通过介导的乙氧化来合成高碳糖醇,作为潜在的相变材料
Markus Draskovits1, Nina Biedermann1, Marko D Mihovilovic1
1Institute of Applied Synthetic Chemistry, TU Wien, Vienna, Austria.
研究人员合成了新的糖醇,用于储存热能. "完美的"八碳糖酒精在260°C时表现出高热 (380 J/g),验证了这些有机相变材料 (PCM) 的计算预测.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 糖醇被探索为热能存储的有机相变材料 (PCM),提供高热存储密度.
- 计算研究预测了与1,3-抗基组关系的特定高碳糖醇的异常高的能量储存能力 (450-500 J/g).
- 这些有前途的曼诺配置糖醇的实验研究和高效合成仍然具有挑战性.
研究的目的:
- 开发一个简洁的合成协议,用于曼诺配置的高碳糖醇.
- 实验评估合成糖醇作为PCM的热性质,特别是和点的潜热.
- 为了验证这些化合物的热能储存潜力的计算预测.
主要方法:
- 合成曼诺配置的糖醇,使用介导的基化 (IMA) 的阿尔多.
- 合成化合物的表征,包括C2 - epimers (葡萄糖配置).
- 差分扫描热量计 (DSC) 或类似的热分析以确定融合和点的潜在热量.
主要成果:
- 对于曼诺配置的糖醇,建立了一个简洁的合成路线.
- 合成的八碳"完美"糖酒精在260°C的点下表现出大约380 J/g的高潜热聚变.
- 合成的化合物显示了与计算预测一致的热特性,验证了它们作为高性能PCM的潜力.
结论:
- 以为媒介的乙氧化 (IMA) 提供了一条高效的途径来合成曼诺配置的糖醇.
- 经过实验确定的高隐性聚变热量证实了这些糖醇作为热能存储的先进有机相变材料的潜力.
- 这项工作弥合了基于高性能糖醇的PCM的理论预测和实验验证之间的差距.
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