SYNTHESIS AND CHARACTERIZATION OF MCM-41 AND METAL-SUPPORTED MCM-41 MATERIALS USING DIFFERENT METHODS

Authors : Ümran GEDİKLİ, Zarife MISIRLIOĞLU, Pınar ACAR BOZKURT, Ahmet Muammer CANEL

Pages : 23-39

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Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :One of the known groups of mesoporous materials is MCM-41 that has been applied as catalyst for various chemical reactions. In the content of this study, using cetylytrimethylammonium bromide insert ignore into journalissuearticles values(CTAB); as surfactant, sodium silicate and tetraethylortosilicate insert ignore into journalissuearticles values(TEOS); as silica source mesoporous materials MCM-41 was synthesized by hydrothermal synthesis method and sonochemical synthesis method. The obtained results showed that MCM-41 synthesized by the sonochemical method had higher specific surface area and pore volume than those synthesized by the hydrothermal method. Also, the effects of silica source on the distribution of products were studied and sodium silicate was found to be more suitable for the synthesis of MCM-41. Based on determinated optimum conditions, MCM-41 supported Al, Co and Fe having different ratios of metal insert ignore into journalissuearticles values(Metal/Si: ratio 0.05, 0.1 and 0.2); was synthesized. It was observed that metal dispersion on MCM-41 was homogenous for all samples and its particles sizes were between 10 nm to 30 nm. Synthesized mesoporous materials were characterized by X-ray diffraction insert ignore into journalissuearticles values(XRD);, scanning electron microscopy insert ignore into journalissuearticles values(SEM);, energy dispersion spectroscopy insert ignore into journalissuearticles values(EDS); and Brunauer Emmett Teller insert ignore into journalissuearticles values(BET); surface area methods.
Keywords : MCM 41, mesoporous materials, hydrothermal method, sonochemical method, synthesis, characterization