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Atomic Cu-N-P-C Active Complex with Integrated Oxidation and Chlorination for Improved Ethylene Oxychlorination.
- Source :
-
Advanced Science . 3/15/2023, Vol. 10 Issue 8, p1-9. 9p. - Publication Year :
- 2023
-
Abstract
- Fine constructing the chemical environment of the central metal is vital in developing efficient single-atom catalysts (SACs). Herein, the atomically dispersed Cu on the N-doped carbon is modulated by introducing Cu-P moiety to Cu-N-C SAC. Through fine-tuning with another heteroatom P, the Cu SAC shows the superior performance of ethylene oxychlorination. The Cu site activity of Cu-NPC is four times higher than the P-free Cu-NC catalyst and 25 times higher than the Ce-promoted CuCl2/Al2O3 catalyst in the long-term test (>200 h). The selectivity of ethylene dichloride can be splendidly kept at ≈99%. Combined experimental and simulation studies provide a theoretical framework for the coordination of Cu, N, and P in the complex active center and its role in effectively catalyzing ethylene oxychlorination. It integrates the oxidation and chlorination reactions with superior catalytic performance and unrivaled ability of corrosive-HCl resistance. The concept of fine constructing with another heteroatom is anticipated to provide with inspiration for rational catalyst design and expand the applications of carbon-based SACs in heterogeneous catalysis. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHLORINATION
*ETHYLENE
Subjects
Details
- Language :
- English
- ISSN :
- 21983844
- Volume :
- 10
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Advanced Science
- Publication Type :
- Academic Journal
- Accession number :
- 166096567
- Full Text :
- https://doi.org/10.1002/advs.202205635