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Quantitative measurement of a mixture of mesophases cubic MCM-48 and hexagonal MCM-41 by 13C CP/MAS NMR.

Nur, Hadi and Guan, Lau Chin and Endud, Salasiah and Hamdan, Halimaton (2004) Quantitative measurement of a mixture of mesophases cubic MCM-48 and hexagonal MCM-41 by 13C CP/MAS NMR. Materials Letters , 58 (12-13). pp. 1971-1974. ISSN 0167-577X

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Official URL: http://dx.doi.org/10.1016/j.matlet.2003.12.012

Abstract

Quantitative measurement of a mixture of cubic MCM-48 and hexagonal MCM-41 mesophases by means of 13C CP/MAS NMR was discussed. The synthesis of pure cubic MCM-48, pure hexagonal MCM-41 and mixed hexagonal-cubic phases were carried out via mixed cationic-neutral templating route. The result show that in a mixture of hexagonal-cubic phase the presence of MCM-48 at a certain level could not be identified by XRD due to the very weak reflections. The result also show that the technique can be applied to a wide range of mesoporous structures.

Item Type:Article
Uncontrolled Keywords:13C CP/MAS NMR, characterization methods, MCM-41, MCM-48
Subjects:Q Science > Q Science (General)
Divisions:Science
ID Code:7481
Deposited By: Nur Amal Zakiah Shamsudin
Deposited On:06 Jan 2009 03:41
Last Modified:29 Aug 2012 09:03

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