利格宁分子重量对活性炭孔隙结构的作用
Chengjun Wu1, Junhuan Ding1, Graham W Tindall1
1Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC 29634, USA.
Molecules (Basel, Switzerland)
|August 29, 2024
概括
探索将生物燃料副产品素价值化为活性炭 (AC). 素前体中较高的分子量和较低的矿物质含量显著提高了AC表面积和吸附能力,提供了可持续的材料途径.
科学领域:
- 生物质价值化 生物质价值化
- 材料科学是一种材料科学.
- 可持续的化学可持续的化学
背景情况:
- 从基纤维素生物质生产生物燃料的数量正在增加.
- 作为生物质的主要组成部分的,需要为成本竞争力增加价值.
- 素特性变化对产品开发构成挑战.
研究的目的:
- 为了研究红素前体特性对活性炭 (AC) 特性的影响.
- 开发一种方法,从素副产品中生产高价值的AC.
- 通过控制素分子量和纯度来优化AC特性.
主要方法:
- 使用热剂 (ALPHA) 净化水性氨酸的超清性氨酸的细分,具有精细的分子量分布.
- 通过化激活,从素前体中合成活性炭 (AC).
- 关于孔隙结构和吸附能力的AC的表征.
主要成果:
- 活性炭表面积和吸附能力随着较高的木质素分子量而增加.
- 减少红素前体中的矿物质含量显著提高了AC的性能.
- 来自高分子量红素的AC实现了~1830 m2/g的表面积.
- 单步化激活导致最小的碳燃烧 (<30%).
结论:
- 控制的素前体特性,特别是分子量和纯度,对于生产高性能活性炭至关重要.
- 在活性炭中提升红素价值为利用生物燃料副产品提供了一个可持续的途径.
- 这种方法最大限度地利用了来自素的碳,与传统的热生成方法不同.
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