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Type: Artigo de periódico
Title: Stability Of Layered Aluminum And Magnesium Organosilicates
Author: Moscofian A.S.O.
Silva C.R.
Airoldi C.
Abstract: New nanostructered layered inorganic-organic aluminum (Sil-Al) and magnesium (Sil-Mg) organosilicates - were prepared by a single step template sol-gel route under mild conditions, using a new alkoxysilane [(3-urea-dodecyl)propyl]triethoxysilane, containing embedded polar urea groups. The hybrids were characterized by elemental analysis, infrared spectroscopy, solid-state 29Si, 13C and 27Al nuclear magnetic resonance and X-ray diffraction. The XRD data showed that the magnesium hybrid material exhibits a lamellar structure similar to talc, a natural inorganic silicate. In order to employ these alternative sorbent materials for solid phase extraction applications, the chemical stability of the hybrids were investigated over a wide pH range varying from 2 to 12. © 2007 Elsevier Inc. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.micromeso.2007.05.047
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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