The separation and recovery of Ni from the copper electrolyte by crystallization of nickel ammonium sulfate double salt were studied.It is found that the solubility of copper sulfate at the same temperature is less th...The separation and recovery of Ni from the copper electrolyte by crystallization of nickel ammonium sulfate double salt were studied.It is found that the solubility of copper sulfate at the same temperature is less than that of nickel sulfate,while the solubility of copper ammonium sulfate is greater than that of nickel ammonium sulfate.So,by adding(NH_(4))_(2)SO_(4),the Ni can be selectively crystallized from the copper electrolyte.By adding(NH_(4))_(2)SO_(4)at the molar ratio of(NH_(4))_(2)SO_(4)/NiSO_(4)≤0.8,and crystallizing at−15℃for 10 h,the Ni in the copper electrolyte can be crystallized in the form of Ni(NH_(4))_(2)(SO_(4))_(2)×6H_(2)O.The qualified product of NiSO_(4)×6H_(2)O can be obtained by pyrolyzing the crystals,dissolving the pyrolysis product in water,and then concentrating the dissolved solution for crystallization.The method of double salt crystallization is a clean,environmentally-friendly,cost-effective and efficient method for separating and recovering nickel from copper electrolyte.展开更多
The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe)...The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe) Br2] (1): triclinic, P1, Z = 2, a= 13. 495 (7), b = 15. 322 (5), c =12. 361 (4), a=105. 32(3), β=93. 19(4), γ=101. 35(4) and V=2401. 2 The bond lengths of W-Fe bond and the W-Cu distance are 2. 793(2) A and 2. 823(2), respectively. Three kind metal atoms of the title structure [Et4N][(Ph3P)2{CuS2WS2Fe}Br2] (1) are nearly distributed along a line, and along which three metalatoms (W, Cu, Fe) are approximately tetrahedral coordination.展开更多
基金the National Natural Science Foundation of China(No.50274075).
文摘The separation and recovery of Ni from the copper electrolyte by crystallization of nickel ammonium sulfate double salt were studied.It is found that the solubility of copper sulfate at the same temperature is less than that of nickel sulfate,while the solubility of copper ammonium sulfate is greater than that of nickel ammonium sulfate.So,by adding(NH_(4))_(2)SO_(4),the Ni can be selectively crystallized from the copper electrolyte.By adding(NH_(4))_(2)SO_(4)at the molar ratio of(NH_(4))_(2)SO_(4)/NiSO_(4)≤0.8,and crystallizing at−15℃for 10 h,the Ni in the copper electrolyte can be crystallized in the form of Ni(NH_(4))_(2)(SO_(4))_(2)×6H_(2)O.The qualified product of NiSO_(4)×6H_(2)O can be obtained by pyrolyzing the crystals,dissolving the pyrolysis product in water,and then concentrating the dissolved solution for crystallization.The method of double salt crystallization is a clean,environmentally-friendly,cost-effective and efficient method for separating and recovering nickel from copper electrolyte.
文摘The complex [Et4N][(Ph3P)2{CuS2WS2Fe} Br2] (1 ), C44, H50NBr2CuFeP2S4W, M4= 1246. 13, has been obtained by reaction of [Et4N]2[WS4] andFeBr2 with Cu (Ph3P )3I in MeCN/CH2Cl2. Crystal data for [Et4N][(Ph3P)2{CuS2WS2Fe) Br2] (1): triclinic, P1, Z = 2, a= 13. 495 (7), b = 15. 322 (5), c =12. 361 (4), a=105. 32(3), β=93. 19(4), γ=101. 35(4) and V=2401. 2 The bond lengths of W-Fe bond and the W-Cu distance are 2. 793(2) A and 2. 823(2), respectively. Three kind metal atoms of the title structure [Et4N][(Ph3P)2{CuS2WS2Fe}Br2] (1) are nearly distributed along a line, and along which three metalatoms (W, Cu, Fe) are approximately tetrahedral coordination.
