Experimental evidence supported by simulations of a very high H2 diffusion in metal organic framework materials

被引：83

作者：

Salles, F. ^{[1
]}

Jobic, H. ^{[2
]}

Maurin, G. ^{[1
]}

Koza, M. M. ^{[3
]}

Llewellyn, P. L. ^{[4
,5
,6
]}

Devic, T. ^{[7
]}

Serre, C. ^{[7
]}

Ferey, G. ^{[7
]}

机构：

[1] Univ Montpellier 2, ENSCM, Inst Charles Gerhardt Montpellier, CNRS,UMR 5253, F-34095 Montpellier 05, France

[2] Univ Lyon, CNRS, Inst Rech Catalyse & Environm LYON, F-69626 Villeurbanne, France

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[4] Univ Aix Marseille 1, Lab Chim prov, CNRS, Ctr St Jerome,UMR 6264, F-13397 Marseille, France

[5] Univ Aix Marseille 2, Lab Chim prov, CNRS, Ctr St Jerome,UMR 6264, F-13397 Marseille, France

[6] Univ Aix Marseille 3, Lab Chim prov, CNRS, Ctr St Jerome,UMR 6264, F-13397 Marseille, France

[7] Univ Versailles, CNRS, Inst Lavoisier, UMR 8180, F-78035 Versailles, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.100.245901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quasielastic neutron scattering measurements are combined with molecular dynamics simulations to extract the self-diffusion coefficient of hydrogen in the metal organic frameworks MIL-47(V) and MIL-53(Cr). We find that the diffusivity of hydrogen at low loading is about 2 orders of magnitude higher than in zeolites. Such a high mobility has never been experimentally observed before in any nanoporous materials, although it was predicted in carbon nanotubes. Either 1D or 3D diffusion mechanisms are elucidated depending on the chemical features of the MIL framework.

引用

页数：4

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