:

  • 吴立志 汤禹

    [Wu, Lizhi]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China;;[Tang, Yu]Fuzhou Univ, Coll Chem, Inst Mol Catalysis & In Situ Operando Studies, Fuzhou 350108, Peoples R China

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Source :

ACS APPLIED MATERIALS & INTERFACES

ISSN: 1944-8244

Year: 2021

Issue: 41

Volume: 13

Page: 48934-48948

1 0 . 3 8 3

JCR@2021

8 . 5 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 56

SCOPUS Cited Count: 62

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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