Urea-derived graphitic carbon nitride as an efficient heterogeneous catalyst for CO2 conversion into cyclic carbonates

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	Urea-derived graphitic carbon nitride as an efficient heterogeneous catalyst for CO2 conversion into cyclic carbonates
	Su, Qian 1,2; Sun, Jian 1; Wang, Jinquan 1; Yang, Zifeng 1,3; Cheng, Weiguo 1; Zhang, Suojiang 1
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2014
卷号	4 期号:6 页码:1556-1562
关键词	FUNCTIONALIZED IONIC LIQUID QUATERNARY AMMONIUM-SALT CHEMICAL FIXATION HIGHLY EFFICIENT VISIBLE-LIGHT SUPERCRITICAL CONDITIONS PROPYLENE CARBONATE DIMETHYL CARBONATE OXYGEN REDUCTION BASE CATALYSTS
ISSN号	2044-4753
其他题名	Catal. Sci. Technol.
中文摘要	In order to overcome existing solid catalysts' disadvantages of low stability and activity, urea-derived graphitic carbon nitrides (u-g-C3N4) with higher stabilities and more active centers were prepared under different temperatures (550-450 degrees C). With a decrease in preparation temperature from 550 degrees C to 480 degrees C, a u-g-C3N4 of lower crystallinity with a smaller polymerization degree was obtained and found to have a higher catalytic activity for CO2 conversion into propylene carbonate. The higher activity of the u-g-C3N4 caused by decreasing the temperature might be ascribed to the lower crystallinity and polymerization degree, which led to more edge defects, wherein the incompletely-coordinated nitrogen atoms served as the main active sites in the cycloaddition reaction. Among all the prepared catalysts, that prepared at 480 degrees C (u-g-C3N4-480) showed the highest catalytic activity for CO2 conversion and exhibited great suitability for other epoxide substrates.
英文摘要	In order to overcome existing solid catalysts' disadvantages of low stability and activity, urea-derived graphitic carbon nitrides (u-g-C3N4) with higher stabilities and more active centers were prepared under different temperatures (550-450 degrees C). With a decrease in preparation temperature from 550 degrees C to 480 degrees C, a u-g-C3N4 of lower crystallinity with a smaller polymerization degree was obtained and found to have a higher catalytic activity for CO2 conversion into propylene carbonate. The higher activity of the u-g-C3N4 caused by decreasing the temperature might be ascribed to the lower crystallinity and polymerization degree, which led to more edge defects, wherein the incompletely-coordinated nitrogen atoms served as the main active sites in the cycloaddition reaction. Among all the prepared catalysts, that prepared at 480 degrees C (u-g-C3N4-480) showed the highest catalytic activity for CO2 conversion and exhibited great suitability for other epoxide substrates.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	FUNCTIONALIZED IONIC LIQUID ; QUATERNARY AMMONIUM-SALT ; CHEMICAL FIXATION ; HIGHLY EFFICIENT ; VISIBLE-LIGHT ; SUPERCRITICAL CONDITIONS ; PROPYLENE CARBONATE ; DIMETHYL CARBONATE ; OXYGEN REDUCTION ; BASE CATALYSTS
收录类别	SCI
原文出处	://WOS:000336158700009
语种	英语
WOS记录号	WOS:000336158700009
公开日期	2014-08-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/10958]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn,Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China 3.Henan Univ, Sch Chem & Chem Engn, Kaifeng 475001, Peoples R China
推荐引用方式 GB/T 7714	Su, Qian,Sun, Jian,Wang, Jinquan,et al. Urea-derived graphitic carbon nitride as an efficient heterogeneous catalyst for CO2 conversion into cyclic carbonates[J]. CATALYSIS SCIENCE & TECHNOLOGY,2014,4(6):1556-1562.
APA	Su, Qian,Sun, Jian,Wang, Jinquan,Yang, Zifeng,Cheng, Weiguo,&Zhang, Suojiang.(2014).Urea-derived graphitic carbon nitride as an efficient heterogeneous catalyst for CO2 conversion into cyclic carbonates.CATALYSIS SCIENCE & TECHNOLOGY,4(6),1556-1562.
MLA	Su, Qian,et al."Urea-derived graphitic carbon nitride as an efficient heterogeneous catalyst for CO2 conversion into cyclic carbonates".CATALYSIS SCIENCE & TECHNOLOGY 4.6(2014):1556-1562.