论文部分内容阅读
本文用~(27)Al-NMR谱研究了聚合氯化铝(PAC)水溶液中Al的形态,实验表明有单聚体铝Al(H_2O)_6~(3+)、二聚铝(H_2O)_4Al■Al(H_2O)_4、体型十三聚铝[AlO_4Al_(12)(OH)_(24)(H_2O)_(12)]~(7+)■的存在,并用定量方法估算出体型三聚铝[Al_3(OH)_4(H_2O)_(?)]_-~(5+)和十二聚铝[Al_(12)(OH)_(28)(H_2O)_(12)]_-~(8+)可能是亚稳中间体。
In this paper, the morphology of Al in polyaluminum chloride (PAC) aqueous solution has been studied by ~ (27) Al-NMR spectroscopy. The experimental results show that Al (H 2 O) 6 ~ (3+), dimer aluminum (H 2 O) ■ Al (H_2O) _4, the size of tridecyl aluminum [AlO_4Al_ (12) (OH) _ (24) (H_2O) _ (12)] ~ [Al_3 (OH) _4 (H_2O) __] __ ~ (5+) and dodecamethylaluminum [Al_ (12) (OH) _ (28) (H_2O) _ (12)] __ 8+) may be metastable intermediates.