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来自泥炭的ZnCl2活性超微孔碳材料用于吸附

Egert Möller¹, Rasmus Palm^1,2, Kenneth Tuul¹

¹Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia.

Nanomaterials (Basel, Switzerland)

|November 10, 2023

概括

具有低化物比率的可持续泥炭活性炭显示出高吸附能力. 这些超微孔材料在低压和低温度下有效地储存气.

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.
可持续能源可持续能源

背景情况:

微孔吸附剂对于高效的储存至关重要.
来自可再生能源的可持续活性碳材料非常受欢迎.
泥炭是一种可行的有机前体,用于碳材料合成.

研究的目的:

为了合成和描述用于吸附的来自泥炭的微孔碳.
为了研究化激活对孔隙结构和吸收的影响.
评估这些材料在低压储存方面的潜力.

主要方法:

使用不同比例的化 (ZnCl2) 来化学激活泥炭.
合成六种来自泥炭的碳材料.
在冷温度下测量气体吸附量 (N2,CO2,H2).
分析使用2D-NLDFT-HS模型来确定孔隙结构.

主要成果:

以低ZnCl2比率激活的泥炭衍生碳呈现出高超微孔性 (>99%微孔性).
在973 K的1:2 ZnCl2与泥炭比率下合成的材料显示出高表面积 (1260 m2 g-1).
这些碳在1bar和77K时吸附高达最大H2容量的83%.

结论:

低度的ZnCl2是有效的合成高度超微的碳从泥炭.
这些材料具有最佳的孔状特性,可有效地在低压下吸附气.
来自泥炭的活性炭为存应用提供了一个有希望的可持续途径.

关键词:

储存的储存的储存.微孔碳材料是一种微孔碳材料.金属化物激活的作用

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