ChemInform Abstract: Mesocellular Siliceous Foams with Uniformly Sized Cells and Windows.

✍ Scribed by Patrick Schmidt-Winkel; Wayne W. Lukens Jr.; Dongyuan Zhao; Peidong Yang; Bradley F. Chmelka; Galen D. Stucky

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 30 KB
• Volume: 30
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199918242

✦ Synopsis

1999 ion exchange, zeolites, molecular sieves, crown ethers, clays ion exchange, zeolites, molecular sieves, crown ethers, clays V 1350

18 -242

Mesocellular Siliceous Foams with Uniformly Sized Cells and Windows.

-Cubic and hexagonal mesoporous silica phases with uniform large pores are synthesized by use of nonionic triblock and star diblock copolymers as templates. Mesocellular foams are prepared in aqueous HCl from copolymer and Si(OEt) 4 in the presence of 1,3,5-trimethylbenzene resulting in yields of 94-100%. The mesostructured foams cannot be structurally indexed to any plane or space group (e.g. p6mm) or to a lamellar diffraction pattern.