Abstracts Book - IMRC 2018

• SF3-O051
MESOSTRUCTURED SILICA-CARBON COMPOSITES SYNTHESIZED
FROM SURFACTANT
Nataliya Gerasymenko 1 , Roberto Portillo y Reyes 1 , Enrique Sánchez Mora 2
1 Benemerita Universidad Autonoma de Puebla, Faculty of Chemical Sciences, Catalysis
Laboratory, Mexico. 2 Benemerita Universidad Autonoma de Puebla, Physics Institute, Mexico.
The development of active, selective, stable, reusable, non-polluting and
economical solid heterogeneous catalysts is very important for the
implementation of a sustainable chemistry.
In this work, in the search for solid catalysts that can be employed in the
development of heterogeneous reaction systems, the synthesis procedures of
mesoporous silica-carbon (S/C) composites used as platforms to manufacture
advanced properties materials through their functionalization was studied.
The mesostructured silicas were synthesized by hydrothermal method assisted
with structuring agent, the carbon layer was generated performing sulfuric acid
controlled oxidation of the organic template occupied as a pore structure
shaper.
The oxygenated and sulfonic groups were incorporated into the prepared
composites, to obtaining the mesoporous silica-carbon materials with active
surfaces.
The obtained materials were characterized by techniques of Nitrogen
Physisorption, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), X-
Ray Energy Dispersion Microanalysis (EDS) and Infrared Spectroscopy (FTIR).
No notably change in the typical porous structure of the original mesostructured
silica was seen, when compared S/C mesoporous composites obtained carbon
precursors surfactant and materials synthetized external carbon precursors by
conventional method. The pore sizes were adequate to allow the mass flow of
reagents and products in catalytic reactions.
The functionalized composites exhibited mesoscale periodicity and ordering in
the porous system. These materials presented specific surface area (396 m 2 /g -
875 m 2 /g) and total pore volume (0.425 cc/g - 3.579 cc/g) with quite high values.