气体-固体相互作用影响纳米粒子材料中的导热
Mingyang Yang1,2, Bo Yang1, Yu Xu3
1School of Resources Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, China.
Langmuir : the ACS journal of surfaces and colloids
|February 6, 2026
概括
纳米孔状材料在吸附天然气 (ANG) 储存方面表现有前途. 这项研究使用多尺度模拟量化了气体-固体合效应,揭示了影响热传递和甲吸附的不同压力模式.
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.
- 热力学是一种热力学.
背景情况:
- 纳米孔状材料具有较高的表面积和较低的导热率,使它们适合吸附天然气 (ANG) 储存.
- 在不同温度和压力下精确量化气体-固体合对于优化ANG储存至关重要,但传统模型面临局限性.
研究的目的:
- 开发一种多尺度的方法来量化气体-固体合效应,用于NG储存的纳米孔状材料.
- 改进吸附模型并确定气体-固体合面积的相关性.
- 在含甲的多孔介质中创建有效导热率的预测模型.
主要方法:
- 利用纳米级的分子动力学 (MD) 模拟来分析甲吸附,热导率和气体-固体合.
- 开发了一种精细的朗穆尔吸附模型和气体-固体合面积的定量相关性.
- 构建了一个宏观的有效导热模型,其中包含了气体-固体合效应.
主要成果:
- MD模拟提供了关于甲吸附能力,有效导热率和气体-固体合受温度和压力影响的定量数据.
- 确定了不同的压力模式:低压 (<2.1 × 10^5 Pa) 主要由固体传热,高压 (>2.1 × 10^5 Pa) 气体-固体相互作用显著增加.
- 建立了气体-固体合面积的定量相关性和有效导热率的预测模型.
结论:
- 多尺度方法准确地量化了NG存储纳米孔质材料中的气体-固体合效应.
- 气体-固体合显著影响热导率和吸附,其重要性与压力明显不同.
- 这些发现为设计先进的ANG存储系统提供了基础,通过优化材料特性和操作条件.
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