Start » Publications

Nanoporous glass as a model system for a consistency check of the different techniques of diffusion measurement.

Christian Chmelik, Dirk Enke, Petrik Galvosas, Oliver Gobin, Andreas Jentys, Hervé Jobic, Jörg Kärger, Cordula B Krause, Jens Kullmann, Johannes Lercher, Sergej Naumov, Douglas M Ruthven, Tobias Titze

University of Leipzig, Faculty of Physics and Earth Sciences, Leipzig, Germany.

Journal Article: ChemPhysChem (impact factor: 3.45). 03/2011; 12(6):1130-4. DOI: 10.1002/cphc.201100072

Abstract

The remarkable differences in the guest diffusivities in nanoporous materials commonly found with the application of different measuring techniques are usually ascribed to the existence of a hierarchy of transport resistances in addition to the diffusional resistance of the pore system and their differing influence due to the differing diffusion path lengths covered by the different measuring techniques. We report diffusion measurements with nanoporous glasses where the existence of such resistances could be avoided. Molecular propagation over diffusion path lengths from hundreds of nanometers up to millimeters was thus found to be controlled by a uniform mechanism, appearing in coinciding results of microscopic and macroscopic diffusion measurement.

Source: PubMed

Comments on this publication

ResearchGate members can add comments. Sign up now and post your comment!

Similar publications

Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Science & Research Jobs

View jobs

Keywords

coinciding results
 
differing diffusion path lengths
 
diffusion path lengths
 
diffusional resistance
 
macroscopic diffusion measurement
 
microscopic
 
Molecular propagation
 
nanoporous materials
 
pore system
 
remarkable differences
 
resistances
 
transport resistances
 
uniform mechanism