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Extra-Large-Pore Zeolites with Two-Dimensional Channels Formed by 14 and 12 Rings

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Science  14 May 2004:
Vol. 304, Issue 5673, pp. 990-992
DOI: 10.1126/science.1098242

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Abstract

Stable zeolites that have larger pore apertures and a three-dimensional pore topology are of interest because they could be used to adsorb larger molecules, particularly for application in oil refining. Several large-pore zeolitic materials with channels formed by openings of more than 12 rings are known, but all of them have a one-dimensional channel system that limits their use in catalysis. We report the synthesis and some characterizations of IM-12, a thermally stable germanium-containing zeolite that contains the first two-dimensional channel system with extra-large pores formed by 14- and 12-ring channels.

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