DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Min-Kee | ko |
dc.contributor.author | Cho, Hae-Sung | ko |
dc.contributor.author | Srivastava, Rajendra | ko |
dc.contributor.author | Venkatesan, Chithravel | ko |
dc.contributor.author | Choi, Dae-Heung | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.date.accessioned | 2009-07-14T02:26:10Z | - |
dc.date.available | 2009-07-14T02:26:10Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2006-09 | - |
dc.identifier.citation | NATURE MATERIALS, v.5, no.9, pp.718 - 723 | - |
dc.identifier.issn | 1476-1122 | - |
dc.identifier.uri | http://hdl.handle.net/10203/10041 | - |
dc.description.abstract | Zeolites are a family of crystalline aluminosilicate materials widely used as shape-selective catalysts, ion exchange materials, and adsorbents for organic compounds(1,2). In the present work, zeolites were synthesized by adding a rationally designed amphiphilic organosilane surfactant to conventional alkaline zeolite synthesis mixtures. The zeolite products were characterized by a complementary combination of X-ray diffraction (XRD), nitrogen sorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The analyses show that the present method is suitable as a direct synthesis route to highly mesoporous zeolites. The mesopore diameters could be uniformly tailored, similar to ordered mesoporous silica with amorphous frameworks(3). The mesoporous zeolite exhibited a narrow, small-angle XRD peak, which is characteristic of the short-range correlation between mesopores, similar to disordered wormhole-like mesoporous materials(4,5). The XRD patterns and electron micrographs of the samples taken during crystallization clearly showed the evolution of the mesoporous structure concomitantly to the crystallization of zeolite frameworks. The synthesis of the crystalline aluminosilicate materials with tunable mesoporosity and strong acidity has potentially important technological implications for catalytic reactions of large molecules, whereas conventional mesoporous materials lack hydrothermal stability and acidity. | - |
dc.description.sponsorship | This work was supported by the Ministry of Science and Technology through the Creative Research Initiative Program, and by the School of Molecular Science through the Brain Korea 21Project. Synchrotron radiation XRD was supported by Pohang Light Source. The authors are grateful to S. Bai, and I. Lee for helpful discussions on electron microscopy. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | MOLECULAR-SIEVES | - |
dc.subject | SINGLE-CRYSTALS | - |
dc.subject | SILICA | - |
dc.subject | SEEDS | - |
dc.subject | MESOSTRUCTURES | - |
dc.subject | FRAMEWORKS | - |
dc.subject | STABILITY | - |
dc.subject | ACIDITY | - |
dc.subject | MCM-48 | - |
dc.subject | CARBON | - |
dc.title | Amphiphilic organosilane-directed synthesis of crystalline zeolite with tunable mesoporosity | - |
dc.type | Article | - |
dc.identifier.wosid | 000241731800019 | - |
dc.identifier.scopusid | 2-s2.0-33748255902 | - |
dc.type.rims | ART | - |
dc.citation.volume | 5 | - |
dc.citation.issue | 9 | - |
dc.citation.beginningpage | 718 | - |
dc.citation.endingpage | 723 | - |
dc.citation.publicationname | NATURE MATERIALS | - |
dc.identifier.doi | 10.1038/nmat1705 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Choi, Min-Kee | - |
dc.contributor.localauthor | Ryoo, Ryong | - |
dc.contributor.nonIdAuthor | Srivastava, Rajendra | - |
dc.contributor.nonIdAuthor | Venkatesan, Chithravel | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | MOLECULAR-SIEVES | - |
dc.subject.keywordPlus | SINGLE-CRYSTALS | - |
dc.subject.keywordPlus | SILICA | - |
dc.subject.keywordPlus | SEEDS | - |
dc.subject.keywordPlus | MESOSTRUCTURES | - |
dc.subject.keywordPlus | FRAMEWORKS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | ACIDITY | - |
dc.subject.keywordPlus | MCM-48 | - |
dc.subject.keywordPlus | CARBON | - |
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