There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 1583 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 1579 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.citation.volume | 111 | - |
dc.contributor.author | Kim, Hae Jin | - |
dc.contributor.author | Lee, Hyun Chul | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-22T09:36:52Z | - |
dc.date.available | 2023-12-22T09:36:52Z | - |
dc.date.created | 2015-07-28 | - |
dc.date.issued | 2007-02 | - |
dc.description.abstract | The nanostructured transition aluminas were synthesized from an aluminum alkoxide precursor in the presence of various surfactants under hydrothermal conditions without any organic additives. The synthesized nanostructured alumina materials showed different morphologies depending on surfactants with high surface area, thermal stability, and aluminum sites of different coordination. The Al-27 triple-quantum (3Q) magic-angle spinning (MAS) NMR results showed that the samples prepared with cationic and nonionic surfactants consisted of mainly gamma-Al2O3 phase and a small amount of eta-Al2O3 phase due to the presence of the distorted tetrahedral site, but that the samples with anionic and neutral surfactants were predominantly i: the eta-Al2O3 phase. The experimental and calculated values of the electric field gradient (EFG) definitely suggested that cation vacancies were preferentially located at the octahedral sites in gamma-Al2O3 whereas at the tetrahedral sites in eta-Al2O3 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY C, v.111, no.4, pp.1579 - 1583 | - |
dc.identifier.doi | 10.1021/jp0651945 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.scopusid | 2-s2.0-33847379326 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12913 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/jp0651945 | - |
dc.identifier.wosid | 000245005500007 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title.alternative | Al-27 triple-quantum magic-angle spinning nuclear magnetic resonance characterization of nanostructured alumina materials | - |
dc.title | Al-27 triple-quantum magic-angle spinning nuclear magnetic resonance characterization of nanostructured alumina materials | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | MESOPOROUS MOLECULAR-SIEVES | - |
dc.subject.keywordPlus | GAMMA-ALUMINA | - |
dc.subject.keywordPlus | METAL-OXIDES | - |
dc.subject.keywordPlus | SURFACTANT | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | NMR | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.