Functionalization of nitrogen-doped graphene quantum dot:A sustainable carbon-based catalyst for the production of cyclic carbonate from epoxide and CO_(2)

作     者：Zahra Eshaghi Gorji Abbas Ali Khodadadi Siavash Riahi Timo Repo Yadollah Mortazavi Marianna Kemell Zahra Eshaghi Gorji;Abbas Ali Khodadadi;Siavash Riahi;Timo Repo;Yadollah Mortazavi;Marianna Kemell

作者机构：Catalysis and Nanostructured Materials Research LaboratorySchool of Chemical EngineeringCollege of EngineeringUniversity of TehranTehran ***Iran Department of ChemistryUniversity of HelsinkiHelsinki 00014Finland Institute of Petroleum EngineeringSchool of Chemical EngineeringCollege of EngineeringUniversity of TehranTehran ***Iran 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第126卷第4期

页      面：408-422页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by Iran National Science Foundation(No.97015707) 

主　　题：Heterogeneous organocatalyst CO_(2) Propylene carbonate N-doped graphene quantum dot Nanomaterials 

摘      要：A series of organic compounds were successfully immobilized on an N-doped graphene quantum dot (N-GQD) to prepare a multifunctional organocatalyst for coupling reaction between CO_(2)and propylene oxide (PO).The simultaneous presence of halide ions in conjunction with acidic-and basic-functional groups on the surface of the nanoparticles makes them highly active for the production of propylene carbonate (PC).The effects of variables such as catalyst loading,reaction temperature,and structure of substituents are *** proposed catalysts were characterized by different techniques,including Fourier transform infrared spectroscopy (FTIR),field emission scanning electron microscopy/energy dispersive X-ray microanalysis (FESEM/EDX),thermogravimetric analysis (TGA),elemental analysis,atomic force microscopy (AFM),and ultraviolet–visible (UV-Vis) *** optimal reaction conditions,3-bromopropionic acid (BPA) immobilized on N-GQD showed a remarkable activity,affording the highest yield of 98%at 140℃ and 106Pa without any co-catalyst or *** new metal-free catalysts have the advantage of easy separation and reuse several *** on the experimental data,a plausible reaction mechanism is suggested,where the hydrogen bonding donors and halogen ion can activate the epoxide,and amine functional groups play a vital role in CO_(2)adsorption.