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Langmuir


Title:Size-dependent properties of nanocrystalline silicalite synthesized with systematically varied crystal sizes
Author(s):Song W; Justice RE; Jones CA; Grassian VH; Larsen SC;
Address:"Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA"
Journal Title:Langmuir
Year:2004
Volume:20
Issue:11
Page Number:4696 - 4702
DOI: 10.1021/la049817m
ISSN/ISBN:0743-7463 (Print) 0743-7463 (Linking)
Abstract:"Silicalite-1 powders with crystal sizes ranging from 20 to 1000 nm were synthesized by systematically varying synthesis gel composition, pressure, temperature, and time duration. These samples were characterized by powder X-ray diffraction, scanning electron microscopy, nitrogen adsorption isotherms, solid-state nuclear magnetic resonance, and toluene adsorption. The effect of crystal size on the physical properties of crystals is observed, including a large increase of both total and external surface area when crystal size decreases. The relationship between particle size and external surface area was modeled by assuming a cubic crystal geometry. The nanosized silicalite samples with crystal sizes less than 100 nm have a higher adsorption capacity for toluene, showing promising potential for its application in volatile organic compound removal"
Keywords:
Notes:"PubMed-not-MEDLINESong, W Justice, R E Jones, C A Grassian, V H Larsen, S C eng 2005/06/23 Langmuir. 2004 May 25; 20(11):4696-702. doi: 10.1021/la049817m"

 
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