期刊
COMPTES RENDUS CHIMIE
卷 12, 期 6-7, 页码 793-800出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2008.09.014
关键词
Al-MCM-41; B-MCM-41; Structure; XRD; ATR-FT-IR; N-2-sorption
A series of mesoporous aluminosilicate and borosilicate molecular sieves with the MCM-41 structure have been synthesized with different SiO2/Al2O3 or SiO2/B2O3 mass ratios of 5, 10, 25, 50, 70 and 150. The samples were synthesized using the direct method with a duration of 48 h. As silica source colloidal silica (ludox 40%, Prolabo), as aluminium source sodium aluminates and boric acid as the boron source were used in these syntheses. All samples were characterized by X-ray diffraction (XRD), ATR-FT-IR, N-2 gassorption and elemental analysis by electron microscopy. XRD revealed that the characteristic MCM-41 structure is obtained for both mass ratios greater than 10. B-MCM-41 gives a better organization of the structure than Al-MCM-41. The B substitution in MCM-41 gives a tetrahedral configuration as proven by ATR-FT-IR. The pore diameter is very similar in both samples. To cite this article: M. Adjdir et al., C. R. Chimie 12 (2009). (C) 2008 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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