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author:

Deng, Huihui (Deng, Huihui.) [1] | Sun, Qin (Sun, Qin.) [2] | Zheng, Wenchun (Zheng, Wenchun.) [3] | Li, Baozhen (Li, Baozhen.) [4] | Zhuo, Zuoxi (Zhuo, Zuoxi.) [5] | Wang, Xiaofang (Wang, Xiaofang.) [6] | Zhang, Ying (Zhang, Ying.) [7] | Tan, Li (Tan, Li.) [8] | Tang, Yu (Tang, Yu.) [9] | Wu, Lizhi (Wu, Lizhi.) [10]

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EI

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 Catalyst activity Cobalt compounds Dehydrogenation Propane

Community:

  • [ 1 ] [Deng, Huihui]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 2 ] [Sun, Qin]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 3 ] [Zheng, Wenchun]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 4 ] [Li, Baozhen]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 5 ] [Zhuo, Zuoxi]Zhejiang Baimahu Laboratory Co. Ltd., Hangzhou, China
  • [ 6 ] [Wang, Xiaofang]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 7 ] [Zhang, Ying]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 8 ] [Tan, Li]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 9 ] [Tang, Yu]Institute of Molecular Catalysis and In-situ/operando Studies, College of Chemistry, Fuzhou University, Fuzhou, China
  • [ 10 ] [Wu, Lizhi]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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