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author：

Wang, P. (Wang, P..) [1] | Chen, R. (Chen, R..) [2] | Liao, H. (Liao, H..) [3] | Lin, H. (Lin, H..) [4] | Xu, Y. (Xu, Y..) [5] | Liu, B. (Liu, B..) [6] | Zong, X. (Zong, X..) [7] | Dai, Y. (Dai, Y..) [8] | Wu, L. (Wu, L..) [9] | Tan, L. (Tan, L..) [10] | Xie, Z. (Xie, Z..) [11] | Tang, Y. (Tang, Y..) [12]

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Scopus

Abstract：

The　utilization　of　Pt-based　catalysts　in　the　catalytic　conversion　of　propane　to　propylene　(PDH)　remains　pivotal　in　industrial　processes.　However,　the　scarcity　of　Pt　and　its　high　cost　necessitates　innovative　strategies　to　enhance　Pt　dispersion　and　catalytic　performance.　In　this　study,　we　present　an　approach　involving　the　in-situ　incorporation　of　Zn　cations　into　Silicalite-1　(S-1)　zeolite　through　one-pot　hydrothermal　synthesis,　which　facilitates　the　anchoring　of　atomically　dispersed　Pt　atoms.　The　synthesized　0.5Pt/Zn@S-1　catalyst　exhibits　the　dehydrogenation　performance　of　25　%　propane　for　approximately　34.2　%　propane　conversion　and　95.1　%　propylene　selectivity　(propylene　turnover　rate　of　14.2　s−1),　coupled　with　robust　stability　of　up　to　60　h　without　distinct　deactivation　under　a　WHSV　of　49.1　h−1.　Comprehensive　characterizations　reveal　the　formation　of　atomically　dispersed　Pt-Zn　catalytic　sites.　The　Pt　atoms　are　incorporated　with　the　Zn　cations　and　dense　silanol　nests.　This　unique　configuration　facilitates　a　synergistic　effect　between　Pt　and　Zn　for　dehydrogenation.　©　2024　Elsevier　Inc.

Keyword：

Deactivation Dehydrogenation Platinum Propane Propylene Silanol nest Sintering Synergistic effect Zeolite Zinc

Community：

  • [ 1 ] [Wang P.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Wang P.]equal contribution to this work.
  • [ 3 ] [Chen R.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 4 ] [Chen R.]equal contribution to this work.
  • [ 5 ] [Liao H.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 6 ] [Liao H.]equal contribution to this work.
  • [ 7 ] [Lin H.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 8 ] [Xu Y.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 9 ] [Liu B.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 10 ] [Zong X.]Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
  • [ 11 ] [Dai Y.]Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
  • [ 12 ] [Wu L.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 13 ] [Tan L.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 14 ] [Xie Z.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 15 ] [Tang Y.]Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou, 350108, China

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Source ：

Journal of Catalysis

ISSN： 0021-9517

Year： 2024

Volume： 437

6 . 5 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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