Inside Cover: Desilication Mechanism Revisited: Highly Mesoporous All-Silica Zeolites Enabled Through Pore-Directing Agents (Chem. Eur. J. 4/2011)
نویسندگان
چکیده
منابع مشابه
Pore Narrowing of Mesoporous Silica Materials
To use mesoporous silicas as low-k materials, the pore entrances must be really small to avoid diffusion of metals that can increase the dielectric constant of the low-k dielectric. In this paper we present a new method to narrow the pores of mesoporous materials through grafting of a cyclic-bridged organosilane precursor. As mesoporous material, the well-studied MCM-41 powder was selected to a...
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Larissa Miller,1 Gordon Winter,2 Benjamin Baur,2 Barbara Witulla,2 Christoph Solbach,2 Sven Reske,2,* Mika Lindén1,* 1 Department of Inorganic Chemistry II, University Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany 2 Clinic for Nuclear Medicine, University Ulm, Albert-Einstein-Allee 23, D-89081 Ulm, Germany Corresponding author e-mail addresses: [email protected], [email protected]
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The synthesis of the ZSM-5 and beta zeolites in their nanosized form has been achieved by using simple alkyl-substituted mono-cationic cyclic ammonium cations as OSDA molecules. The particular combination of a cyclic fragment and a short linear alkyl-chain group (preferentially C4) within the monocationic OSDA molecules allows directing the crystallization of nanosized zeolites with excellent s...
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Successive mesophase transformation induced by an anionic surfactant such as sodium dioctyl sulfosuccinate (AOT) has been demonstrated to fabricate four kinds of large pore mesoporous silica materials in a triblock copolymer F127 surfactant assembly system. The transformation of the highly ordered mesostructures from face-centered cubic (space group Fm3̄m) to body-centered Im3̄m then towards two-...
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ژورنال
عنوان ژورنال: Chemistry - A European Journal
سال: 2011
ISSN: 0947-6539
DOI: 10.1002/chem.201190012