SEARCH Articles Figures Tables 18-membered ring structures, large pore zeolite 18-membered ring structures, large pore zeolite molecular sieves 18-membered ring structures, large pore zeolite silicates Ring Number of Pore Opening and Channel Dimension in Zeolites Ring openings zeolite-supported nucleophiles Ring structures molecular dyes in zeolite L channels THREE-MEMBERED RING CONTAINING ZEOLITE Zeolite 12-membered ring Zeolite membered ring channels Zeolites channel ring size Zeolites zeolite-supported nucleophiles, ring