Abstract
Supernatant of the coal fly ash solution was used to prepare aluminum containing MCM-48 (Al-MCM-48). It was found that most of the Si and Al components in the fly ash could be effectively transformed into MCM-48 when a surfactant mixture containing cationic cetyltetramethylammonium bromide, CTMABr and tetraoxyethylene dodecyl ether, C12(EO)4 were used as templates. Alkali fusion was found to be necessary as it improves the hydrothermal condition for synthesis of the mesoporous materials. High degree of aluminum incorporation into the tetrahedral positions was revealed when Al-MCM-48 was prepared under controlled pH condition.
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