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Ionic liquids with multiple active sites supported by SBA-15 for catalyzing conversion of CO2 into cyclic carbonates

文献类型：期刊论文

作者Shi, Zijie1,2; Su, Qian2; Ying, Ting2; Tan, Xin1,2; Deng, Lili1,2; Dong, Li2; Cheng, Weiguo2
刊名JOURNAL OF CO2 UTILIZATION
出版日期2020-07-01
卷号39页码:7
关键词Cycloaddition reaction Multiple active sites SBA-15
ISSN号2212-9820
DOI10.1016/j.jcou.2020.101162
英文摘要Synthesis of cyclic carbonates via cycloaddition reaction by means of CO2 and epoxides has been thought as an effective method for relieving global warming together with resource shortage. In order to elevate the utilization ratio of ionic liquids and separate catalysts easily after reaction, multi-site ionic liquids were designed and then immobilized on SBA-15 for the conversion of CO2 into cyclic carbonates. By combining the advantages of multiple sites and mesoporous channel, in this work, a certain amount of ionic liquids with multiple active sites were firmly immobilized on modified SBA-15. Among all the immobilized ionic liquids, [IMCA](2)Br-2@SBA-15 presented the best catalytic activity. The result showed high yield (97.4 %) and almost 100 % selectivity of propylene carbonate, which was close to equivalent molar bulk ionic liquids. This superiority could be attributed to the sufficient dispersion of multiple active sites of ionic liquids after being immobilized, enabling efficient use of ionic liquids. Furthermore, the catalyst showed good recyclability after five cycles. By characterization and DFT calculation, the synergistically catalytic mechanism based on multiple sites was proposed.
WOS关键词PERIODIC MESOPOROUS ORGANOSILICA ; HETEROGENEOUS CATALYST ; CAPTURE ; SILICA ; FIXATION ; DIOXIDE ; IMMOBILIZATION ; FRAMEWORK ; EFFICIENT ; EPOXIDES
资助项目Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A01] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21030500] ; National Natural Science Foundation of China[21890763] ; National Natural Science Foundation of China[21908226]
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000546645100004
出版者ELSEVIER SCI LTD
资助机构Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/41379]  
专题中国科学院过程工程研究所
通讯作者Cheng, Weiguo
作者单位1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst,CAS Key Lab, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Zijie,Su, Qian,Ying, Ting,et al. Ionic liquids with multiple active sites supported by SBA-15 for catalyzing conversion of CO2 into cyclic carbonates[J]. JOURNAL OF CO2 UTILIZATION,2020,39:7.
APA Shi, Zijie.,Su, Qian.,Ying, Ting.,Tan, Xin.,Deng, Lili.,...&Cheng, Weiguo.(2020).Ionic liquids with multiple active sites supported by SBA-15 for catalyzing conversion of CO2 into cyclic carbonates.JOURNAL OF CO2 UTILIZATION,39,7.
MLA Shi, Zijie,et al."Ionic liquids with multiple active sites supported by SBA-15 for catalyzing conversion of CO2 into cyclic carbonates".JOURNAL OF CO2 UTILIZATION 39(2020):7.

入库方式： OAI收割

来源：过程工程研究所

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