Characterization of metal-organic frameworks by water adsorption

被引：938

作者：

Kuesgens, Pia ^{[2
]}

Rose, Marcus ^{[1
]}

Senkovska, Irena ^{[1
]}

Froede, Heidrun ^{[1
]}

Henschel, Antje ^{[1
]}

Siegle, Sven ^{[2
]}

Kaskel, Stefan ^{[1
]}

机构：

[1] Tech Univ Dresden, Dept Inorgan Chem, D-01069 Dresden, Germany

[2] Mahle Filtersyst GmbH, D-70376 Stuttgart, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2009年 / 120卷 / 03期

关键词：

Metal-organic framework; Water adsorption; Heat of adsorption; Pore volume; Bridging effect; ZEOLITIC IMIDAZOLATE FRAMEWORKS; CATALYTIC-PROPERTIES; THERMAL-STABILITY; HYDROGEN STORAGE; BUILDING-BLOCKS; CARBON-DIOXIDE; HIGH-CAPACITY; DESIGN; CARBOXYLATE; SEPARATION;

D O I：

10.1016/j.micromeso.2008.11.020

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The water physisorption properties and the water stability of the metal-organic frameworks HKUST-1 (=(Cu-3(BTC)(2)) (BTC benzene-1.3,5-tricarboxylate)), ZIF-8, MIL-101, MIL-100(Fe) and DUT-4 (=Al(OH)(NDC)) (NDC naphthalene-2,6-dicarboxylate) were studied. The water physisorption isotherms were compared to nitrogen physisorption isotherms and the chemical stability after water adsorption was investigated. Water adsorption does not only provide information about specific surface area, pore size and pore volume, but can also be used to estimate hydrophobicity and stability towards moisture. Both HKUST-1 and DUT-4 turned out to be unstable in direct contact with water, whereas the MIL-materials and ZIF-8 do show stability. The highest water adsorption affinity was observed for HKUST-1. Even though unstable in liquid water, for applications in trace water removal or molecular sensing HKUST-1 is a promising material. ZIF-8 is highly inert but hydrophobic. The MIL-materials are both likely candidates for water adsorption applications, but higher concentrations of the adsorbate are needed to attain an effective adsorption. DUT-4 shows insufficient adsorption capacity, but stability at ambient conditions is given. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：325 / 330

页数：6

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