| MgB_4O_7-Na_2B_4O_7-H_2O三元体系288K介稳相平衡研究 |
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| 引用本文： | 侯彩红,桑世华,魏凤,张振雷.MgB_4O_7-Na_2B_4O_7-H_2O三元体系288K介稳相平衡研究[J].化工矿物与加工,2009,38(4). |
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| 作者姓名： | 侯彩红 桑世华 魏凤 张振雷 |
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| 作者单位： | 成都理工大学材料与化学化工学院,四川,成都,610059 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，四川省杰出青年学科带头人培养资助计划 |
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| 摘 要： | 采用等温蒸发法进行了MgB4O7-Na2B4O7-H2O三元体系288 K时的介稳相平衡研究,测定了该体系介稳相平衡的溶解度和密度.研究发现该三元体系为简单共饱和型,未见复盐和固溶体形成.根据溶解度数据绘制了相图,相图中有一个三元共饱点、两条单变量曲线.平衡固相为MgB4O7*9H2O 和Na2B4O7*10H2O.在该介稳相平衡中发现MgB4O7的溶解度明显增大.由相图可知:Na2B4O7对MgB4O7有盐溶作用.
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| 关 键 词： | 水盐体系 介稳相平衡 硼酸盐 |
Study on metastable phase equilibria of ternary system MgB_4O_7-Na_2B_4O_7-H_2O at 288K |
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| HOU Cai-hong,SANG Shi-hua,WEI Feng,ZHANG Zhen-lei.Study on metastable phase equilibria of ternary system MgB_4O_7-Na_2B_4O_7-H_2O at 288K[J].Industrial Minerals and Processing,2009,38(4). |
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| Authors: | HOU Cai-hong SANG Shi-hua WEI Feng ZHANG Zhen-lei |
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| Affiliation: | College of Materials and Chemistry & Chemical Engineering;Chengdu University of Technology;Chengdu Sichuan 610059;China |
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| Abstract: | Study on metastable phase equilibria at 288K in MgB4O7-Na2B4O7-H2O ternary system was done by the method of isothermal evaporation.Solubilities and densities of the metastable equilibrium solution were determined.The results showed that the system was of simple eutectic type and no double salt and solid solution were formed in MgB4O7-Na2B4O7-H2O Ternary System at 288K.The Metastable Equilibrium Phase Diagram was plotted by referring to the experimental data.In the phase diagram of the ternary system,there w... |
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| Keywords: | salt-water system metastable phase equilibria borate |
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