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Research Article

Highly efficient catalyst for 1,1,2-trichloroethane dehydrochlorination via BN3 frustrated Lewis acid-base pairs

Yuxue Yue1,2Fangmin Zuo1Bolin Wang1( )Xiaoling Xian3Jun Tang4Haifeng Zhang1Zilong Zhang1Qingping Ke4( )Wei Chen3( )
School of Chemical Engineering, Northeast Electric Power University, Jilin 132012, China
Industrial Catalysis Institute of Zhejiang University of Technology, Hangzhou 310014, China
Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
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Graphical Abstract

B-modulated N-doped sites construct a typical frustrated Lewis acid-base pairs with upshifted p-band center, which is highly efficient for catalytic dehydrochlorination of 1,1,2-trichloroethane (TCE).


In this study, a novel non-metallic carbon-based catalyst co-doped with boron and nitrogen (B,N) was successfully synthesized. By precisely controlling the carbonization temperature of a binary mixed ionic liquid, we selectively modified the doping site structure, ultimately constructing a B,N co-doped frustrated Lewis acid-base pair catalyst. This catalyst exhibited remarkable catalytic activity, selectivity, and stability in the dehydrochlorination reaction of 1,1,2-trichloroethane (TCE). Detailed characterization and theoretical calculations revealed that the primary active center of this catalyst was the BN3 configuration. Compared to conventional graphitic N structures, the BN3 structure had a higher p-band center, ensuring superior adsorption and activation capabilities for TCE during the reaction. Within the BN3 site, three negatively charged nitrogen atoms acted as Lewis bases, while positively charged boron atoms acted as Lewis acids. This synergistic interaction facilitated the specific dissociation of chlorine and hydrogen atoms from TCE, significantly enhancing the 1,1-dichloroethene selectivity. Through this research, we not only explored the active site structure and catalytic mechanism of B,N co-doped catalysts in depth but also provided an efficient, selective, and stable catalyst for the dehydrochlorination of TCE, contributing significantly to the development of non-metallic catalysts.

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Nano Research
Pages 4773-4781
Cite this article:
Yue Y, Zuo F, Wang B, et al. Highly efficient catalyst for 1,1,2-trichloroethane dehydrochlorination via BN3 frustrated Lewis acid-base pairs. Nano Research, 2024, 17(6): 4773-4781.






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Received: 07 November 2023
Revised: 03 December 2023
Accepted: 15 December 2023
Published: 25 January 2024
© Tsinghua University Press 2024