Porous Materials Prepared by Co-condensation Synthesis Approach

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

1 LCS - Laboratoire catalyse et spectrochimie

Porous silica materials were prepared by a single step co-condensation synthesis approach using 3-mercaptopropyltrimethoxysilane (MPTS) as organo-functional compound and silica co-source. For comparison, MPTS-modified amorphous silica and pure microporous (Silicalite-1) samples were synthesized. The incorporation of MPTS into the silica structures was confirmed by 29 Si and 13 C Nuclear Magnetic Resonance (NMR) and Raman spectroscopy, while the presence of two types of pores was verified with nitrogen sorption and X-ray diffraction (XRD) measurements of as-synthesized and calcined materials. The porous materials exhibited 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.

Domaines: Chimie

Ka-Lun Wong, Mohamad El Roz, Lubomira Tosheva, Jean-Michel Goupil, Svetlana Mintova, et al.. Porous Materials Prepared by Co-condensation Synthesis Approach. Catalysis Today, 2013, 204, pp.66-72. ⟨10.1016/j.cattod.2012.07.016⟩. ⟨hal-03365282⟩