Selective CO2 uptake and inverse CO2/C2H2 selectivity in a dynamic bifunctional metal-organic framework

被引：119

作者：

Yang, Wenbin ^{[1
]}

Davies, Andrew J. ^{[1
]}

Lin, Xiang ^{[1
]}

Suyetin, Mikhail ^{[1
]}

Matsuda, Ryotaro ^{[2
,3
]}

Blake, Alexander J. ^{[1
]}

Wilson, Claire ^{[1
]}

Lewis, William ^{[1
]}

Parker, Julia E. ^{[4
]}

Tang, Chiu C. ^{[4
]}

George, Michael W. ^{[1
]}

Hubberstey, Peter ^{[1
]}

Kitagawa, Susumu ^{[2
,3
]}

Sakamoto, Hirotoshi ^{[2
,3
]}

Bichoutskaia, Elena ^{[1
]}

Champness, Neil R. ^{[1
]}

Yang, Sihai ^{[1
]}

Schroeder, Martin ^{[1
]}

机构：

[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

[2] Sci & Technol Agcy JST, ERATO Kitagawa Integrated Pores Project, Shimogyo Ku, Kyoto 6008815, Japan

[3] Kyoto Univ, Inst Integrated Cell Mat Sci iCeMS, Sakyo Ku, Kyoto 6068501, Japan

[4] Diamond Light Source, Didcot OX11 0DE, Oxon, England

来源：

CHEMICAL SCIENCE | 2012年 / 3卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH H-2 ADSORPTION; POLYHEDRAL FRAMEWORKS; POROUS MATERIAL; CARBON-DIOXIDE; FORCE-FIELD; SEPARATION; ACETYLENE; HYDROGEN; SORPTION; STORAGE;

D O I：

10.1039/c2sc20443f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The unique bifunctional porous metal-organic framework, [Co(HLdc)]center dot 1.5MeOH center dot dioxane, incorporates both free-standing carboxyl and pyridyl groups within its pores. Gas adsorption measurements on the desolvated framework reveal unusual selective CO2 adsorption over C2H2 and CH4 linked to a framework phase change from a narrow pore (np) to a large pore (lp) form, mediated by CO2 uptake at 195 K. This phase transition has been monitored by in situ powder X-ray diffraction and IR spectroscopy, and modelled by Grand Canonical Monte Carlo simulations revealing that the reversible np to lp transition is linked to the rotation of pyridyl rings acting as flexible "pore gates".

引用

页码：2993 / 2999

页数：7

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