摘要
研究了石油亚矾(PSO)萃取钨与硅的分配行为,采用等摩尔系列法测定了萃合物中钨与硅的比列;考察有机相萃合物的红外光谱,发现PSO在pH=2～5的弱酸性条件下,能萃取12-钨硅杂多酸;又12-钨硅酸在萃合物中仍保持了α-Keggin结构。
The distribution behavior in tungsten nnd silicon extraction with petroleum sulfoxide (PSO) was studied. The ratio of tungsten and silicon in the extraction complex has been determined by method of isomolar series. In examining the infrared spectra of the extraction complex in organic phase, it was found that PSO could extract 12-silicotungstic heteropolyacid in weakly acidic medium with pH 2～5 and the 12-silicotungstic acid retained the α-Keggin structure in the extraction complex.
关键词
萃取
钨
硅
石油亚砜
12钨硅酸
extraction
tungsten
silicon
petroleum sulfoxide
12-silicotungstic acid
