loading page

Constructing Single-atom Ni on N-doped Carbon Via Chelation-anchored Strategy for the Hydrogenolysis of Lignin
  • +3
  • Li Tianjin,
  • Chen Bo,
  • Cao Meifang,
  • Ouyang Xinping,
  • Xueqing Qiu,
  • Li Changzhi
Li Tianjin

Corresponding Author:[email protected]

Author Profile
Cao Meifang
Author Profile
Ouyang Xinping
Author Profile
Xueqing Qiu
South China University of Technology
Author Profile
Li Changzhi
Author Profile

Abstract

The utilization of lignin remains a great challenge due to its complex non-repetitive structure and the lack of efficient catalyst. Herein, a single-atom catalyst Ni@N-C was designed via a facile chelation-anchored strategy. Ni atoms were immobilized on the N-doped carbon carrier by a two-stage pyrolysis of a mixture of D-glucosamine hydrochloride, nickel acetate and melamine. D-glucosamine hydrochloride as a chelating agent prevented the aggregation of Ni2+, and melamine provided enough N to anchor Ni by forming Ni-N4 structure. Ni@N-C gave a 31.2% yield of aromatic compounds from lignin hydrogenolysis, which was twice higher than that achieved by Ni cluster catalyst. Based on the experimental and DFT calculation results, the higher activity of Ni@N-C was attributed to its lower H2 dissociation energy and the reduced energy barriers of the transition states. The strategy described opens an efficient green avenue for preparing single-atom catalyst that possesses outstanding activity in lignin depolymerization.
11 Apr 2022Submitted to AIChE Journal
13 Apr 2022Submission Checks Completed
13 Apr 2022Assigned to Editor
16 Apr 2022Reviewer(s) Assigned
06 May 2022Editorial Decision: Revise Minor
17 May 20221st Revision Received
26 May 2022Submission Checks Completed
26 May 2022Assigned to Editor
26 May 2022Reviewer(s) Assigned
08 Aug 2022Editorial Decision: Accept