2007 Volume 40 Issue 13 Pages 1159-1165
New nanoporous materials and fundamental concepts on molecule–solid interaction are introduced. The nanopore structures of single wall carbon nanotube (SWCNT), single wall carbon nanohorn (SWCNH), double wall carbon nanotube (DWCNT), and highly flexible Cu-complex crystals as a representative of metal organic frameworks (MOFs) are explained. Adsorption properties of SWCNT, SWCNH, and DWCNT for supercritical CH4 and H2 and Cu-complex crystals for supercritical CH4 are shown. DWCNT has a better adsorption potential for supercritical H2 than SWCNT. The Cu-complex crystals form very quickly a new clathrate compound with CH4 molecules on adsorption of CH4; the reproducible clathrate formation is sensitive to temperature.
