(under subclass 60) Composition in which a zeolite comprises 4 or 5 membered rings of SiO4 and AlO4 tetahedra, so arranged that the crystal lattice comprises pores and channels running parallel along the crystal axis to give a tubular configuration without intersections allowing access to the cavities in only one direction.
(1) Note. Mordenite generally has a silica to alumina ratio of about 8 to about 12.
