通过水代替有机溶剂来提纯2-丙基-4,5-1 H-咪唑二羧酸二乙酯和4-(1-羟基-1-甲基乙基)-2-丙基-1 H-咪唑-5-羧酸乙酯的新方法,使得改进工艺更加绿色简便。采用1 H NMR、13 C NMR、IR、MS谱图对反应后的产品和未知杂质进行结构鉴定,确证为...通过水代替有机溶剂来提纯2-丙基-4,5-1 H-咪唑二羧酸二乙酯和4-(1-羟基-1-甲基乙基)-2-丙基-1 H-咪唑-5-羧酸乙酯的新方法,使得改进工艺更加绿色简便。采用1 H NMR、13 C NMR、IR、MS谱图对反应后的产品和未知杂质进行结构鉴定,确证为一水合4-(1-羟基-1-甲基乙基)-2-丙基-1 H-咪唑-5-羧酸乙酯和4-乙酰基-2-丙基-1 H-咪唑-5-羧酸乙酯。对反应的可能机理进行初步研究。展开更多
The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was stu...The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.展开更多
文摘通过水代替有机溶剂来提纯2-丙基-4,5-1 H-咪唑二羧酸二乙酯和4-(1-羟基-1-甲基乙基)-2-丙基-1 H-咪唑-5-羧酸乙酯的新方法,使得改进工艺更加绿色简便。采用1 H NMR、13 C NMR、IR、MS谱图对反应后的产品和未知杂质进行结构鉴定,确证为一水合4-(1-羟基-1-甲基乙基)-2-丙基-1 H-咪唑-5-羧酸乙酯和4-乙酰基-2-丙基-1 H-咪唑-5-羧酸乙酯。对反应的可能机理进行初步研究。
文摘The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.
