论文部分内容阅读
VO_3~-和MoO_4~(2-)在强酸性介质中的阴离子交换行为已有研究,但国产强碱性阴离子交换剂在碱性介质中对于VO_2~-和MoO_4~(2-)的交换性能尚未见公开报导。本文在研究VO_3~-和MoO_4~(2-)在强碱性介质中的交换性能,如分配比和交换率等,以期分离VO_3~-和MoO_4~(2-)。结果表明在2N NaOH介质中VO_3~-交换能力弱,易洗下,而MoO_4~(2-)在此条件下仍基本保留。然后换用1N NaOH+1M NaCl溶液易将MoO_4~(2-)洗下,从而达到了较好的分离。
The anion-exchange behavior of VO_3~- and MoO_4~(2-) in strongly acidic media has been studied, but the exchange performance of domestic strongly basic anion exchangers for VO_2~- and MoO_4~(2-) in alkaline media has been studied. No public report has been found. In this paper, the exchange properties of VO_3~- and MoO_4~(2-) in strong alkaline media, such as partition ratio and exchange rate, were studied in order to separate VO_3~- and MoO_4~(2-). The results showed that the VO 3 -exchange capacity in 2N NaOH medium was weak and easy to wash, while MoO 4 -(2-) was still retained under this condition. Then use 1N NaOH+1M NaCl solution to wash the MoO_4~(2-) easily, so as to achieve better separation.