A STUDY ON SYNTHESIS OF MCM-41 MESOPOROUS MATERIAL WITH SOURCE OF SODIUM SILICATE SOLUTION FROM RICE HUSK ASH

Hoàng Văn Đức

DOI: http://dx.doi.org/10.26459/hueuni-jns.v126i1C.4456

Abstract


In the present paper, a synthesis of MCM-41 mesoporous material with the sodium silicate solution prepared from the rice husk ash as a silica source by the hydrothermal process was demonstrated. The influence of synthesized conditions such as CTAB concentration, SiO2/CTAB molar ratio, stirring time and hydrothermal time were investigated. The samples were characterized by XRD, FT–IR and N2 adsorption–desorption measurement. The obtained results showed that the samples possessed highly ordered hexagonal mesostructure with uniform mesopore size distribution in a large range of CTAB concentration (1,98-4,81% mass) and the SiO2/CTAB molar ratio (4-15). The sample had a high surface area (1071 m2/g) and large pore diameter (33,5 Å) with the molar ratio of CTAB: SiO2: H2O = 1: 6: 1000.

Keywords: MCM-41, sodium silicate solution, rice husk ash


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