Analysis of the Adsorption Characteristics of Hydrogen Molecules on Activated Carbon

郑青榕 1; 顾安忠 2; 蔡振雄 1; 陈武 1; 廖海峰 1; 郑超瑜 1

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Analysis of the Adsorption Characteristics of Hydrogen Molecules on Activated Carbon

更新时间：2025-12-08

- Analysis of the Adsorption Characteristics of Hydrogen Molecules on Activated Carbon
- Vol. 42, Issue 4, Pages: 505-508(2008)
- 作者机构：
  
  集美大学轮机工程学院,厦门,361021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK91;O647
- Online First：10 April 2008，
  
  Published：2008
- 稿件说明：
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郑青榕 1, 顾安忠 2, 蔡振雄 1, et al. Analysis of the Adsorption Characteristics of Hydrogen Molecules on Activated Carbon[J]. 2008, 42(4): 505-508.
DOI：

郑青榕 1, 顾安忠 2, 蔡振雄 1, et al. Analysis of the Adsorption Characteristics of Hydrogen Molecules on Activated Carbon[J]. 2008, 42(4): 505-508. DOI：

摘要

以探寻氢在碳基材料上适宜的存储条件为目的

在温度区间113～293 K、压力范围0～13 MPa测定氢在活性炭LY-1上的平衡吸附数据

应用格子理论导出的通用吸附等温方程

通过吸附平衡态的能量分析、等温方程的线性标绘以及10-4-3吸附势函数的迭代求解

确定氢分子在吸附表面的最大密度、受到的壁面吸附势以及氢分子间作用能.研究结果表明:氢分子在吸附空间以压缩气体的状态聚集

温度和表面遮盖率对氢分子吸附行为的影响明显; 温度升高将使氢分子间作用能受压力和表面遮盖率变化的影响加剧; 较高的表面遮盖率也使吸附氢分子间作用能随温度、压力以更高的速率变化; 改善材料结构和降低储存系统温度可提高碳基材料的储氢性能.

Abstract

For finding the optimum conditions for hydrogen storage by adsorption on carbon based materials

adsorption data of hydrogen on the activated carbon LY-1 were measured at equilibrium pressure-temperatures from 0.1 MPa to 13 MPa and 113 K to 293 K. Lattice theorywas employed to derive an adsorption model. Energy balance of the adsorption equilibrium state

the linear plot of the model and the iteration of the 10-4-3 potential model were respectively carried out to determine the maximum surface concentration

the adsorption potential and the interaction energy among adsorbed hydrogen molecules. Results show that adsorbed hydrogen molecules are in a state of the compressed gas

and that the temperature of the storage system and the surface coverage are two obvious factors influencing the behavior of adsorbed hydrogen molecules. The interaction energy among hydrogen molecules varies more drastically with changes in both the pressure and the surface coverage under a higher temperature

and a higher surface coverage results in a higher increasing rate of the molecular interaction energy with the temperature and the pressure. Conclusions are drawn that the construction of the carbon based materials for hydrogen storage should be improved and that the temperature of the hydrogen storage system needs to be lowered for increasing the total adsorption amount.

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references

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