The extraction behavior of Fe（Ⅲ）, Cu（Ⅱ）, Co（Ⅱ）, Mn（Ⅱ）, Pb（Ⅱ）, Ni（Ⅱ） and Hg（Ⅱ） by microemulsion Triton X-100 (α-（4-（1,1,3,3-tetramethy（butyl）phenyl）-ω-hydroxy）poly（oxy-1,2-ethanediyl） in ...The extraction behavior of Fe（Ⅲ）, Cu（Ⅱ）, Co（Ⅱ）, Mn（Ⅱ）, Pb（Ⅱ）, Ni（Ⅱ） and Hg（Ⅱ） by microemulsion Triton X-100 (α-（4-（1,1,3,3-tetramethy（butyl）phenyl）-ω-hydroxy）poly（oxy-1,2-ethanediyl） in the presence of （NH4）2SO4 and complexing agents were investigated. The results indicated that the complexes of Fe（Ⅲ） with aluminon were almost completely extracted in HAc-NaAc buffered microemulsion while Cu（Ⅱ）, Co（Ⅱ）, Cd（Ⅱ）, Mn（Ⅱ） and Hg（Ⅱ） were not. Quantitative separation of Fe（Ⅲ）, Co（Ⅱ） and Mn（Ⅱ） were realized. The extraction mechanism by O/W microemulsion has been discussed.展开更多
Hydroxy 5 methylphenyl)(phenyl)methyl] 2 pyridylbenzimidazole was synthesized and its crystal structure was determined by X ray four cycle diffraction method. The crystal belongs to monoclinic, space group P2 1 /c , w...Hydroxy 5 methylphenyl)(phenyl)methyl] 2 pyridylbenzimidazole was synthesized and its crystal structure was determined by X ray four cycle diffraction method. The crystal belongs to monoclinic, space group P2 1 /c , with the crystal cell parameters: a =1.351 4(5) nm, b =0.965 9(6) nm, c =1.674 0(3) nm, β =110.2 7(2)°, V =2.049 7(14) nm 3, Z=4, D c=1.269 g/cm 3, R 1= 0.057 5 . The analyses of crystal structure show that the chain structure is formed by intermolecular H bond. [WT5HZ]展开更多
The in situ spectroelectrochemical experiment shows that an absorption peak at 580.5 nm attributable to poly(methylene blue) grows slowly at the beginning of the electrolysis of methylene blue, and then this peak grow...The in situ spectroelectrochemical experiment shows that an absorption peak at 580.5 nm attributable to poly(methylene blue) grows slowly at the beginning of the electrolysis of methylene blue, and then this peak grows more quickly. The visible spectra prove that there are two absorption peaks at 580.5 and 690.2 nm respectively for the mixture solution after electrolysis. The former one indicates that poly(methylene blue)polymerized on the ITO electrode is partly soluble; the latter one is attributed to a water-soluble polymer since it completely dissolves in the aqueous solution. The result from the rotating ring-disk electrode identifies that an intermediate is produced at the disk electrode, which is collected at the ring electrode. The ring current increases with decreasing the ring potential and with increasing the rotation rate. Thus, the intermediate is a species carrying a positive charge and not too stable.The result from the XPS experiment shows that the anions can be doped into poly(methylene blue) film and dedoped from it during oxidation and reduction processes. The results from the impedance experiment indicate that the charge transfer impedance of poly(methylene blue) decreases with decreasing potential.展开更多
文摘The extraction behavior of Fe（Ⅲ）, Cu（Ⅱ）, Co（Ⅱ）, Mn（Ⅱ）, Pb（Ⅱ）, Ni（Ⅱ） and Hg（Ⅱ） by microemulsion Triton X-100 (α-（4-（1,1,3,3-tetramethy（butyl）phenyl）-ω-hydroxy）poly（oxy-1,2-ethanediyl） in the presence of （NH4）2SO4 and complexing agents were investigated. The results indicated that the complexes of Fe（Ⅲ） with aluminon were almost completely extracted in HAc-NaAc buffered microemulsion while Cu（Ⅱ）, Co（Ⅱ）, Cd（Ⅱ）, Mn（Ⅱ） and Hg（Ⅱ） were not. Quantitative separation of Fe（Ⅲ）, Co（Ⅱ） and Mn（Ⅱ） were realized. The extraction mechanism by O/W microemulsion has been discussed.
文摘Hydroxy 5 methylphenyl)(phenyl)methyl] 2 pyridylbenzimidazole was synthesized and its crystal structure was determined by X ray four cycle diffraction method. The crystal belongs to monoclinic, space group P2 1 /c , with the crystal cell parameters: a =1.351 4(5) nm, b =0.965 9(6) nm, c =1.674 0(3) nm, β =110.2 7(2)°, V =2.049 7(14) nm 3, Z=4, D c=1.269 g/cm 3, R 1= 0.057 5 . The analyses of crystal structure show that the chain structure is formed by intermolecular H bond. [WT5HZ]
文摘The in situ spectroelectrochemical experiment shows that an absorption peak at 580.5 nm attributable to poly(methylene blue) grows slowly at the beginning of the electrolysis of methylene blue, and then this peak grows more quickly. The visible spectra prove that there are two absorption peaks at 580.5 and 690.2 nm respectively for the mixture solution after electrolysis. The former one indicates that poly(methylene blue)polymerized on the ITO electrode is partly soluble; the latter one is attributed to a water-soluble polymer since it completely dissolves in the aqueous solution. The result from the rotating ring-disk electrode identifies that an intermediate is produced at the disk electrode, which is collected at the ring electrode. The ring current increases with decreasing the ring potential and with increasing the rotation rate. Thus, the intermediate is a species carrying a positive charge and not too stable.The result from the XPS experiment shows that the anions can be doped into poly(methylene blue) film and dedoped from it during oxidation and reduction processes. The results from the impedance experiment indicate that the charge transfer impedance of poly(methylene blue) decreases with decreasing potential.
