Abstract
Excess CH4 adsorption isotherms on silica aerogel (SA), two resorcinol-formaldehyde aerogels (RFAs) and carbon aerogel (CA) were measured in the temperature range of 298–318K and pressures up to 12MPa. Absolute adsorption isotherms were calculated from experimental excess adsorption isotherms using pore volume of each adsorbent. RFA-17 had maximum absolute CH4 uptake of 22mmol/g at 298K and 10MPa. Adsorption isotherms for all aerogels were well represented with the Freundlich model in the pressure range of the experiments. Excess CH4 uptake was significantly affected by the micropore surface area in aerogels. The isosteric heat of adsorption for each aerogel was found to be dependent on the surface coverage. Among all aerogels, RFA-10 had the highest heat of CH4 adsorption. Adsorption capacities of aerogels were comparable with other classes of adsorbents, which calls for further investigations for development of aerogels as materials for methane storage.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
