由生物质的催化快速热解产生的生物油的热反应性
Steven M Rowland1, Rianna Martinez1, Cody J Wrasman1
1National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States.
概括
催化快速热解 (CFP) 油的稳定性在氧含量低于20%时显著增加. 在这个值以上,热反应率和粘度呈指数级增长,影响燃料生产.
科学领域:
- 生物质的热化学转换.
- 可持续的燃料和化学品生产生产
- 生物质热解和生物质提升
背景情况:
- 催化快速热解 (CFP) 产生生物原油,其性能比非催化方法有所改善.
- 在CFP油中的反应性氧化物会导致不稳定,增加粘度和分子量.
- 对于CFP油的热反应性和必要的催化升级水平的了解有限.
研究的目的:
- 为了研究CFP油的热反应性.
- 为了确定氧含量对CFP油的稳定性的影响.
- 阐明CFP石油退化的机制细节.
主要方法:
- 控制的CFP反应条件使油的氧含量变化.
- 加快的热反应性研究.
- 使用GC-MS,FT-ICRMS,GPC和粘度计进行分析.
主要成果:
- 确定了短链碳基,无水糖和素衍生物作为关键的活性物种.
- 观察到CFP油的低热反应性,含氧量<20%的CFP油.
- 热反应性,粘度和分子重量在20%以上的氧气中显著增加.
结论:
- 增强了对CFP油热反应性的机制理解.
- 对于CFP油的稳定性,确定了关键氧含量值 (<20 wt %).
- 结果为催化升级的质量规格提供信息,以稳定CFP油用于下游应用.
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