Mechanism of Extracting Zinc and Cadmium with Thiophosphoric Acid-Primary Amine N1923
硫代磷酸/伯胺N1923协同萃取锌和镉的机理

有机硫代磷酸/伯胺N1923协同萃取锌、镉的萃取率随pH的变化较为反常,可能因伯胺N1923与硫酸作用进而聚为反向胶束.实验表明,如以(N1923)n@H2SO4表示反向胶束的实验式,N1923与H2SO4比值n多为3左右,可能与空间效应相关.萃取机理为M2+(a)+2BHA(o)+(2/n)SO2-4(a)=MA2(o)+(2/n)(Bn@H2SO4)(o)+2(1-2/n)H+(a),n=3,4,5.