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冷温直接空气 CO2 捕获与氨基载荷金属有机框架单立体

Yuxiang Wang¹, Guanhe Rim¹, MinGyu Song¹

¹School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr., Atlanta, Georgia 30332, United States.

ACS applied materials & interfaces

|December 18, 2023

概括

研究人员开发了3D打印的吸附单体,使用纤维素酸盐和诸如氧化物13X之类的材料,用于直接空气捕获 (DAC) CO2. 这些结构显示出有效的二氧化碳吸收,即使在低温下,也表明了碳捕获技术的有希望的方法.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

直接捕获二氧化碳 (DAC) 对于减缓气候变化至关重要.
现有的DAC吸附剂 (热质,MOF) 往往受其粉末形式的限制,阻碍了实际应用.
在寒冷的环境条件下对DAC性能存在有限的研究.

研究的目的:

使用3D打印制造DAC的吸附单体.
评估这些单体岩石的二氧化碳捕获性能,特别是在寒冷条件下.
展示基于溶液的增材制造 (SBAM) 的多功能性,用于创建结构化吸附材料.

主要方法:

利用基于溶液的增材制造 (SBAM),一种3D打印技术.
制造的纤维素酸 (CA) 单体,其中包含焦化物13X和MOF MIL-101 (Cr) 颗粒.
装载的分支聚乙烯胺 (PEI) 进入CA/MIL-101 (Cr) 单体中,以提高二氧化碳的吸收.

主要成果:

成功地制造了相互透的巨孔单体,具有均分布的吸附剂颗粒.
在-20°C达到显著的二氧化碳吸收 (1.05 mmol g-monolith-1),在PEI装载的单体石中达到400ppm的二氧化碳.
在14个周期中,经过中度再生 (60°C) 证明了稳定的工作能力 (0.95 mmol g-monolith-1).
报告的动态CO2吸收能力在25°C时为0.60 mmolg-monolith-1 ,在潮湿条件下在-20°C时高达1.43 mmolg-monolith-1.

结论:

SBAM是一种多功能技术,用于制造具有各种颗粒类型和大小的DAC吸附剂单体.
开发的单体石在各种温度范围内表现出有希望的二氧化碳捕获性能,包括环境下条件.
这种方法为DAC和其他化学分离提供了一个可行的途径,用于创建高效的吸附接触器.

关键词:

通过3D打印打印3D打印.碳捕获碳捕获碳捕获直接捕获空气,可以直接捕获空气.金属-有机的框架.环境下的环境条件.

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