Chemistry of Borate(ⅩⅩⅩⅠ) Crystallization Kinetics of Mg-borates from MgO·2B2O3-18%MgSO4-H2O Supersaturated Solution

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (1): 18.

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Chemistry of Borate(ⅩⅩⅩⅠ) Crystallization Kinetics of Mg-borates from MgO·2B₂O₃-18%MgSO₄-H₂O Supersaturated Solution

MA Yu-Tao^1,3, XIA Shu-Ping¹, GAO Shi-Yang^1,2

1. Xi'an Branch, Institute of Salt Lakes, Chinese Academy of Sciences, Xi'an 710043, China;
2. Institute of App lied Chemistry, Shanxi Normal University, Xi'an 710062, China;
3. College of Chemical Engineering, Qinghai University, Xining 810016, China

Received:2000-12-28 Online:2002-01-24 Published:2002-01-24

Abstract

Abstract: The supersaturated solution of MgO·2B₂O₃-18% MgSO₄-H₂O was prepared and then kept in the thermostat of (0±0.1) ℃ and (20±0.1) ℃, respectively. The crystallization processes of Mg-bo-rates from the solution have been studied by the kinetic method. The crystallization kinetic equations were fitted from the experimental data. The solid phases were identified by IR-spectra, X-ray powder diffraction and TG-DSC thermal analysis.

Key words: Borate, Supersaturated solution, Hungchaoite, Crystallization kinetics

CLC Number:

O643.12

TrendMD:

MA Yu-Tao, XIA Shu-Ping, GAO Shi-Yang. Chemistry of Borate(ⅩⅩⅩⅠ) Crystallization Kinetics of Mg-borates from MgO·2B₂O₃-18%MgSO₄-H₂O Supersaturated Solution[J]. Chem. J. Chinese Universities, 2002, 23(1): 18.

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Chemistry of Borate(ⅩⅩⅩⅠ) Crystallization Kinetics of Mg-borates from MgO·2B₂O₃-18%MgSO₄-H₂O Supersaturated Solution

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