Title :
Surface heterogeneity analysis of MWCNT from methane adsorption isotherms for adsorbed natural gas storage
Author :
Lee, Jae-Wook ; Kang, Hyun-Chul ; Shim, Wang-Geun ; Kim, Chan ; Suh, Soong-Hyuck ; Moon, Hee
Author_Institution :
Dept. of Environ. & Chem. Eng., Seonam Univ., Namwon
Abstract :
Adsorption equilibria of methane on multi-walled carbon nanotube (MWCNT) were measured. For comparison of the adsorption properties, two zeolites (DAY and HSZ-320) were chosen. The isotherm data were obtained using a static volumetric method at 303.15 K, 313.15 K, 323.15 K and at pressures up to 3 MPa. Experimental data of zeolites and carbon nanotube were correlated by the Sips isotherm and the hybrid Langmuir-Sips equations, respectively. Isosteric enthalpies of adsorption were calculated as a function of surface loading.
Keywords :
adsorption; carbon nanotubes; natural gas technology; adsorbed natural gas storage; adsorption equilibria; hybrid Langmuir-Sips equations; methane adsorption isotherms; multiwalled carbon nanotube; static volumetric method; surface heterogeneity analysis; surface loading; Amorphous materials; Carbon nanotubes; Chemical analysis; Chemical engineering; Equations; Fuel storage; Impurities; Moon; Natural gas; Vehicles; MWCNT; adsorption; heterogeneity; methane; natural gas storage;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0540-4
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388831
