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首页> 外文期刊>Journal of Energy Storage >Investigation of Ca_(12)Al_(14)O_(33) Mayenite for hydration/dehydration thermochemical energy storage
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Investigation of Ca_(12)Al_(14)O_(33) Mayenite for hydration/dehydration thermochemical energy storage

机译：CA_（12）AL_（14）O_（33）矿石水合/脱水热化学能量储存的研究

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摘要

Thermal energy storage using a reversible chemical reaction is a key parameter for increasing the storage ca-pacity especially for medium and high temperature applications. The reversible hydration/dehydration reaction of calcium hydroxide Ca(OH)(2) to calcium oxide CaO is among the most investigated system due to its reaction cyclability and interesting operating temperature above 450 degrees C suitable for high temperature applications. However, the indicated reaction temperature was considered too high for some industrial applications which limit a further development of thermal energy storage technologies using this promising reaction system. In this regard, the material development is a key point to broaden the application of sustainable technologies. In this work, the investigation of Mayenite with general formula Ca12Al14O33 as a thermochemical energy storage material was conducted. Thereby, it was confirmed the possibility of the pair "Ca12Al14O12(OH)(42)"/Ca12Al14O33 to store and release the heat through chemical reaction thanks to a novel activation process of the pristine Mayenite that is presented for the first time in this work. This study might help to identify new pairs based on materials that have already been classified as inactive for the hydration/dehydration reaction. In addition, it was found that the hydration reaction temperature of "Ca12Al14O12(OH)(42)"/Ca12Al14O33 pair of 228 degrees C is much lower compared to that of CaO/Ca(OH).
机译：使用可逆化学反应的热能储存是用于增加储存Ca-Pacity的关键参数，特别是对于中型和高温应用。氢氧化钙Ca（OH）（2）至氧化钙CaO的可逆水合/脱水反应是由于其反应性环度性和高于450℃的有趣工作温度，适用于高温应用的最多调查的系统。然而，对于某些工业应用，所示的反应温度被认为太高，这限制了使用该有前途的反应系统的热能储存技术的进一步发展。在这方面，材料发展是扩大可持续技术应用的关键点。在这项工作中，进行了用通式Ca12Al14O33作为热化学能量储存材料的腐蚀剂的研究。由此，证实了一对“Ca12A112012（OH）/ Ca12Al12A1033的可能性通过化学反应通过化学反应存储和释放热量，这是由于这项工作中第一次呈现的原始型矿石的新型活化过程。该研究可能有助于识别基于已经被分类为不活性的材料用于水合/脱水反应的材料。此外，发现与CaO / Ca（OH）的水合反应温度为“Ca12Al14O12（OH）/ Ca12Al14O33对228℃的低得多。

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