TY - GEN
T1 - Methane/water adsorption properties of synthetic imogolite nanotubes
AU - Ohashi, Fumihiko
AU - Tomura, Shinji
AU - Wada, Shin Ichiro
PY - 2005
Y1 - 2005
N2 - Aluminosilicate nanotubes (imogolite) have been synthesized from highly concentrated inorganic solutions by hydrothermal treatment. These can be converted to microporous nanofibers with a pore radius in the range of 0.3-0.6 nm referring to the results from the nitrogen adsorption isotherm. The water vapor adsorption isotherms indicated that the natural imogolite plotted a proportional isothermal curve where the amount of adsorbed water increased in proportion to P/P0: the maximum amount of adsorbed water was ca. 60 wt%. The synthetic imogolite showed a rapid increase at 0.9-0.95 range of P/P0 and achieved a maximum of ca 80 wt%, with a better methane storage property than that of the usual compressed natural gas storage. In order to obtain a high ratio of water adsorption and a large methane storage capacity, it is necessary to control the micro/meso porous structure and the hydrophilic/hydrophobic surface affinity. It is expected that the synthetic imogolite might become a multipurpose adsorbent.
AB - Aluminosilicate nanotubes (imogolite) have been synthesized from highly concentrated inorganic solutions by hydrothermal treatment. These can be converted to microporous nanofibers with a pore radius in the range of 0.3-0.6 nm referring to the results from the nitrogen adsorption isotherm. The water vapor adsorption isotherms indicated that the natural imogolite plotted a proportional isothermal curve where the amount of adsorbed water increased in proportion to P/P0: the maximum amount of adsorbed water was ca. 60 wt%. The synthetic imogolite showed a rapid increase at 0.9-0.95 range of P/P0 and achieved a maximum of ca 80 wt%, with a better methane storage property than that of the usual compressed natural gas storage. In order to obtain a high ratio of water adsorption and a large methane storage capacity, it is necessary to control the micro/meso porous structure and the hydrophilic/hydrophobic surface affinity. It is expected that the synthetic imogolite might become a multipurpose adsorbent.
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U2 - 10.1557/proc-878-y3.1
DO - 10.1557/proc-878-y3.1
M3 - Conference contribution
AN - SCOPUS:34250005416
SN - 1558998322
SN - 9781558998322
T3 - Materials Research Society Symposium Proceedings
SP - 63
EP - 68
BT - Solvothermal Synthesis and Processing of Materials
PB - Materials Research Society
T2 - 2005 MRS Spring Meeting
Y2 - 28 March 2005 through 1 April 2005
ER -