典型文献
Efficient homogenous catalysis of CO2 to generate cyclic carbonates by heterogenous and recyclable polypyrazoles
文献摘要：
The cycloaddition between CO2 and epoxides to produce cyclic carbonate is an attractive and efficiency pathway for the utilization of CO2 as C1 source.The development of catalyst to mediate cycloaddition between CO2 and epoxides at low temperature and pressure is still a challenge.Herein,a series of polypyrazoles with glass transition temperature(Tg)in the range of 42.3-52.5℃were synthesized and served as catalyst to mediate the cycloaddition of CO2 and epoxides by the assistant of tetrabutylammo-nium bromide.The catalytic behaviors of polypyrazole on the model cycloaddition of CO2 to epichloro-hydrin,including the reaction parameters optimization and versatility were investigated in detail,and excellent yield(99.9％)and selectivity(99％)were obtained under the optimized reaction conditions of 70℃and 1.0 MPa for 6.0 h.Noteworthily,the polypyrazole acts as homogeneous catalyst during reaction(higher than Tg).And under room temperature,polypyrazoles can be easily separated and recovered,which is a promising feature of a heterogeneous catalyst.Furthermore,the reaction mechanism was pro-posed.The DFT calculation suggested that the formation of hydrogen bond between pyrazole and epoxide greatly reduced the energy barrier,which play an important role in promoting CO2 cycloaddition.
文献关键词：
中图分类号：
作者姓名：
Zhen Lu;Jie He;Bogeng Guo;Yulai Zhao;Jingyu Cai;Longqiang Xiao;Linxi Hou
作者机构：
Department of Materials-Oriented Chemical Engineering,School of Chemical Engineering,Fuzhou University,Fuzhou 350116,China;Qingyuan Innovation Laboratory,Quanzhou 362801,China;Fujian Key Laboratory of Advanced Manufacturing Technology of Specialty Chemicals,Fuzhou University,Fuzhou 350116,China
文献出处：
引用格式：
[1]Zhen Lu;Jie He;Bogeng Guo;Yulai Zhao;Jingyu Cai;Longqiang Xiao;Linxi Hou-.Efficient homogenous catalysis of CO2 to generate cyclic carbonates by heterogenous and recyclable polypyrazoles)[J].中国化学工程学报（英文版）,2022(03):110-115
A类：
polypyrazoles,tetrabutylammo,polypyrazole,epichloro,hydrin
B类：
Efficient,homogenous,catalysis,generate,cyclic,carbonates,by,heterogenous,recyclable,cycloaddition,between,epoxides,produce,attractive,efficiency,pathway,utilization,C1,source,development,catalyst,mediate,low,temperature,pressure,still,challenge,Herein,series,glass,transition,Tg,range,were,synthesized,served,assistant,nium,bromide,catalytic,behaviors,model,including,reaction,parameters,optimization,versatility,investigated,detail,excellent,yield,selectivity,obtained,under,optimized,conditions,Noteworthily,acts,homogeneous,during,higher,than,And,room,can,easily,separated,recovered,which,promising,feature,heterogeneous,Furthermore,mechanism,was,posed,DFT,calculation,suggested,that,formation,hydrogen,bond,greatly,reduced,energy,barrier,play,important,role,promoting
AB值：
0.529642
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
