CO2 吸附于从玉木棒中获得的孔工程碳素
Aamir Hanif1, Md Abdul Aziz1, Aasif Helal1
1Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
Chemistry, an Asian journal
|July 17, 2023
概括
朱特衍生碳有效捕获二氧化碳 (CO2),具有高容量和选择性. 这种可持续吸附剂在工业应用中显示出高效的二氧化碳分离的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 碳捕获对于缓解全球变暖至关重要.
- 基于吸附的方法为二氧化碳捕获提供了清洁和节能的方法.
- 吸附剂的性能高度依赖于材料的设计和性能.
研究的目的:
- 为了研究木质衍生碳作为高性能吸收剂,用于二氧化碳捕获.
- 为了优化日衍生碳的合成,以提高二氧化碳吸附率.
- 评估这些材料在实际二氧化碳分离过程中的潜力.
主要方法:
- 在500-700°C的温度下,用二碳酸 (NaHCO3) 烧化木棒,以产生碳吸附剂.
- 通过控制毛孔尺寸分布和表面功能来调整吸附性质.
- 材料的特征是使用XRD,FTIR,拉曼,FESEM和N2吸附在77K.
- 测量了二氧化碳吸附异热体以确定容量和选择性.
主要成果:
- 朱特衍生碳具有很高的二氧化碳吸附能力,最高可达2.5mmol·g-1.1.
- 实现了优异的CO2/N2选择性,达到54个.
- 优化毛孔结构和表面化学是性能的关键.
- 对真空摇摆吸附的工作能力和可再生性进行了评估.
结论:
- 朱特衍生碳是一种有希望的,可持续的材料,用于有效的二氧化碳捕获.
- 量身定制毛孔大小和表面功能显著提高了吸附剂的性能.
- 这种方法为设计用于气体分离应用的先进吸附剂提供了可行的途径.
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