dc.identifier.uri |
http://dx.doi.org/10.15488/2164 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/2189 |
|
dc.contributor.author |
Huang, Aisheng
|
|
dc.contributor.author |
Caro, Jürgen
|
|
dc.date.accessioned |
2017-10-30T13:31:11Z |
|
dc.date.available |
2017-10-30T13:31:11Z |
|
dc.date.issued |
2011 |
|
dc.identifier.citation |
Huang, A.; Caro, J.: Facile synthesis of LTA molecular sieve membranes on covalently functionalized supports by using diisocyanates as molecular linkers. In: Journal of Materials Chemistry 21 (2011), Nr. 30, S. 11424-11429. DOI: https://doi.org/10.1039/c1jm11549a |
|
dc.description.abstract |
Much effort has been paid towards the preparation of hydrophilic zeolite LTA membranes, and these zeolite LTA membranes have showed excellent performance in hydrophilic separations. However, there are only a few reports on successful shape-selective separations of gas mixtures on zeolite LTA membranes, most separation factors reported so far were lower than the corresponding Knudsen constants. It is often found that zeolite LTA membranes contain inter-crystalline defects to degrade their separation selectivity, which result from the problems that the isolated crystals on the support surface grow together to form a continuous supported LTA layer. In the present work, via urethane bonds formed by the reaction of isocyanate groups with surface hydroxyls, a facile synthesis method is developed for the seeding-free preparation of supported dense zeolite LTA layers by using 1,4-diisocyanate as a molecular binder to anchor the zeolite nutrients onto the support surface. The α-Al2O3 supported zeolite LTA membrane with a thickness of about 3.5 μm displays molecular sieving performance in gas permeation tests. © 2011 The Royal Society of Chemistry. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Cambridge : Royal Society of Chemistry |
|
dc.relation.ispartofseries |
Journal of Materials Chemistry 21 (2011), Nr. 30 |
|
dc.rights |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
|
dc.subject |
Diisocyanates |
eng |
dc.subject |
Excellent performance |
eng |
dc.subject |
Facile synthesis |
eng |
dc.subject |
Functionalized |
eng |
dc.subject |
Gas permeation tests |
eng |
dc.subject |
Isocyanate group |
eng |
dc.subject |
Knudsen |
eng |
dc.subject |
Molecular binders |
eng |
dc.subject |
Molecular linkers |
eng |
dc.subject |
Molecular sieve membranes |
eng |
dc.subject |
Molecular sieving |
eng |
dc.subject |
Separation factors |
eng |
dc.subject |
Separation selectivity |
eng |
dc.subject |
Surface hydroxyl |
eng |
dc.subject |
Urethane bonds |
eng |
dc.subject |
Zeolite LTA |
eng |
dc.subject |
Crystal defects |
eng |
dc.subject |
Hydrophilicity |
eng |
dc.subject |
Molecular sieves |
eng |
dc.subject |
Sieves |
eng |
dc.subject |
Surface defects |
eng |
dc.subject |
Synthesis (chemical) |
eng |
dc.subject |
Gas permeable membranes |
eng |
dc.subject.ddc |
540 | Chemie
|
ger |
dc.title |
Facile synthesis of LTA molecular sieve membranes on covalently functionalized supports by using diisocyanates as molecular linkers |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
0959-9428 |
|
dc.relation.doi |
https://doi.org/10.1039/c1jm11549a |
|
dc.bibliographicCitation.issue |
30 |
|
dc.bibliographicCitation.volume |
21 |
|
dc.bibliographicCitation.firstPage |
11424 |
|
dc.bibliographicCitation.lastPage |
11429 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|