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三(2-乙基己基)磷酸酯萃取金的机理 被引量:2
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作者 李玲颖 周永洽 安晏 《化学试剂》 CAS CSCD 北大核心 1991年第3期145-148,134,共5页
通过对三(2-乙基己基)磷酸酯(TEHP)萃取 HAuCl_4的稀释剂效应,以及萃合物的紫外光谱、红外光谱、核磁共振谱和电导率的研究提出了一种新的称之为“溶解度型离子对缔合”的萃取机理,即在 TEHP 中的 P=O 基直接与 AuCl^(4-)配合构成一个... 通过对三(2-乙基己基)磷酸酯(TEHP)萃取 HAuCl_4的稀释剂效应,以及萃合物的紫外光谱、红外光谱、核磁共振谱和电导率的研究提出了一种新的称之为“溶解度型离子对缔合”的萃取机理,即在 TEHP 中的 P=O 基直接与 AuCl^(4-)配合构成一个五配位金(Ⅲ)的大阴离子,再与质子化的 TEHP阳离子生成不带电荷的可萃取缔合物[H(TEHP)_(?)]^+·[TEHP(AuCl_4)]^-(n=1,2)。 ‘ 展开更多
关键词 tehp 萃取
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Efficient Facilitated Transport of Lead and Cadmium Across a Plasticized Triacetate Membrane Mediated by D2EHPA and TOPO 被引量:1
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作者 Omar Arous Fairouz Saad Saoud +1 位作者 Mourad Amara Hacène Kerdjoudj 《Materials Sciences and Applications》 2011年第6期615-623,共9页
Cellulose triacetate membranes doped with organo-phosphoric carriers (2-ethylhexyl) phosphoric acid noted (D2EHPA) or trioctyl phosphine oxide noted (TOPO) as fixed carriers and 2-nitro phenyl octyl ether noted (NPOE)... Cellulose triacetate membranes doped with organo-phosphoric carriers (2-ethylhexyl) phosphoric acid noted (D2EHPA) or trioctyl phosphine oxide noted (TOPO) as fixed carriers and 2-nitro phenyl octyl ether noted (NPOE) or tris ethylhexyl phosphate noted (TEHP) as a plasticizers have been prepared and applied for investigation to the facilitated transport of Pb(II) and Cd(II) ions from aqueous nitrate source phase. The membranes Polymer-Plasticizer- Carrier were characterised using chemical techniques as well as Fourier Transform Infra-Red (FTIR), X-ray Diffraction and Scanning electron microscopy (SEM). A study of the transport across a polymer inclusion membrane has shown that the lead or cadmium transport efficiency was increased using D2EHPA as carrier at pH 1-2. 展开更多
关键词 CELLULOSE Triacetate NPOE tehp D2EHPA TOPO MEMBRANE
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