从d-Galactose获得生物基化学品:使用水/MIBK系统与HCl/AlCl催化剂3结合使用5-氧甲基二醇的有效途径
Angela Martina1,2, Henk H van de Bovenkamp2, Jozef G M Winkelman2
1Department of Chemical Engineering, Parahyangan Catholic University, Ciumbuleuit 94, Bandung 40141, Indonesia.
ACS omega
|October 7, 2024
概括
这项研究使用双相系统从d-银糖中增强了5-基甲基 (HMF) 的产生. 与传统方法相比,一种新的HCl/AlCl3催化剂系统实现了明显更高的HMF产量.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 绿色化学 绿色化学
- 生物质转换生物质转换
背景情况:
- 5-氧甲基 (HMF) 是一种重要的生物基化学中间体.
- 像d-果糖这样的酶能高效地产生HMF,但像d-葡萄糖这样的酶的产量很低.
- D-银糖 (GAL) 是HMF合成的未充分利用的阿尔多原料.
研究的目的:
- 用双相水/MIBK系统研究从d-银糖 (GAL) 中合成HMF.
- 探索HCl和AlCl3在GAL转化为HMF中的催化作用.
- 为了优化反应条件并了解潜在的反应机制.
主要方法:
- 使用具有不同温度,催化剂度和GAL度的批量反应器系统进行实验研究.
- 使用双相液体-液体系统 (水/MIBK) 使用HCl/AlCl3催化剂.
- 动力和统计建模用于分析实验数据和反应路径.
主要成果:
- 在优化条件下 (135°C,90分钟) 从GAL获得49mol%的最大HMF产量.
- 与单相水系统 (2% HMF) 相比,显示出明显更高的产量.
- 确定了由AlCl3催化为TAG的TAG同质化为TAgatose (TAG) 作为关键的初始步骤,其次是TAG通过HCl转化为HMF.
结论:
- 使用HCl/AlCl3的双相系统对于从d-银糖中生产HMF非常有效.
- 温度是影响HMF产量的最关键参数.
- 拟议的催化机制涉及异构化和随后的转化,为生物基HMF合成提供了一个有前途的途径.
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