DOI: 10.1016/j.jcou.2015.06.002
Scopus记录号: 2-s2.0-84948083749
论文题名: Effect of the halogen ligand in [Mn(salen)X] complexes on the catalytic styrene epoxidation in scCO2
作者: Morales G. ; Delgado X. ; Galeano L.A.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2015
卷: 12 起始页码: 82
结束页码: 85
语种: 英语
英文关键词: Carbon dioxide
; Epoxidation
; Mn-salen
; Styrene oxidation
Scopus关键词: Acetone
; Benzoic acid
; Carbon
; Carbon dioxide
; Catalyst activity
; Chemical bonds
; Chlorine compounds
; Electronegativity
; Epoxidation
; Fourier transform infrared spectroscopy
; Halogen compounds
; Ketones
; Ligands
; Manganese
; Oxidation
; Styrene
; Supercritical fluid extraction
; FTIR spectroscopy
; Mn-Salen
; Oxidizing agents
; Styrene carbonates
; Styrene epoxidations
; Styrene oxidation
; Supercritical carbon dioxides
; Yield of styrene
; Synthesis (chemical)
英文摘要: [Mn(salen) X] (X = Cl, Br and I) complexes were synthesized with yields ranging 47-56%. The H2-salen ligand and complexes were characterized by elemental analysis, 1H- and 13C NMR, UV/Vis and FTIR spectroscopies. The obtained complexes were tested as active species in the catalytic styrene epoxidation in supercritical carbon dioxide under pretty mild pressure (8.0 MPa) as solvent using either iodosylbenzene or hydrogen peroxide as oxidizing agents. Both, conversion of styrene and yield of styrene epoxide were favored as the electronegativity of the halogen ligand in the complex raised. Benzaldehyde, phenyl methyl ketone, benzoic acid, and 1-phenyl-1,2-ethanediol were other by-products detected by GC/MS together with the targeted styrene epoxide throughout the catalytic experiments. Second stage treatment in the single-pot reaction under 140 °C and 1.0 MPa did not yield the corresponding styrene carbonate, probably because an opposite trend takes place in every one of the two stages of reaction regarding the catalytic activity of the [Mn(salen)X] complex respect to the electronegativity of the halogen ligand. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52941
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Morales G.,Delgado X.,Galeano L.A.. Effect of the halogen ligand in [Mn(salen)X] complexes on the catalytic styrene epoxidation in scCO2[J]. Journal of CO2 Utilization,2015-01-01,12