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通过回收宁油来减少减少催化分离的溶剂消耗
Jun Hee Jang1,2, Júlia Callejón Álvarez1,2,3, Quinn S Neuendorf1
1Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States.
ACS sustainable chemistry & engineering
|August 30, 2024
概括
这项研究探讨了使用素油作为降解催化分化 (RCF) 中的共同溶剂. 回收素油大大减少了对外部溶剂的需求,提高了生物质利用的经济和环境可行性.
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) 是一种从纤维素生物质中同时提升红素和碳水化合物的过程.
- 由于对外源性有机溶剂的需求,RCF的经济和环境可行性受到挑战.
- 作为一个潜在的共同溶剂,RCF的产品素油被提出,以减轻溶剂回收问题.
研究的目的:
- 研究RCF溶剂回收利用素油作为辅助溶剂的可行性.
- 在RCF溶剂系统中扩大宁油的度范围.
- 评估素油辅溶剂对脱效率和产品质量的影响.
主要方法:
- 在RCF的勘探中,使用不同度的金油 (高达100 wt%) 进行勘探.
- 与传统的甲醇水溶剂的脱效率的比较.
- 在十个连续的RCF反应周期中评估溶剂回收.
- 对素提取的分析,素油的特性和纤维素的保留.
主要成果:
- 含有高达80%重量%的素油的溶剂实现了高脱度 (83-93%),相当于甲醇-水混合物.
- 使用素油作为唯一的溶剂,导致67%的脱化没有水.
- 使用溶剂回收利用的连续十个RCF循环导致11%的重量最终的宁油度.
- 没有观察到对红素提取,红素油特性或纤维素保留的有害影响.
结论:
- 素油可以有效地用作RCF中的辅溶剂,大大减少对外部有机溶剂的依赖.
- 这种方法提高了RCF过程的经济和环境可持续性.
- 用素油回收溶剂是一种可行的策略,可以提高生物质利用的整体效率.
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