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Observation of Adsorption of Water in MCM-41 with Neutron Diffraction
Adsorption/desorption of water in the mesoporous material MCM-41 was observed with neutron diffraction. Results obtained with a H2O/D2O mixture contrast-matched to the host material unambiguously show that the pores are fully hydrated in the presence of excess water. During desorption carried out by...
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Published in: | Langmuir 2002-02, Vol.18 (4), p.975-977 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Adsorption/desorption of water in the mesoporous material MCM-41 was observed with neutron diffraction. Results obtained with a H2O/D2O mixture contrast-matched to the host material unambiguously show that the pores are fully hydrated in the presence of excess water. During desorption carried out by air-drying a saturated sample, water in the partially filled pores redistributes and the statistical distribution of water within each pore is characterized by a smooth function that decreases from a maximum around the edge to a minimum at the center. |
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ISSN: | 0743-7463 1520-5827 |
DOI: | 10.1021/la0014252 |