| 288 K下Li+,K+//CO2-3,B4O2-7-H2O四元体系的相平衡 |
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| 引用本文： | 殷辉安,桑世华,唐明林,曾英.288 K下Li+,K+//CO2-3,B4O2-7-H2O四元体系的相平衡[J].化工学报,2004,55(3):464-467. |
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| 作者姓名： | 殷辉安 桑世华 唐明林 曾英 |
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| 作者单位： | 成都理工大学化工与制药系,四川,成都,610059;成都理工大学化工与制药系,四川,成都,610059;成都理工大学化工与制药系,四川,成都,610059;成都理工大学化工与制药系,四川,成都,610059 |
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| 基金项目： | 国家自然科学基金资助项目(No.49773200). |
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| 摘 要： | Solubilities and properties (density, conductivity and pH value) of solutions in the quaternary system Li+,K+//CO2-3,B4O2-7-H2O at 288 K were experimentally studied with the isothermal equilibrium method. The phase diagram of the system consisted of two invariant points E and F, five univariant curves, and four crystallization fields that belonged to K2CO3·3/2H2O，Li2B4O7·3H2O，K2B4O7·4H2O and Li2CO3. The composition of the solution corresponding to E was w（CO2-3）=2.27 %，w（B4O2-7）=6.05 %，w（K+ ）=4.30%，w(Li+)=0.30 % and the equilibrium solids were Li2B4O7· 3H2O+K 2B4O7·4H2O+Li2CO3;The composition of the solution for F was w(CO2-3)=22.45%，w(B4O2-7)=1.88%，w(K+ )=29.96%，w(Li+ )=0.03% and the equilibrium solids were K2CO3·3/2H2O+K 2B4O7·4H2O+Li2CO3. K2CO3 possesses strong salting-out effect on K2B4O7,Li2CO3 and Li2B4O7.
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| 关 键 词： | 水盐体系 相平衡 硼酸盐 碳酸盐 |
| 文章编号： | 0438-1157(2004)03-0464-04 |
| 收稿时间： | 2003-5-5 |
| 修稿时间： | 2003年5月5日 |
EQUILIBRIUM OF QUATERNARY SYSTEM Li+,K+//CO2-3,B4O2-7-H2O AT 288 K |
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| YIN Hui’an,SANG Shihua,TANG Minglin,ZENG Ying.EQUILIBRIUM OF QUATERNARY SYSTEM Li+,K+//CO2-3,B4O2-7-H2O AT 288 K[J].Journal of Chemical Industry and Engineering(China),2004,55(3):464-467. |
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| Authors: | YIN Hui’an SANG Shihua TANG Minglin ZENG Ying |
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| Abstract: | Solubilities and properties (density, conductivity and pH value) of solutions in the quaternary system Li+,K+//CO2-3,B4O2-7-H2O at 288 K were experimentally studied with the isothermal equilibrium method. The phase diagram of the system consisted of two invariant points E and F, five univariant curves, and four crystallization fields that belonged to K2CO3·3/2H2O，Li2B4O7·3H2O，K2B4O7·4H2O and Li2CO3. The composition of the solution corresponding to E was w（CO2-3）=2.27 %，w（B4O2-7）=6.05 %，w（K+ ）=4.30%，w(Li+)=0.30 % and the equilibrium solids were Li2B4O7· 3H2O+K 2B4O7·4H2O+Li2CO3;The composition of the solution for F was w(CO2-3)=22.45%，w(B4O2-7)=1.88%，w(K+ )=29.96%，w(Li+ )=0.03% and the equilibrium solids were K2CO3·3/2H2O+K 2B4O7·4H2O+Li2CO3. K2CO3 possesses strong salting-out effect on K2B4O7,Li2CO3 and Li2B4O7. |
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| Keywords: | salt-water system phase equilibrium borate carbonate |
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