Highly efficient catalyst for 1,1,2-trichloroethane dehydrochlorination via BN_(3) frustrated Lewis acid-base pairs  

作　　者：Yuxue Yue Fangmin Zuo Bolin Wang Xiaoling Xian Jun Tang Haifeng Zhang Zilong Zhang Qingping Ke Wei Chen 

机构地区：[1]School of Chemical Engineering,Northeast Electric Power University,Jilin 132012,China [2]Industrial Catalysis Institute of Zhejiang University of Technology,Hangzhou 310014,China [3]Key Laboratory of Carbon Materials of Zhejiang Province,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China [4]College of Chemistry and Chemical Engineering,Anhui University of Technology,Maanshan 243002,China

出　　处：《Nano Research》2024年第6期4773-4781,共9页纳米研究（英文版）

基　　金：the funding support from the National Natural Science Foundation of China(Nos.22202036 and 22302001);the Jilin Province Scientific,the Technological Planning Project of China(No.20230101292JC).

摘　　要：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 BN_(3)configuration.Compared to conventional graphitic N structures,the BN_(3)structure had a higher p-band center,ensuring superior adsorption and activation capabilities for TCE during the reaction.Within the BN_(3)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.

关 键 词：B N co-doped sites DEHYDROCHLORINATION frustrated Lewis acid-base pairs catalytic mechanism 

分 类 号：O64[理学—物理化学]