论文部分内容阅读
研究了用两种中性有机磷类比合物——磷酸三了脂(TBP)和三辛基氧膦(TOPC)以及两种高分子量的胺类萃取剂——三辛胺(TCA)和三辛基甲基氯化铵(TOMAC)从盐酸溶液中萃取铼(Ⅶ)。试验结果表明,TBP,TOPO,TOA,TOMAC的萃取平衡可以表示为:ReO_3Cl有十nS_有 ReO_3ClnS有,式中,n=4和2(分别对S=TBP和TOPO而言);HReO_4水十R_3NHCl有 R_3NH_2ReO_4Cl有(对TOA而言);ReO_4-水十R_3R′NCl有 R_3R′NReO_4有十C1-水(对TOMAC而言)。在上述萃取体系中,铼(Ⅷ)的萃取率按下列顺序递减。在低酸度下:TOA>TOMAC>TOPO>TBP,在较高的酸度下:TOMAC>TOA>TOPO>TBP。
The effects of two neutral organic phosphorus compounds, TBP and TOPC, and two high molecular weight amine extractants, TCA and TCA, Octylmethylammonium chloride (TOMAC) extracts rhenium (VII) from a hydrochloric acid solution. The experimental results show that the extraction equilibrium of TBP, TOPO, TOA and TOMAC can be expressed as follows: ReO_3Cl has ten nS_ with ReO_3ClnS, where n = 4 and 2 (for S = TBP and TOPO respectively); HReO_4 R_3NHCl has R_3NH_2ReO_4Cl with (for TOA); ReO_4-water with R_3R’NCl has R_3R’NReO_4 with 10 Cl-water (for TOMAC). In the above extraction system, rhenium (Ⅷ) extraction rate decreases in the following order. At low acidity: TOA> TOMAC> TOPO> TBP at higher acidity: TOMAC> TOA> TOPO> TBP.