酸酸铁水分循环:揭示了化碳酸中固体-液体接口的影响
Joseba Udaeta1, Mikel Oregui Bengoechea1, Francesco Torre2
1Department of Chemical and Environmental Engineering, School of Engineering, University of the Basque Country UPV/EHU, Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, Spain.
ACS applied materials & interfaces
|June 19, 2024
概括
碳酸盐混合物在热化学循环中进行了生产的测试. 虽然一些混合物改善了最初的输出,但由于相位形成和烧结,所有混合物都显示出显著的可逆性损失.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 酸铁酸盐在热化学循环中用于生产.
- 碳酸 (Na2CO3) 是这个循环中的一个关键组成部分.
- 研究替代碳酸盐可以提高循环效率.
研究的目的:
- 为了评估Na2CO3用各种eutectic或eutectoid碳酸盐混合物替代的影响.
- 评估这些替代对生产速度和可逆性的影响.
- 了解影响循环性能的潜在机制.
主要方法:
- 使用酸酸盐的热化学循环实验.
- 用不同的碳酸盐混合物 (eutectic和eutectoid) 替换Na2CO3.
- 热力学计算和现场光学显微镜用于机制分析.
主要成果:
- 欧特体 (Li0.07Na0.93) 2CO3混合物加速了的产生,并将最大的时间转移到更短的时间.
- 鉴定出欧特碳酸盐的部分化是改善离子扩散的原因.
- 所有测试的混合物在循环循环时显示出生产可逆性的显著损失.
- 非替代的Na混合物显示出最高的可逆性,其次是7%的Li-Na混合物.
- 50%Li-Na和Li-K-Na混合物在第一个循环后未能产生气.
结论:
- 碳酸盐混合物可以影响酸热化学循环中酸铁素生产的动力学.
- 特定碳酸盐混合物的部分化可以提高初始输出.
- 丧失可逆性是一个关键问题,与不必要的相位形成和烧结有关,特别是在化碳酸盐混合物中.
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