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首页> 外文期刊>Applied Sciences >Magnesium Oxybromides MOB-318 and MOB-518: Brominated Analogues of Magnesium Oxychlorides
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Magnesium Oxybromides MOB-318 and MOB-518: Brominated Analogues of Magnesium Oxychlorides

机译：镁氧基族MOB-318和MOB-518：溴化镁的溴化类似物的溴化镁

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摘要

The search for environmentally sustainable building materials is currently experiencing significant expansion. It is increasingly important to find new materials or reintroduce those that have been set aside to find a good replacement for Portland cement, which is widely used despite being environmentally insufficient and energy-intensive. Magnesium oxybromides, analogues to well-known magnesium oxychloride cements, fit both categories of new and reintroduced materials. In this contribution, two magnesium oxybromide phases were prepared and thoroughly analyzed. The stoichiometries of the prepared phases were 5Mg(OH) 2 ?MgBr 2 ?8H 2 O and 3Mg(OH) 2 ?MgBr 2 ?8H 2 O. The phase analysis was determined using X-ray diffraction. The morphology was analyzed with scanning and transmission electron microscopy. The chemical composition was studied using X-ray fluorescence and energy dispersive spectroscopy. Fourier transform infrared spectroscopy was also used. The thermal stability and the mechanism of the release of gasses linked to the heating process, such as water and hydrobromic acid evaporation, were analyzed using simultaneous thermal analysis combined with mass spectroscopy. The obtained results were compared with the data available for magnesium oxychlorides.
机译：搜索环境可持续建筑材料目前正在经历重大扩张。寻找新材料或重新引入那些已被留给的人越来越重要，以找到波特兰水泥的良好替代品，尽管环境不足和能量密集型，但仍广泛使用。镁氧基族，类似于公知的氯氧化镁水泥的类似物，适用于新的新和重新介绍的材料。在这一贡献中，制备了两种镁氧基阶段并彻底分析。制备相的成分为5mg（OH）2？MgBr 2 2 O 2 O和3mg（OH）2 2 O 2 O.使用X射线衍射测定相分析。用扫描和透射电子显微镜分析形态。使用X射线荧光和能量分散光谱研究化学组合物。还使用傅里叶变换红外光谱。使用同时热分析与质谱相结合，分析与加热过程相关的气体释放的热稳定性和释放机构，例如水和氢溴酸蒸发。将得到的结果与可用于氯氧化镁的数据进行比较。

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