| 模拟合成盐卤与盐酸反应的热化学研究 |
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| 引用本文： | 李武,高世扬,曾忠民,夏树屏.模拟合成盐卤与盐酸反应的热化学研究[J].物理化学学报,1995,11(12):1101-1104. |
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| 作者姓名： | 李武 高世扬 曾忠民 夏树屏 |
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| 作者单位： | Institute of Qinghai Salt Lakes,Academia Sinica,Xining 810008 |
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| 基金项目： | 盐卤硼酸盐化学Ⅹ Ⅹ Ⅶ基金，中国科学院重点基金 |
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| 摘 要： | 青藏高原新类型盐湖卤水日晒蒸发过程中硼酸盐在浓缩卤水中富集L‘。，我们在前又问中曾报道天然浓缩盐卤中硼酸盐是以“四硼酸盐”的综合统计形式存在，当盐卤浓缩到氯化镁共饱和时，可视为MgO－BZO3－MgC12－HZO四元体系中的一个特定的膺三元体系MgO·2B2O3－MgC12－H。O．该四元体系20oC热力学非平衡态液固相图问与25oC热力学平衡态相图＊存在较大差别．由于聚合翻氧配阴离子的存在，使得对含棚浓缩盐卤的研究变得复杂而困难＊．李积才等“～SJ对合成盐卤的稀释热和表观摩尔热径进行过测定，李军间在对多种水合硼酸盐在盐酸中…
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| 关 键 词： | 四硼酸镁 氯化镁溶液 量热滴定 反应机制 |
| 收稿时间： | 1995-02-28 |
| 修稿时间： | 1995-04-24 |
Study on the Reaction Thermochemistry of Simulated Synthesized Brine during Hydrochloric Acid Titration |
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| Li Wu, Gao Shiyang ,Zeng Zhongmin, Xia Shuping.Study on the Reaction Thermochemistry of Simulated Synthesized Brine during Hydrochloric Acid Titration[J].Acta Physico-Chimica Sinica,1995,11(12):1101-1104. |
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| Authors: | Li Wu Gao Shiyang Zeng Zhongmin Xia Shuping |
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| Institution: | Institute of Qinghai Salt Lakes,Academia Sinica,Xining 810008 |
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| Abstract: | The enthalpy changes of Mg0 .2B2O3-27.56% MgCl2-H2O and H3BO3-27.56%MgCls-H2O solution during azeotropic hydrochloric acid titration have been studied withSweden LKB8700-1 precise calorimeter. The results indicated that the reaction enthalpy changes of solutes (expressed as H3BO3 and Mg0.2B203) increase with the increase of their concentrations in the solution. Combined with the pH titration curves ofMg0 .2B2O3-27.56% MgCl2-H2O with that of azeotropic hydrochloric acid, the reactionmechanism of the solutions with hydrochloric acid has been discussed. |
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| Keywords: | Magnesium tetraborate Magnesium chloride solution Calorimetric titration Mechanism |
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