Optimum conditions for Al13 polymer formation in PACl preparation by electrolysis process.
Optimum conditions for Al13 polymer formation in PACl preparation by electrolysis process.
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DOI：
10.1016/j.chemosphere.2003.10.058
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发表时间：
2004-04
期刊：
影响因子：
8.8
通讯作者：
J. Qu;Huijuan Liu
中科院分区：
文献类型：
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作者：
J. Qu;Huijuan Liu
本文介绍了一种新的、有效的电解制备pacl的方法。采用电解法制备了一系列高含量al13聚合物PACl。电解过程中al13聚合物的形成量受电流密度、电极间距、电解时间和电解液搅拌速率的影响较大。对于电解得到的2.0 M PACl的AlT（总铝浓度），电极间的最佳距离分别为1.1 Adm−2和10 mm。最佳循环速率为5.5 lh−1。由于阴极表面与本体溶液之间的pH不均匀，电解工艺有利于形成更多的Al(OH)4−作为al13聚合物的前驱体。在最佳条件下，al13聚合物占AlT的70%以上（AlT=2.0 M和B=2.0的PACl），远远高于其他方法制备的PACl。
This paper introduces a new and effective method for preparation of PACl-electrolysis process. A series of PACl with high content of Al13polymer was successfully prepared by electrolysis process. The amount of Al13polymer formed in electrolysis process was found to be highly influenced by current density (di), the distance between the electrodes, electrolysis time and the stirring rate of the electrolyte. For the AlT(total aluminum concentration) of 2.0 M PACl obtained by electrolysis process, the optimal diand distance between the electrodes were 1.1 Adm−2and 10 mm respectively. The optimum circulating rate was 5.5 lh−1. Because of the inhomogeneous pH between the surface of cathode and the bulk solution, the electrolysis process has the advantage to form more Al(OH)4−as precursor of Al13polymer. At the optimum condition, Al13polymer accounted for above 70% of AlT(PACl of AlT=2.0 M and B=2.0), which was much higher than that of PACl prepared by other method.