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绿色溶剂可提高炭质量,并澄清二次炭的影响
Giulia Ischia1, Jillian L Goldfarb2, Antonio Miotello3
1Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy; Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
Bioresource technology
|September 8, 2023
概括
通过水热碳化 (HTC) 制造的炭的溶剂提取通过去除挥发性化合物来提高其质量. 这个过程增强了固态阶段,以获得更好的热稳定性和潜在的应用.
科学领域:
- 生物质的转化和利用.
- 绿色化学和可持续的过程.
- 材料科学与工程 材料科学与工程
背景情况:
- 工业规模的热水碳化 (HTC) 面临着由于碳水化合物质量限制的挑战.
- 增强碳化合物的特性对于扩大其应用范围至关重要.
- 溶剂提取提供了一个潜在的途径来升级水电.
研究的目的:
- 调查溶剂提取在提高碳素质量的有效性.
- 分析提取分量的化学成分和剩余的固体相.
- 评估提取对碳化合物的热性能和潜在应用的影响.
主要方法:
- 通过HTC在190,220和250°C的温度下从纤维素中生产碳水化合物.
- 使用绿色极性溶剂提取碳化合物:乙烯酸乙烯,乙和甲醇.
- 可提取分数和不可提取的固体相的表征,包括热分析.
主要成果:
- 可提取的部分含有碳酸和衍生物,类似于HTC液.
- 非可提取的固体相表现出由于去除挥发性化合物而改善的热谱.
- 碳微球仍然不受溶剂提取过程的影响.
- 溶剂洗有效地去除了在碳表面上吸附的挥发性有机物种.
结论:
- 溶剂提取是一种可行的方法,可以从HTC中提升碳素质量.
- 该过程通过去除挥发性杂质,提高了碳化合物的热稳定性.
- 这一净化步骤扩大了炭在各种领域的潜在应用.
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