固体支上的多功能特定任务的离子液体:作为布伦斯特催化剂和固体溶剂的双重功能,用于从果糖生产HMF
Julian E Sanchez-Velandia1, Raúl Porcar2, Ivan Muñoz1
1Department of Inorganic and Organic Chemistry, Universitat Jaume I, Av. Vicent Sos Baynat, s/n, 12006, Castelló de la Plana, Castelló, Spain.
ChemSusChem
|August 9, 2025
概括
支持的离子液体聚合物 (SILP) 与硫和二甲基硫氧化物单位有效地将果糖转化为5-基甲基 (HMF). 这种双功能的催化剂具有很高的选择性,可回收性和克尺度生产,优于传统方法.
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.
- 生物质的价值化 生物质的价值化
背景情况:
- 开发高效的异质催化剂用于生物质转化对于可持续的化学生产至关重要.
- 支持的离子液体聚合物 (SILP) 为催化应用提供可调节的特性.
- 果糖脱水为5-基甲基 (HMF) 是生物质价值化的一个关键步骤.
研究的目的:
- 合成和评估新型双功能SILP,其中包含硫和二甲基硫氧化物单位,用于生物质衍生糖的价值化.
- 研究硫和二甲基硫氧化物组对催化性能的协同作用.
- 探索这些SILP在果糖和葡萄糖转化中用于HMF和氨酸合成的应用.
主要方法:
- 支持硫和二甲基硫氧化物功能的离子液态聚合物 (SILP) 的合成.
- 用SILP对果糖脱水到HMF在克拉尺度上的催化测试.
- 优化硫与二甲基硫氧化物比率,以提高选择性.
- 评估催化剂在双相系统中的可回收性和性能,以及使用深度环氧溶剂.
- 密度函数理论 (DFT) 计算以阐明反应机制.
主要成果:
- 成功合成了包含硫和二甲基硫氧化物单元的新型SILP.
- 催化剂在克级果糖脱水到HMF的过程中表现出了显著的效率.
- 确定了硫与二甲基硫氧化物组的最佳比例,这对于高反应选择性至关重要.
- 在效率和可回收性方面,SILP的性能优于同质酸催化剂 (例如,HCl).
- 该系统在使用深溶解剂和在将葡萄糖转化为HMF或酸的活性方面表现出高性能.
结论:
- 具有硫和二甲基硫氧化物组的双功能SILP是生物质利用的有效异质催化剂.
- 功能组和布伦斯特德酸部位之间的协同相互作用,在二甲基硫氧化物的帮助下,增强了HMF的产生.
- 这些SILP为HMF合成提供了对同质催化剂的可持续和可回收替代品.
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