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Citation: ZHANG Li-Chuan, CHEN Qi-Yuan, YIN Zhou-Lan. Investigation of the Homogeneous Nucleation of Al(OH)₃ Crystals from Supersaturated Sodium Aluminate Solution by Conductance Probe[J]. Acta Physico-Chimica Sinica, ;2008, 24(06): 1111-1114. doi: 10.3866/PKU.WHXB20080635 shu

Investigation of the Homogeneous Nucleation of Al(OH)₃ Crystals from Supersaturated Sodium Aluminate Solution by Conductance Probe

1.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China

Received Date: 18 January 2008
Available Online: 21 April 2008

This paper presents the application of a novel conductance detector together with a self-made conductance probe, for studying the homogeneous nucleation of Al(OH)3 from supersaturated sodium aluminate solution under isothermal, batch crystallization conditions. The effects of supersaturation on indication period were examined. The nucleation kinetics showed a (4±1)-order dependence upon Al2O3 relative supersaturation and an interfacial energy of (40.6±2.0) mJ·m-2, which were used to predict the critical nucleus size of (1.1±0.2) nm at 323 K, S>3.8. These results were consistent with those in literatures, indicating the satisfactory reliability and sensitivity of the apparatus.
- Sodiumaluminate solution; Homogeneous nucleation; Measuring online; Conductance
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Investigation of the Homogeneous Nucleation of Al(OH)3 Crystals from Supersaturated Sodium Aluminate Solution by Conductance Probe

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通讯作者: 陈斌, bchen63@163.com

Investigation of the Homogeneous Nucleation of Al(OH)₃ Crystals from Supersaturated Sodium Aluminate Solution by Conductance Probe