Synthesis of ordered cerium-doped cubic mesoporous silica using long-chain ionic liquid as template.

Autor: Yue, Hongxia, Zhao, Hongmei, Liu, Longjiang, Wang, Siping, Ruan, Qiong, Wang, Tongwen
Zdroj: Frontiers of Chemical Engineering in China; Jun2008, Vol. 2 Issue 2, p135-139, 5p
Abstrakt: The long-chain ionic liquid 1-hexadecyl-3-methylimidazolium chloride (C16mimCl) was used as a template to prepare cerium-doped MCM-48 materials in basic medium by a hydrothermal synthesis procedure. The effect of the amount of Ce salt and C16mimCl/Si on the synthesis were discussed in detail. This mesoporous material exhibits a pore architecture which is cubic Ia3d gyroid and possesses a large surface area and a narrow pore distribution. Cerium in calcined porous framework exists in the form of well-dispersed tetrahedral coordination. The C16mimCl shows a high tendency toward self-aggregation that allows the formation of the cerium-doped gyroid mesostructure by using the appropriate amount of Ce salt. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index