Diffusion of CH4 in ZIF-8 Studied by Quasi-Elastic Neutron Scattering | Sciact - CRIS-system of Boreskov Institute of Catalysis

Diffusion of CH4 in ZIF-8 Studied by Quasi-Elastic Neutron Scattering Full article

Journal

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Output data

Year: 2015, Volume: 119, Number: 28, Pages: 16115-16120 Pages count : 6 DOI: 10.1021/acs.jpcc.5b04259

Tags

Characteristic timeEffective sizeMesoscopic techniquesMolecular levelsOrganic linkersQuasielastic neutron scattering

Authors

Jobic H. ¹ , Kolokolov D.I. ^2,4 , Stepanov A.G. ^2,4 , Koza M.M. ³ , Ollivier J. ³

Affiliations

1	Institut de Recherches sur la Catalyse et l’Environnement de Lyon, CNRS, Universitéde Lyon 1, 2 Av. A. Einstein, 69626 Villeurbanne, France
2	Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
3	Institut Laue Langevin, BP 156, 38042 Grenoble, France
4	Faculty of Natural Sciences, Department of Physical Chemistry, Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090, Russia

Funding (1)

Federal Agency for Scientific Organizations

V.44.1.16.

Quasi-elastic neutron scattering (QENS) measurements have been performed to characterize at the molecular level the diffusion of CH4 adsorbed at various concentrations in ZIF-8. This allows to compare for the first time diffusivities obtained in a MOF by microscopic and mesoscopic techniques. The good agreement which is observed between the different methods shows that there are no defects obstructing diffusion, which is often the case in zeolites. Even if the effective size of ZIF-8 windows is larger than the diameter derived from crystallography, the characteristic time for intercage diffusion (∼ns) is much longer than the time between jumps within a cage (∼10 ps), indicating that the organic linkers severely hinder molecule passage.

Jobic H. , Kolokolov D.I. , Stepanov A.G. , Koza M.M. , Ollivier J.
Diffusion of CH4 in ZIF-8 Studied by Quasi-Elastic Neutron Scattering
The Journal of Physical Chemistry C. 2015. V.119. N28. P.16115-16120. DOI: 10.1021/acs.jpcc.5b04259 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	May 4, 2015
Published online:	Jul 2, 2015
Published print:	Jul 16, 2015

Web of science:	WOS:000358337700037
Scopus:	2-s2.0-84937108845
Elibrary:	23990630
Chemical Abstracts:	2015:1061527
Chemical Abstracts (print):	163:165379
OpenAlex:	W2512550757

DB	Citing
Web of science	31
Scopus	31
Elibrary	30
OpenAlex	30