探析镁与碱性盐溶液反应的复杂性与可行性——以镁与碳酸钠溶液反应为例

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英文篇名：Complexity and Feasibility of Reaction of Magnesium and Alkaline Salt Solutions:Reaction of Magnesium and Sodium Carbonate Solution 作者：周学工 ; 吴文中 英文作者：ZHOU Xue-Gong;WU Wen-Zhong;Teaching and Research Department in Haining;Yuezhou High School; 关键词：镁 ; 碳酸钠 ; 碱性盐溶液 ; 碱式碳酸镁 ; 溶解保护层 英文关键词：Mg;;Na_2CO_3;;alkaline salt solution;;basic magnesium carbonate;;dissolution of the protective layer 中文刊名：FXJJ 英文刊名：Chinese Journal of Chemical Education 机构：浙江省海宁市教研室;浙江省越州中学; 出版日期：2019-08-02 出版单位：化学教育(中英文) 年：2019 期：v.40 语种：中文; 页：FXJJ201915016 页数：5 CN：15 ISSN：10-1515/O6 分类号：73-77

摘要

一次验证镁与NaHCO_3溶液反应得到H_2的实验中,发现镁能与饱和Na_2CO_3溶液作用持续释出H_2,为此通过分析Mg/H_2O体系的热力学数据和研究其动力学机理认为实现镁与水溶液作用能持续释出H_2的有效方法:在溶液中加入能破坏氢氧化镁保护层的某些离子。并设计有关实验证明:在碱性溶液中,若加入能与Mg~(2+)形成稳定配合物的其他阴离子(如甘氨酸根离子、草酸根离子、EDTA等),则镁就能与碱性的盐溶液持续反应。
        H_2 gas was observed to emit continuously from the NaHCO_3 solution and Mg, H_2 also released continuously from saturated Na_2CO_3 solution and Mg. Therefore, this paper analyzed the thermodynamic data and the kinetic mechanism of the reaction of Mg and H_2O, the results showed that H_2 gas could continuously produce from the reaction of Mg and H_2O by adding some organic ligands(such as glycine ion, oxalate ion, EDTA and etc) or chemicals(such as alkaline salt solution) which could destroy the protective layer of magnesium hydroxide.

引文

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