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author:

Deng, H. (Deng, H..) [1] | Sun, Q. (Sun, Q..) [2] | Zheng, W. (Zheng, W..) [3] | Li, B. (Li, B..) [4] | Zhuo, Z. (Zhuo, Z..) [5] | Wang, X. (Wang, X..) [6] | Zhang, Y. (Zhang, Y..) [7] | Tan, L. (Tan, L..) [8] | Tang, Y. (Tang, Y..) [9] | Wu, L. (Wu, L..) [10]

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Abstract:

The preparation of Co-based catalysts with a single, highly dispersed active site is challenging and crucial for the high-performance propane dehydrogenation (PDH) owing to harsh reaction conditions. Herein, the synergetic strategies including catalyst hydrothermal treatment and CO2 introduction are adopted to realize the highly dispersed and stable Td-Co(II) site and applied for PDH. According to systematic characterizations and catalytic performance evaluation, the facial hydrothermal treatment improves the C3H6 formation rate from 456 to 771 mmol C3H6 gCo−1 h−1 and catalyst stability via the transformation of Co3O4 species to the Td-Co(II) species. Meanwhile, the further introduction of CO2 into the PDH system as a protective reagent for Co state would facilitate PDH with superior catalytic performance with TOF of 700 h−1 and C3H6 formation rate of 970 mmol C3H6 gCo−1 h−1. It is revealed that the introduction of CO2 maintains Co state with the Td-Co(II) species via inhabiting the generation of metallic Co spices. © 2024 American Institute of Chemical Engineers.

Keyword:

carbon dioxide Co/S-1 hydrothermal treatment propane dehydrogenation Td-Co(II)

Community:

  • [ 1 ] [Deng H.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 2 ] [Sun Q.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 3 ] [Zheng W.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 4 ] [Li B.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 5 ] [Zhuo Z.]Zhejiang Baimahu Laboratory Co. Ltd., Hangzhou, China
  • [ 6 ] [Wang X.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 7 ] [Zhang Y.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 8 ] [Tan L.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 9 ] [Tang Y.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 10 ] [Wu L.]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China

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Source :

AIChE Journal

ISSN: 0001-1541

Year: 2024

Issue: 5

Volume: 70

3 . 5 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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