Related Experiment Video
Updated: Aug 17, 2026

Methane Hydrate Crystallization on Sessile Water Droplets
Published on: May 26, 2021
Self-diffusion of molecular hydrogen in clathrasils compared: dodecasil 3C versus sodalite
A W C van den Berg1, E Flikkema, J C Jansen
1Ceramic Membrane Centre The Pore, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands.
Abstract:
The self-diffusion coefficient of molecular hydrogen through the all-silica microporous dodecasil 3C structure is calculated by means of molecular-dynamics (MD) calculations, allowing for full framework flexibility, in order to assess the material's feasibility as a hydrogen storage medium. The hydrogen uptake rate into dodecasil 3C is compared to that previously calculated for sodalite and it is found that the latter performs significantly better. The reason for this variation in performance is found to lie in intrinsic topological differences between each framework type. This is explicitly demonstrated by means of a simplified version of transition state theory helping to succinctly rationalize the MD data.
Related Concept Videos
Entropy and Solvation
Molecular Shape and Polarity
Intermolecular Forces
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
Stability of Conjugated Dienes
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
Solubility
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...

