Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Disintegration of Mesoporous Structures of MCM-41 and MCM-48 in Water

  • Published : 19960100
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Abstract

It has been found that mesoporous structures of MCM-41 and MCM-48 disintegrate readily in distilled water around 370 K, while the structures can be stable in 100%-steam of 1 atmospheric pressure at much higher temperatures around 820 K. Thus, the structure disintegration is thermodynamically more favorable in water than under the steaming condition. X-ray powder diffraction and magic angle spinning 29Si NMR spectroscopy indicate that the disintegration of the mesoporous structures in water occurs due to silicate hydrolysis.

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References

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