基于双酸性Sn(IV) 的聚氧甲酸盐用于单催化转移化-醇化级联反应
Yunyun Liu1, Daiyu Song1, Zhao Huang1
1School of Environment, Northeast Normal University, Changchun 130117, PR China.
Journal of colloid and interface science
|June 25, 2025
概括
这项研究引入了一种新型的一合成异乙酸盐 (IPL) 来自furfural (FAL) 使用双酸多氧甲酸盐 (POMs). 优化的基于Sn的POM催化剂实现了高FAL转换和IPL产量,证明了生物质转换的出色稳定性.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 生物质衍生furfural (FAL) 的高效转化为价值化学物质,如异乙酸盐 (IPL),对于可持续化学至关重要.
- 传统的催化系统往往缺乏协同作用,缺乏可调节的酸性质,限制了级联反应的效率.
- 开发具有精确控制的易斯和布伦斯特酸位的多功能催化剂对于优化反应通路至关重要.
研究的目的:
- 建立一个简单的,高效的单合成协议,用于从furfural (FAL) 来获得异乙烯基酸盐 (IPL).
- 开发和调整双酸Keggin型聚氧甲酸盐 (POMs) 作为级联反应的催化剂.
- 研究生物质价值化优化POM催化剂的催化性能,机制和稳定性.
主要方法:
- 通过离子交换策略合成双酸Keggin型POMs,部分用金属化物取代H+离子.
- 通过不同的过渡金属和Keggin单位调整易斯酸 (LA) 和布伦斯特酸 (BA) 的特性.
- 催化剂的表征和评价在催化转移化 (CTH) -酒精溶解级联反应的FAL与2-propanol,包括动力学和机械学研究 (DFT,同位素追踪).
主要成果:
- 优化的催化剂,Sn0.25H2PW12O40,在443K时实现了95.4%的FAL转换和91.6%的IPL产量.
- 催化剂的低激活能 (Ea) 为32.74kJ mol-1,其性能优于传统和商业催化剂.
- Sn0.25H2PW12O40催化剂表现出极好的稳定性,在四个反应周期后保持其性能.
结论:
- 具有可调节的LA和BA特性的双酸Keggin型POM为单生物质转换提供了优越的催化平台.
- 多个活性中心对基于Sn的POM催化剂的协同效应显著增强了催化活性和选择性.
- 这种方法为从可再生生物质资源中有效和可持续地生产化学品提供了巨大的潜力.
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