Carbon-supported CeNCl as an efficient catalyst for CO2 cycloaddition

被引:0
|
作者
Liu, Li [1 ,2 ]
Zhang, Lingling [2 ]
Chu, Xiang [1 ,2 ]
Geng, Baokang [1 ,2 ]
Wang, Huilin [2 ]
Li, Zongxiang [3 ]
Wang, Xiao [1 ,2 ]
Song, Shuyan [1 ,2 ]
Zhang, Hongjie [1 ,2 ,4 ]
机构
[1] Univ Sci & Technol China, Sch Appl Chem & Engn, Hefei 230026, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
[3] Sinocare Inc, Changsha 410221, Peoples R China
[4] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
CO2; cycloaddition; heterogeneous catalysis; CeNCl; Lewis acid/base; METAL-ORGANIC FRAMEWORKS; CYCLIC CARBONATES; DIOXIDE; STRATEGIES; FIXATION;
D O I
10.26599/NR.2025.94907028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The cycloaddition reaction of CO2 with epoxide not only effectively reduces the concentration of CO2 in the atmosphere, but also has excellent industrial application value and up to 100% atom utilization, but there are difficulties in separation and recovery of traditional homogeneous catalysts, harsh reaction conditions of traditional heterogeneous catalysts, and activation of CO2 molecules. In this paper, an easily synthesized heterogeneous catalyst CeNCl/C was used to catalyze the cycloaddition reaction of CO2 with styrene oxide, with a high yield of 92.7%, a high selectivity of 96.7%, a turnover numbers (TON) value of 349, and a good stability demonstrated in six cycle tests (equivalent to 216 h of testing). Through comprehensive studies, it was shown that CeNCl/C contains Lewis acid-base centers as active centers, which can effectively reduce the energy barrier required for ring opening of the reaction substrate, enhance the adsorption and activation of CO2, and promote the formation of intermediates, which led to the acquisition of excellent catalytic activity.
引用
收藏
页数:7
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