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Efficient nickel-based catalysts for amine regeneration of CO2 capture: From experimental to calculations verifications
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  • Qiang Sun,
  • Yu Mao,
  • Hongxia Gao,
  • Teerawat Sema,
  • Sen Liu,
  • Zhiwu Liang
Qiang Sun
Hunan University

Corresponding Author:[email protected]

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Yu Mao
Hunan University
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Hongxia Gao
Hunan university
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Teerawat Sema
Chulalongkorn University
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Sen Liu
Hunan University
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Zhiwu Liang
Hunan University
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High heat duty is an urgent challenge for industrial applications of amine-based CO2 capture. In this work, we report a novel, stable, efficient, and inexpensive Ni-HZSM-5 catalyst to reduce the heat duty. The density functional theory (DFT) calculations successfully explain the catalytic performance. The catalytic activity associates with the combined properties of MSA × B/L × Ni2+. The 7.85-Ni-HZ catalyst presents an excellent catalytic activity for the CO2 desorption: it increases the amount of desorbed CO2 up to 36%, reduces the heat duty by 27.07% compared with the blank run, and possesses high stability during five cyclic tests. A possible catalytic mechanism for the Ni-HZSM-5 catalysts through assisting carbamate breakdown and promoting CO2 desorption is proposed based on experimental results and theoretical calculations. Therefore, the results present that the 7.85-Ni-HZ catalyst significantly accelerates the protons transfer in CO2 desorption and can potentially apply in industrial CO2 capture.
25 Jun 2021Submitted to AIChE Journal
28 Jun 2021Submission Checks Completed
28 Jun 2021Assigned to Editor
11 Jul 2021Reviewer(s) Assigned
07 Oct 2021Editorial Decision: Revise Major
18 Nov 20211st Revision Received
21 Nov 2021Submission Checks Completed
21 Nov 2021Assigned to Editor
27 Nov 2021Reviewer(s) Assigned
26 Jan 2022Editorial Decision: Revise Minor
02 Feb 20222nd Revision Received
06 Feb 2022Submission Checks Completed
06 Feb 2022Assigned to Editor
08 Feb 2022Reviewer(s) Assigned
28 Mar 2022Editorial Decision: Accept