在可持续的碳催化剂上,近100%的热解糖选择性水解使生物乙醇的高效生产成为可能
Hong-Li Ma1, Ming-Fu Li2, Ying-Chuan Zhang3
1Guangdong Engineering Laboratory of Biomass High-value Utilization, Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510316, PR China; Biomass Group, College of Engineering, Nanjing Agricultural University, Nanjing 210031, PR China.
Bioresource technology
|July 19, 2025
概括
硫化碳催化剂有效地从生物质热解油中化 (LG) 转化为葡萄糖. 这些可持续的催化剂实现了高产量,并使有效的生物乙醇生产成为可能,为生物燃料合成提供了更绿色的替代方案.
科学领域:
- 生物质的转化和催化.
- 可持续发展的化学和绿色工程.
- 生物燃料和生物化学品生产
背景情况:
- 莱沃格卢可桑 (LG) 是生物质热解油中提取的关键成分,对于下游应用需要高效的水解.
- 弥合生物质热解和发酵需要有效的LG转化方法.
- 目前用于LG水解的方法经常面临选择性和催化剂稳定性的挑战.
研究的目的:
- 开发和评估硫化碳催化剂 (SCC) 用于稳定地水解莱夫糖 (LG).
- 为了从LG水解中获得高选择性的葡萄糖生产.
- 在重复的催化循环中评估SCC的稳定性和可重复使用性.
主要方法:
- 一系列硫碳催化剂 (SCC) 的合成和表征.
- 使用SCCs对LG水解动力学和产品选择性的研究.
- 通过多个批次反应周期分析催化剂稳定性.
- 使用飞行时间质谱学和理论计算,阐明水解机制.
- 用于生物乙醇生产的SCC催化水解剂的发酵.
主要成果:
- SCCs在LG水解中表现出优异的葡萄糖生产选择性,最大限度地减少了像5-hydroxymethylfurfural.furfural这样的不必要的副产品.
- 在四个反应周期中保持了高的LG转化率 (95%) 和葡萄糖产量 (90%).
- 机制研究揭示了硫酸盐组的质子激活,通过CO键裂解和水化促进了LG水解.
- 从SCC催化水解盐中获得大约99%的生物乙醇产量,超过了传统的水酸水解.
结论:
- 硫化碳催化剂为生物质热解油的升级提供了一种可持续且高效的替代传统异质催化剂.
- 开发的SCC为高效的葡萄糖生产提供了一个强大的平台,这对于生物燃料和生物化学品的合成至关重要.
- 这种方法通过提高生物燃料和生物化学制造工艺的效率和可持续性,有助于实现净零生产目标.
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