Quantitative measurement of a mixture of mesophases cubic MCM-48 and hexagonal MCM-41 by 13C CP/MAS NMR.
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 tha...
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Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier Science B.V.
2004
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Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/7481/1/H_M_Hamdan_2004_Quantitative_Measurement_Of_A_Mixture.pdf http://eprints.utm.my/id/eprint/7481/ http://dx.doi.org/10.1016/j.matlet.2003.12.012 |
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Summary: | 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. |
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