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Science 13 November 1998:
Vol. 282. no. 5392, p. 1225
DOI: 10.1126/science.282.5392.1225g
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The high thermal stability of zeolites, which have angstrom-scale pores, allows their use in demanding industrial applications. Mesoporous materials, with larger nanometer-scale pores, have had much more limited stability, especially under hydrothermal conditions. Kim et al. (p. 1302) prepared mesoporous vesicles (pore sizes of 2.7 to 4 nanometers) that have very high cross-linking of the silicate tetrahedral network and that remain stable after 150 hours in boiling water.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)