Studies on the organic molecular sieves with organic and/or organometallic
molecules as the tectons are reviewed. Research works in Japan for the synt
hesis and application of this organic three-dimensional tectonics are emerg
ing. Osaka Gas announced development of a natural gas reservoir (for NG-fue
led cars) based on the adsorbent of the Cu-dicarboxylate. Catalytic applica
tion is also started in Japan.