The use of non-ionic surfactants in the synthesis of mesoporous solid leads to a porous texture offering properties in catalysis. In this work, we used non-ionic surfactants type Igépal CO-990 and MD-970, which under acidic, and in the presence of TEOS, give an amorphous texture with pores in the form of "wormhole" and whose dimensions are variable depending on the content of surfactant / silica and pH environment.A variety of materials silicic  mesoporous is obtained by the sol-gel process from a source of silica (TEOS and silica fume) and non-ionic polyoxyethylenic surfactants (CO - and DM 990 - 970). The characterization by the measures adsorption of nitrogen and electron microscopy indicate a multi porous texture with very large pores whose diameters are between 7 and 20 nm. The table gives the molecular composition of each of reagents used in the synthesis and the textural parameters.

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