High-enthalpy hydrogen adsorption in cation-exchanged variants of the microporous metal-organic framework Mn3[(Mn4Cl)3(BTT)8(CH3OH)10]2

被引：452

作者：

Dinca, Mircea ^{[1
]}

Long, Jeffrey R. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 36期

关键词：

D O I：

10.1021/ja072871f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Exchange of the guest Mn2+ ions in Mn-3[(Mn4Cl)(3)(BTT)(8)(CH3OH)(10)](2) (1-Mn2+; BTT = 1,3,5-benzenetristetrazolate) with selected cations results in the formation of isostructural framework compounds 1-M (M = Li+, Cu+, Fe (2+), CO2+, Ni2+, CU2+, Zn2+). Similar to the parent compound, the new microporous materials are stable to desolvation and exhibit a high H-2 storage capacity, ranging from 2.00 to 2.29 wt % at 77 K and 900 torr. Measurements of the isosteric heat of adsorption at zero coverage reveal a difference of 2 kJ/mol between the weakest and strongest H-2-binding materials, which is attributed to variations in the strength of interaction between H-2 molecules and unsaturated metal centers within each framework. The Co2+-exchanged compound-CO2+, exhibits an initial enthalpy of adsorption of 10.5 kJ/mol, the highest yet observed for a microporous metal-organic framework.

引用

页码：11172 / 11176

页数：5

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