DOI: 10.1016/j.jcou.2018.12.017
Scopus记录号: 2-s2.0-85060774914
论文题名: Highly active Mn(III) meso-tetrakis(2,3-dichlorophenyl)porphyrin catalysts for the cycloaddition of CO2 with epoxides
作者: Milani J.L.S. ; Meireles A.M. ; Cabral B.N. ; De Almeida Bezerra W. ; Martins F.T. ; Da Silva Martins D.C. ; Das Chagas R.P.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2019
卷: 30 起始页码: 100
结束页码: 106
语种: 英语
英文关键词: Carbon dioxide
; Cyclic carbonate
; Homogeneous catalysis
; Manganese complexes
; Metalloporphyrins
Scopus关键词: Carbon dioxide
; Catalysis
; Catalysts
; Crystal structure
; Cycloaddition
; Porphyrins
; Reusability
; Single crystals
; Styrene
; Synthesis (chemical)
; Cyclic carbonates
; Cycloaddition reaction
; Homogeneous catalysis
; Manganese complex(III)
; Manganese complexes
; Metallo-porphyrins
; Recycling experiments
; Single crystal x-ray diffraction
; Manganese compounds
英文摘要: A new free-base porphyrin, meso-tetrakis(2,3-dichlorophenyl)porphyrin, (H2T2,3-DCPP) and the respective manganese(III) complexes [MnIII(T2,3-DCPP)X] with six different axial ligands (NO3 -, AcO-, IO3 -, Br-, Cl-, HO-) were synthesized and characterized. The molecular structure of [MnIII(T2,3-DCPP)Cl] was also confirmed by single crystal X-ray diffraction. The complexes, when combined with tetrabutylammonium halides as nucleophile source cocatalysts, were highly active catalysts in the solvent-free cycloaddition reactions of carbon dioxide with styrene oxide, selectively producing the respective cyclic carbonate. The complex [MnIII(T2,3-DCPP)Cl] was used to evaluate a series of parameters in the system and efficiently catalyzed the transformation of various epoxides using TBAI as cocatalyst, 30 bar of CO2 at 100 °C, producing nearly quantitative conversions in most of the cases. Remarkable TON values of 500,000 and 434,780 were achieved, respectively, for propylene oxide and styrene oxide using [MnIII(T2,3-DCPP)Cl] as catalyst. Recycling experiments were conducted and the system maintains high conversion rates after eight runs, which indicated a high stability and reusability of the catalyst. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117300
Appears in Collections: 气候变化与战略
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Recommended Citation:
Milani J.L.S.,Meireles A.M.,Cabral B.N.,et al. Highly active Mn(III) meso-tetrakis(2,3-dichlorophenyl)porphyrin catalysts for the cycloaddition of CO2 with epoxides[J]. Journal of CO2 Utilization,2019-01-01,30