loading page

Efficient nickel-based catalysts for amine regeneration of CO2 capture: From experimental to calculations verifications
  • +3
  • Qiang Sun,
  • Yu Mao,
  • Hongxia Gao,
  • Teerawat Sema,
  • Sen Liu,
  • Zhiwu Liang
Qiang Sun
Hunan University
Author Profile
Yu Mao
Hunan University
Author Profile
Hongxia Gao
Hunan university
Author Profile
Teerawat Sema
Chulalongkorn University
Author Profile
Sen Liu
Hunan University
Author Profile
Zhiwu Liang
Hunan University
Author Profile


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.

Peer review status:UNDER REVIEW

25 Jun 2021Submitted to AIChE Journal
28 Jun 2021Assigned to Editor
28 Jun 2021Submission Checks Completed
11 Jul 2021Reviewer(s) Assigned