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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la802692z
|2 doi
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|a pubmed24n0620.xml
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|a (DE-627)NLM186063466
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|a (NLM)19177649
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Silvestre-Alberto, A
|e verfasserin
|4 aut
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|a Is there any microporosity in ordered mesoporous silicas?
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 27.02.2009
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|a Date Revised 19.11.2015
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|a published: Print
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|a Citation Status MEDLINE
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|a The porous structure of nanostructured silicas MCM-41 and SBA-15 has been characterized using N2 adsorption at 77 K, before and after n-nonane preadsorption, together with immersion calorimetry into liquids of different molecular dimensions. Selective blocking of the microporosity with n-nonane proves experimentally that MCM-41 is exclusively mesoporous while SBA-15 exhibits both micro- and mesopores. Additionally, N2 adsorption experiments on the preadsorbed samples show that the microporosity on SBA-15 is located in intrawall positions, the micropore volume accounting for only approximately 7-8 % of the total pore volume. Calorimetric measurements into n-hexane (0.43 nm), 2-methylpentane (0.49 nm), and 2,2-dimethylbutane (0.56 nm) estimate the size of these micropores to be < or = 0.56 nm
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Alkanes
|2 NLM
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|a MCM-41
|2 NLM
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|a SBA-15
|2 NLM
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|a Silicon Dioxide
|2 NLM
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|a 7631-86-9
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a nonane
|2 NLM
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|a T9W3VH6G10
|2 NLM
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1 |
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|a Jardim, E O
|e verfasserin
|4 aut
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1 |
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|a Bruijn, E
|e verfasserin
|4 aut
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1 |
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|a Meynen, V
|e verfasserin
|4 aut
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1 |
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|a Cool, P
|e verfasserin
|4 aut
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1 |
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|a Sepulveda-Escribano, A
|e verfasserin
|4 aut
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1 |
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|a Silvestre-Alberto, J
|e verfasserin
|4 aut
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1 |
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|a Rodriguez-Reinoso, F
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 25(2009), 2 vom: 20. Jan., Seite 939-43
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:25
|g year:2009
|g number:2
|g day:20
|g month:01
|g pages:939-43
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|u http://dx.doi.org/10.1021/la802692z
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