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通过精确的酸调和时间窗口识别,快速的还原性催化分化用于整体价值化的树脂纤维素
Peidong Li1,2, Wangyue Xie1,2, Muhammad Fayyaz Farid1,2
1School of Energy Science and Engineering, University of Science and Technology of China Hefei 230026 China cuiyb@ms.giec.ac.cn.
RSC advances
|November 13, 2025
概括
这项研究加快了降解催化分化 (RCF) 用于使用酸在乙醇水中的酸去聚合. 在优化的条件下,在30分钟内产生43%的芳香单体,从而实现有效的生物质价值化.
科学领域:
- 生物质的价值化 生物质的价值化
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
背景情况:
- 降解催化分化 (RCF) 将素脱聚合成有价值的芳香单体.
- 传统的RCF需要很长的反应时间 (>3小时),由于动力学缓慢,阻碍了工业可扩展性.
- 有效的氨酸脱聚合和纤维素保存是利用氨酸纤维素生物质的关键.
研究的目的:
- 通过系统地调查溶剂成分,酸度和反应参数,加速RCF动力学并提高单体产量.
- 开发一种快速可扩展的RCF工艺,以高效地提升木质素的价值.
- 整合RCF与下游加工,以实现整体生物质利用.
主要方法:
- 系统地调查溶剂成分 (乙醇-水) 和酸度.
- 使用Ni/C催化剂在目标温度 (0小时) 的快速基准反应.
- 时间过程分析,以优化反应时间和酸度,以获得单体产量和碳水化合物保存.
主要成果:
- 在乙醇水中使用酸辅助的RCF实现了高效的素脱聚合.
- 优化的酸度在0小时内产生了31%的芳香单体,生产效率为3.44 mg/g/min.
- 在优化条件下 (0.3重量‰ H3PO4),在30分钟内获得43%的芳香单体产量.
- 将富含纤维素的残留物综合转化为乙烯糖醇 (35%的产量).
结论:
- 建立了一个快速的RCF范式,显著加速了氨酸脱聚合动力学.
- 精确的酸调和时间控制对于最大限度地提高单体产量和保存碳水化合物至关重要.
- 综合工艺使得素和纤维素的有效,同时利用,促进催化剂回收和再利用可扩展的素纤维素生物质利用.
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