文献类型：期刊文献

英文题名：Chemical Fixation of CO2 Using Highly Dispersed Cu on Hierarchically Porous N-Doped Carbon

作者：Chen, Mingzhe[1,2];Wu, Qiumin[1];Lin, Chuncheng[2];Zhang, Jiarui[1,2];Zhao, Jigang[1];Chen, Jinzhu[2,3];Xu, Yisheng[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Jinan Univ, Dept Chem, Coll Chem & Mat Sci, Guangzhou 511443, Peoples R China;[3]Zhejiang Univ, Key Lab Biomass Chem Engn, Minist Educ, Dept Chem & Biol Engn, Hangzhou 310027, Peoples R China

年份：2020

卷号：12

期号：36

起止页码：40236

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20204109330354);WOS:【SCI-EXPANDED(收录号:WOS:000571433500029)】；

基金：This research was financially supported by National Natural Science Foundation of China (U1810111 and 21676089), Natural Science Foundation of Guangdong Province, China (2018B030311010), Youth Science and Technology Innovation Talent of Guangdong TeZhi Plan (2019TQ05L111), and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University (2018BCE002).

语种：英文

外文关键词：carbon dioxide; copper catalyst; coupling reaction; hierarchical porosity; N-doped carbon

摘要：Chemical transformation of carbon dioxide (CO2) into fine chemicals such as oxazolidinones and carbamates is mainly reported using transition-metal complexes as homogeneous catalysts. Herein, we demonstrate that a heterogeneous catalyst of highly dispersed Cu (Cu/NHPC) supported on hierarchically porous N-doped carbon (NHPC) can efficiently promote CO2 fixations to oxazolidinones and beta-oxopropylcarbamates. The obtained NHPC, assembled by ultrathin nitrogen-doped carbon nanosheets with a three-dimensional (3D) structure, is readily prepared by pyrolysis of a nitrogen-containing polymer gel (NPG) in the presence of an activator of potassium bicarbonate (KHCO3). The resulting NHPC shows specific Brunauer-Emmet-Teller (BET) surface areas up to 2054 m(2) g(-1) with a mean micro/ mesopore size of 0.55/3.2 nm and a broad macropore size distribution from 50 to 230 nm. The Cu/NHPC can efficiently promote three-component coupling of CO2, amines, and propargyl alcohols for syntheses of various oxazolidinones and beta-oxopropylcarbamates with yields up to 99% and a wide substrate scope. Moreover, the Cu/NHPC exhibits excellent recyclability in CO2-to-oxazolidinone transformation during nine-time recycling. The research thus develops an NHPC-based heterogeneous Cu catalyst for green transformation of CO2.