This paper reported the thermodynamics of extracting Re(VII) with theextractant of N816 (R_3N) in the H_2SO_4 system. The equilibrium molalities of ReO_4^- in theextraction R_3N (org) + H^+(aq) + ReO_4^- (aq) = R_3NHR...This paper reported the thermodynamics of extracting Re(VII) with theextractant of N816 (R_3N) in the H_2SO_4 system. The equilibrium molalities of ReO_4^- in theextraction R_3N (org) + H^+(aq) + ReO_4^- (aq) = R_3NHReO_4(org) were measured at ionic strengthsfrom 0.1 to 2.0 mol centre dot kg^(-1) in the aqueous phase containing Na_2SO_4 as the supportingelectrolyte and at constant initial molality of extractant in the organic phase at temperatures from278.15 to 303.15 K. The standard extraction constants .K^(theta) at various temperatures wereobtained. The working equation was obtained as 1g K^(theta) = 2.819 + 905.44/T-0.00349T.Thermodynamic parameters for the extraction process were calculated.展开更多
The novel one-dimensional coordination polymer {[Cu(L)2(H2O)]?2BF4?6H2O}∞ [1, L=1,2-bis(4-pyridinecarboxamido)ethane] was synthesized as single crystals and characterized by means of X-ray diffraction analysis, eleme...The novel one-dimensional coordination polymer {[Cu(L)2(H2O)]?2BF4?6H2O}∞ [1, L=1,2-bis(4-pyridinecarboxamido)ethane] was synthesized as single crystals and characterized by means of X-ray diffraction analysis, elemental analysis, IR spectroscopy and TG measurement. Structure 1 consists of looped chains. In addition, linked by hydrogen bonds, the one-dimensional chains were transformed into three-dimensional framework, which shows channels filled with anions and uncoordinated water molecules.展开更多
文摘This paper reported the thermodynamics of extracting Re(VII) with theextractant of N816 (R_3N) in the H_2SO_4 system. The equilibrium molalities of ReO_4^- in theextraction R_3N (org) + H^+(aq) + ReO_4^- (aq) = R_3NHReO_4(org) were measured at ionic strengthsfrom 0.1 to 2.0 mol centre dot kg^(-1) in the aqueous phase containing Na_2SO_4 as the supportingelectrolyte and at constant initial molality of extractant in the organic phase at temperatures from278.15 to 303.15 K. The standard extraction constants .K^(theta) at various temperatures wereobtained. The working equation was obtained as 1g K^(theta) = 2.819 + 905.44/T-0.00349T.Thermodynamic parameters for the extraction process were calculated.
文摘The novel one-dimensional coordination polymer {[Cu(L)2(H2O)]?2BF4?6H2O}∞ [1, L=1,2-bis(4-pyridinecarboxamido)ethane] was synthesized as single crystals and characterized by means of X-ray diffraction analysis, elemental analysis, IR spectroscopy and TG measurement. Structure 1 consists of looped chains. In addition, linked by hydrogen bonds, the one-dimensional chains were transformed into three-dimensional framework, which shows channels filled with anions and uncoordinated water molecules.
