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Updated: May 6, 2026
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Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale
Published on: August 2, 2018
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Methane storage capabilities of diamond analogues
Maciej Haranczyk1, Li-Chiang Lin, Kyuho Lee
1Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 50F-1650, Berkeley, CA 94720-8139, USA. mharanczyk@lbl.gov.
Physical Chemistry Chemical Physics : PCCP
|November 9, 2013
Summary
Researchers explored diamond analogue materials for methane storage, finding an all-carbon structure offers high uptake but poor diffusion. Silicon and germanium alternatives provide faster diffusion but lower methane adsorption.
Area of Science:
- Materials Science
- Chemical Engineering
- Computational Chemistry
Background:
- Methane is a promising alternative fuel for vehicles.
- Efficient methane storage is crucial for its widespread adoption.
- Porous materials are key for adsorption-based methane storage.
Purpose of the Study:
- To identify novel porous materials for methane storage.
- To investigate diamond analogue structures for vehicular methane applications.
- To evaluate adsorptive and diffusive properties of methane in these materials.
Main Methods:
- Density functional theory (DFT) was used to investigate material structures.
- Structures included all-carbon, -CC-, and -BN- linked diamond analogues.
- Classical molecular simulations assessed methane adsorption and diffusion.
Main Results:
- The all-carbon diamond analogue exhibited the highest volumetric methane uptake (280 VSTP/V at 35 bar, 298 K).
- This all-carbon structure demonstrated limited methane diffusion.
- Silicon- and germanium-containing analogues showed faster diffusion but lower methane adsorption (172-179 VSTP/V).
Conclusions:
- Diamond analogue materials show potential for methane storage.
- A trade-off exists between methane uptake and diffusion rates in these materials.
- Further material design is needed to balance adsorption capacity and diffusion kinetics.
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