Abstract

PENA, Juan D; CARDONA, Eliana M; MARIN, Juan M  and  RIOS, Luis A. Production of Mesoporous Silica using Glycerol Monostearate as Oleochemical Porogen. Inf. tecnol. [online]. 2009, vol.20, n.6, pp.67-74. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642009000600009.

This paper describes the development of a novel synthesis of mesoporous silica based on a two-step process, in acidic media (pH = 2), using renewable raw materials. The first stage was the formation of stable hybrid micelles, product of the interaction between the porogen and silicates, and the second was the polycondensation of silicates to produce silica. Two sources of silicon were used: tetraethylortosilicate (TEOS) and sodium metasilicate (MSiNa). Glycerol monostearate was used as oleochemical porogen and sodium fluoride was used as initiator for the reaction of condensation of silica. The silica obtained with the best textural properties have interesting surface characteristics for potential applications in heterogeneous catalysis, with BET surface area of 727.4 m² / g, total volume of pores of 0.50 cm³/g and pore size distribution of about 46.2 Å.

Keywords : glycerol monostearate; mesoporous silica; oleochemical porogen; sodium metasilicate; tetraethylortosilicate.

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