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231224s2014 xx |||||o 00| ||eng c |
| 024 |
7 |
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|a 10.1021/la501594t
|2 doi
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|a pubmed24n0798.xml
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|a (NLM)24963698
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Van der Perre, Stijn
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Adsorptive characterization of the ZIF-68 metal-organic framework
|b a complex structure with amphiphilic properties
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 11.05.2015
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|a Date Revised 22.07.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In this experimental study, the adsorption behavior of the ZIF-68 heterolinked zeolitic imidazolate framework has been explored. Vapor phase adsorption isotherms of linear C1-C6 alcohols, C6 alkane isomers, aromatics (benzene, toluene, xylene isomers, 1,3,5-trimethylbenzene, and 1,3,5-triisopropylbenzene), and polar adsorbates (water, acetonitrile, and acetone) are reported and discussed. The complex pore structure of ZIF-68, with two one-dimensional channels, each with a different polarity, displays an overall hydrophobic character. Its two-pore system results in S-shaped isotherms for small polar adsorbates (small alcohols, acetone, and acetonitrile), while longer alcohols and nonpolar molecules, such as aromatics and C6 alkane isomers, lead to type I adsorption isotherms. Bulky molecules, with a kinetic diameter significantly larger than the pore windows, are adsorbed in large amounts, which gave reason to think that this ZIF-68 material has a certain degree of framework flexibility to enlarge the free aperture of the channels. Besides, diffusion coefficients from vapor phase uptake and infrared experiments point to a different adsorption mechanism for polar and nonpolar adsorbates. Liquid phase adsorption experiments demonstrated the separation of alcohol mixtures (ethanol/1-butanol) at low concentration from water, with a clear preference for 1-butanol
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|a Journal Article
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|a Van Assche, Tom
|e verfasserin
|4 aut
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|a Bozbiyik, Belgin
|e verfasserin
|4 aut
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|a Lannoeye, Jeroen
|e verfasserin
|4 aut
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|a De Vos, Dirk E
|e verfasserin
|4 aut
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|a Baron, Gino V
|e verfasserin
|4 aut
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|a Denayer, Joeri F M
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 30(2014), 28 vom: 22. Juli, Seite 8416-24
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:30
|g year:2014
|g number:28
|g day:22
|g month:07
|g pages:8416-24
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|u http://dx.doi.org/10.1021/la501594t
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