纳米多孔材料的表征。

IF 7.6 2区 工程技术 Q1 CHEMISTRY, APPLIED
M Thommes, C Schlumberger
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引用次数: 20

摘要

详细分析纳米多孔材料的结构特性,例如孔径和连通性,对于确定这些特性与气体储存、分离和催化过程性能之间的相关性至关重要。在开发具有均匀、定制孔结构的纳米多孔材料方面取得的进展,包括引入分层孔系统,为这些应用提供了巨大的潜力。在此背景下,在理解受限流体的吸附和相行为以及物理吸附表征方面取得了重大进展。利用先进的高分辨率实验协议,结合基于统计力学的先进方法(如基于密度泛函理论和分子模拟的方法),可以实现可靠的孔径、体积和网络连通性分析。如果存在大孔隙,则吸附法和汞孔隙测定法的结合是有用的。因此,本文讨论了近年来在了解汞侵入/挤压机制方面的一些重要进展。此外,介绍了一些有前途的互补技术,用于表征浸泡在液相中的多孔材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization of Nanoporous Materials.

Detailed analysis of textural properties, e.g., pore size and connectivity, of nanoporous materials is essential to identify correlations of these properties with the performance of gas storage, separation, and catalysis processes. The advances in developing nanoporous materials with uniform, tailor-made pore structures, including the introduction of hierarchical pore systems, offer huge potential for these applications. Within this context, major progress has been made in understanding the adsorption and phase behavior of confined fluids and consequently in physisorption characterization. This enables reliable pore size, volume, and network connectivity analysis using advanced, high-resolution experimental protocols coupled with advanced methods based on statistical mechanics, such as methods based on density functional theory and molecular simulation. If macro-pores are present, a combination of adsorption and mercury porosimetry can be useful. Hence, some important recent advances in understanding the mercury intrusion/extrusion mechanism are discussed. Additionally, some promising complementary techniques for characterization of porous materials immersed in a liquid phase are introduced.

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来源期刊
Annual review of chemical and biomolecular engineering
Annual review of chemical and biomolecular engineering CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
16.00
自引率
0.00%
发文量
25
期刊介绍: The Annual Review of Chemical and Biomolecular Engineering aims to provide a perspective on the broad field of chemical (and related) engineering. The journal draws from disciplines as diverse as biology, physics, and engineering, with development of chemical products and processes as the unifying theme.
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