Methane-Induced Deformation of Porous Carbons: From Normal to High-Pressure Operating Conditions
MetadataShow full item record
Applying developed recently thermodynamic model of adsorption-induced deformation of microporous carbons (Kowalczyk, P.; Ciach, A.; Neimark, A. Langmuir 2008, 24, 6603), we study the deformation of carbonaceous porous materials due to adsorption of methane at 313 K andpressures up to 19 MPa. The internal adsorption stress induced by adsorbed/compressed methane is very high in the smallest micropores (for instance, adsorption stress in 0.315 nm ultra-micropore reaches 1.8 GPa at 19 MPa). Model calculations show that depending on pore structure both monotonic (i.e.,expansion) and nonmonotonic (i.e., initial contraction and further expansion) methane stress-strain isotherm are theoretically predicted. Our calculations reproduce quantitatively the methane stress-strain isotherm on carbide-derived activated carbon at 313 K and experimental pressures up to 5.9 MPa. Moreover, we extrapolate methane stress-strain isotherm measured by the dilatometric method up to 19 MPa to mimic high pressure operating conditions. We predict that expansion of the studied carbon sample reaches 0.3% of volume at 19 MPa and 313 K. From our extrapolation of experimental dilatometric deformation data to high pressure conditions, we predict that the reduction of pressure from 19 to 1 MPa is accompanied by shrinkage of carbon sample by about 0.28% of volume. Comparison with recent study due to Yang et al. (Yang, K.; Lu, X.; Lin, Y.; Neimark, A. V. Energy Fuels 2010, 24, 5955-5964) shows that studied activated carbon is more resistant to adsorption stress than various coal samples. Presented study can be useful for optimization of operating conditions used in methane gas-extraction technologies.
Showing items related by title, author, creator and subject.
Kowalczyk, Piotr; Furmaniak, S.; Gauden, P.; Terzyk, A. (2010)Applying the thermodynamic model of adsorption-induced deformation of microporous carbons developed recently (Kowalczyk, P.; Ciach, A.; Neimark, A. Langmuir 2008, 24, 6603), we study the deformation of carbonaceous amorphous ...
Zou, J.; Rezaee, M. Reza; Liu, K. (2017)© 2017 American Chemical Society. Methane adsorption isotherms on shale were investigated at 25, 45, 60, and 80 °C with pressure up to 7 MPa (1015 psi). A total of six shale samples with low total organic carbon (TOC) ...
Chamani, A.; Rasouli, Vamegh (2011)Coalbed methane (CBM) drew increasingly the attention as an unconventional source of natural gas during the last decades, globally and domestically. In spite of the fact that it is one of the main hazardous concerns in ...