Site-Specific CO2 Adsorption and Zero Thermal Expansion in an An isotropic Pore Network

被引：139

作者：

Queen, Wendy L. ^{[1
,2
]}

Brown, Craig M. ^{[1
,3
]}

Britt, David K. ^{[4
]}

Zajdel, Pawel ^{[5
]}

Hudson, Matthew R. ^{[1
,2
]}

Yaghi, Omar M. ^{[4
]}

机构：

[1] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[3] Australian Nucl Sci & Technol Org, Bragg Inst, Menai, NSW 2234, Australia

[4] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[5] Univ Silesia, Inst Phys, Div Phys Crystals, PL-40007 Katowice, Poland

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 50期

关键词：

METAL-ORGANIC FRAMEWORKS; HIGH H-2 ADSORPTION; CARBON-DIOXIDE; HYDROGEN STORAGE; HIGH-CAPACITY; GAS-ADSORPTION; SEPARATION; BINDING;

D O I：

10.1021/jp208529p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Detailed neutron powder diffraction (NPD) experiments were carried out on the parent and CO2 adsorbed Mg-MOF-74 (MOF: metal-organic framework). Data collected at low temperature revealed two CO2 adsorption sites on the pore surface and multiple changes in the framework as a function of CO2 loading. Upon heating the samples to room temperature, the data revealed minimal changes in expansivity upon adsorption of up to 0.94 CO2/Mg (approximate to 25% mass fraction). Further, temperature-dependent data collected on the bare framework reveals net zero thermal expansion between 10 and 475 K.

引用

页码：24915 / 24919

页数：5

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