杂多酸制备过程,结晶问题?我在杂多酸盐,在做重结晶时,文献上说最后用水重结晶,感觉很是不懂,大家帮我看看,用水重结晶具体怎么操作,文献表述为如下:The sodium salt of lacunary heteropoly compound modifiedwith cobalt ion was prepared according to literature [28–30]. FirstPW12 (2.88 g) was dissolved in water (10 mL) and the pH of thesolution was adjusted to 4.8 using NaHCO3 solution. This resultedin the formation of lacunary heteropoly anion [PW11O39]7. Thesolution having pH 4.8 was heated to 90 C with constant stirring.Then to it a solution of Co(NO3)26H2O (0.29 g) in water (10 mL)was added. The NaCoPW11 was obtained by solvent evaporation,and recrystallization from water, followed by subsequent dryingat 110 C for 12 h.查看更多3个回答 . 5人已关注