Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 300, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2021.120288
Keywords
Catalytic hydrogen transfer; Cascade reaction; Imine synthesis; MOF-derived carbon material; Single atom catalysis
Funding
- Science and Technology Project of Shenzhen [JCYJ20190806155814624]
- National Natural Science Foundation of China [22002120]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110507]
Ask authors/readers for more resources
This study successfully designed and prepared a hierarchical nano-pyramid catalyst with cobalt single atoms supported on zinc oxide, which exhibited excellent performance in catalyzing the hydrogen transfer cascade reaction and has the potential to be a non-noble-metal alternative to noble-metal catalysts.
The catalytic hydrogen transfer (CHT) cascade reaction between alcohols and nitro- compounds meets green chemistry yet involves high catalyst requirements. Herein, a hierarchical nano-pyramid structure, in which cobalt single atoms (Co SAs) are deposited on highly dispersed ZnO nanoparticles supported by nitrogen-doped carbon (denoted as Co-ZnO/NC), was designed and obtained through pyrolysis of ZnCo-ZIF. The catalyst exhibited excellent catalytic performance toward the CHT cascade reaction, achieving a high nitrobenzene conversion (94 %), imine selectivity (97 %), and turnover frequency (8.8 h-1). This nano-pyramid is a state-ofthe-art non-noble-metal catalyst and is comparable to noble-metal catalysts. Experimental and DFT results revealed that the Co SAs supported on ZnO reduced the reaction energy barrier of hydroxyl dehydrogenation, the first and rate-determining step in this heterogeneous catalysis. Furthermore, Co-ZnO/NC exhibits good recyclability and universality. Our findings offer a new catalyst for Schiff base synthesis and aid understanding of the roles of Zn in ZIF-derived carbon catalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available