Crystallization of Complexes Characterized with Streaming Potential Measurement
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- 作者：Jian Wang ; Wei-xing Ma ; Fu-jun Yin ; Xing-you Xu ; Lu-de Lu ; Xv-jie Yang ; Xin Wang ; Yun-long Zang ; En-wei Lin
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2010
- 出版时间：April 8, 2010
- 年：2010
- 卷：55
- 期：4
- 页码：1473-1476
- 全文大小：184K
- 年卷期：v.55,no.4(April 8, 2010)
- ISSN：1520-5134
文摘
The streaming potential of supersaturated solutions of K3[Fe(CN)6] and K4[Fe(CN)6] was determined to characterize crystallization under declining temperature conditions. The value of the streaming potential was related to the oxidation state of the iron atom in the complex, the solubility of the complex, and the starting temperature of crystallization. It was easily influenced by the thermal influence, the polarization of the electrode, the hydrolyzation of the complex, and the rate of the temperature decline. When the temperature dropped to the point where crystal nuclei appeared, the streaming potential reached a minimum. Thereafter, as the number of crystal nuclei increased, some minicrystals grew, and the streaming potential presented a tendency to increase. The higher the starting temperature of the complex saturated solution is, the higher temperature corresponding to the value of the streaming potential minimum is. The temperature of the streaming potential minimum in the K3[Fe(CN)6] supersaturated solution is lower than that in the K4[Fe(CN)6] supersaturated solution.