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- W2361930448 abstract "The well-ordered hexagonal mesoporous silica structure was synthesized under acidic media, taking tetraethyl orthosilicate (TEOS) as the silicon source and hexadecyltriethylammonium bromide (CTAB) as the template. In order to obtain the mesoporous molecular sieve designated as SBA-3 of high quality, surfactant-to-silica ratio, temperature, aging time, acid concentration and the addition of polar solvent were investigated. The structures of these materials were characterized using powder X-ray diffraction, thermogravimetric analysis and thermogravimetry, and nitrogen adsorption and desorption isotherms methods. The optimized SBA-3 materials with specific surface area of 1?200 m 2/g, pore size of 2～3 nm and pore volume of 500～600 mm 3/g were synthesized in the strong acid media with the pH value of -0.6. The optimized synthesis conditions were as follows: the reaction temperature is 0℃, and the aging time is 24 hours." @default.
- W2361930448 created "2016-06-24" @default.
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- W2361930448 date "2004-01-01" @default.
- W2361930448 modified "2023-09-25" @default.
- W2361930448 title "Optimized synthesis and characterization of hexagonal mesoporous silica SBA-3" @default.
- W2361930448 hasPublicationYear "2004" @default.
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