MFI-type materials prepared by co-condensation synthesis approach

Ka-Lun Wong , Mohamad El-Roz (1) , Lubomira Tosheva (2) , Jean-Michel Goupil (1) , Svetlana Mintova (1)

1 LCS - Laboratoire catalyse et spectrochimie
2 LMPC - Laboratoire de Matériaux à Porosité Contrôlée

Pure silica MFI-type materials were synthesized by a single step co-condensation approach using 3-mercaptopropyltrimethoxysilane (MPTS-Silicalite-1) as organo-functional compound and silica co-source. For comparison, MPTS-modified amorphous silica and Silicalite-1 templated with tetrapropylammonium hydroxide (TPA-Silicalite-1) were prepared. The incorporation of MPTS into the silica structures was confirmed by Si-29 and C-13 nuclear magnetic resonance (NMR) and Raman spectroscopy, while the porosity of the samples was verified with nitrogen sorption measurements. The MPTS-Silicalite-1 materials exhibit improved hydrophobicity in comparison with the samples prepared in the absence of MPTS. The presented method is simple and less toxic than the acid-meditated synthesis approach commonly applied for the preparation of hydrophobic zeolitic materials. (c) 2012 Elsevier B.V. All rights reserved.

Mots clés: Co-condensation synthesis approach; Hydrophobicity; MFI-type materials

Domaines: Chimie; Catalyse

Ka-Lun Wong, Mohamad El-Roz, Lubomira Tosheva, Jean-Michel Goupil, Svetlana Mintova. MFI-type materials prepared by co-condensation synthesis approach. Catalysis Today, 2013, 204, pp.66-72. ⟨10.1016/j.cattod.2012.07.016⟩. ⟨hal-01840297⟩