基于酸性金属的功能性离子液体催化生物基PEF聚的合成
Qiao Zhou1, Yuanyuan Zhao1, Yafei Shi1
1School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang 111003, China.
Polymers
|January 11, 2024
概括
合成并测试了新的酸性离子液体催化剂,用于从2,5-furandicarboxylic 酸和乙烯糖醇中生产聚 (乙烯2,5-furandicarboxylate) (PEF). 锡基催化剂在这种绿色化学应用中表现出卓越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 聚合物化学 聚合物化学
背景情况:
- 开发高效和可回收的催化剂对于可持续的化学合成至关重要.
- 离子液体为各种催化应用提供可调节的特性.
- 聚 (乙烯2,5-基碳酸盐) (PEF) 是一个有前途的生物基聚合物替代品.
研究的目的:
- 为了合成新的基于酸性金属的功能化离子液体催化剂.
- 在PEF合成中研究这些离子液体的催化性能.
- 为了优化反应条件并描述产生的PEF聚合物.
主要方法:
- 合成五种基于酸性金属的功能化离子液体 ([DA-2PS][XCly]2) 使用三乙烯二胺,1,3-propanesultone 和金属化物.
- 催化剂结构,热稳定性和酸性位点的表征.
- 由合成的离子液体催化的2,5-furandicarboxylic 酸 (FDCA) 和乙烯糖醇 (EG) 的化反应.
- 使用响应表面方法来优化反应参数.
- 合成的PEF聚合物的特性 (内在粘度,分子量,热稳定性).
主要成果:
- 成功合成了五种新的基于酸性金属的功能化的离子液体.
- [DA-2PS][SnCl5]2显示了PEF合成的最高催化活性.
- 确定了最佳反应条件:EG:FDCA比为1.96:1,化温度为219.86°C,多重凝结温度为240.04°C,时间为6.3小时.
- 在最佳条件下合成的PEF表现出0.68dL·g-1的内在粘度和28,820g·mol-1的数值平均分子量.
- 合成的PEF显示出正确的结构,高热稳定性和优良的热性能.
结论:
- 基于酸性金属的功能化离子液体,特别是[DA-2PS][SnCl5]2,是PEF合成的有效催化剂.
- 使用响应表面方法的优化反应条件使得有效的PEF生产成为可能.
- 合成的PEF具有潜在应用的理想特性,突显了这种催化系统的可行性.
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