DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, MB | - |
dc.contributor.author | Cho, SJ | - |
dc.contributor.author | Hong, SB | - |
dc.date.accessioned | 2016-03-31T09:42:50Z | - |
dc.date.available | 2016-03-31T09:42:50Z | - |
dc.date.created | 2011-05-16 | - |
dc.date.issued | 2011-02-16 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.other | 2011-OAK-0000023493 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/17502 | - |
dc.description.abstract | Aluminosilicate and gallosilicate zeolite syntheses via a charge density mismatch (CDM) approach are compared at intermediate-silica compositions (Si/Me = 5-16, where Me is Al or Ga). With a variation of the crystallization temperature and of the type and/or concentration of alkali metal ions added as a crystallization structure-directing agent (SDA) to tetraethylammonium tetraethylammonium-tetraethylammonium-hexamethonium, and strontium-choline mixed-SDA systems, we were able to obtain 11 different zeolite structures. However, only 5 out of a total 40 pairs of aluminosilicate and gallosilicate synthesis runs at otherwise identical chemical compositions were found to give the same zeolite product with no detectable impurities, suggesting that the structure-directing ability of Ga is quite different from that of Al even in intermediate-silica synthesis conditions. The CDM approach to offretite synthesis led to hexagonal plate-like crystals with aspect ratios lower than 0.3, and UZM-22 exhibited no significant preference of Al substitution for particular tetrahedral sites, especially for site T1, unlike its framework type material ZSM-18. More interestingly, the EU-1 zeolite obtained from an aluminosilicate synthesis mixture containing Li+ as an inorganic crystallization SDA in the tetraethylammonium hexamethonium double-organic additive system has been characterized to locate about half of its Li+ ions in the framework, while the Li distribution over the 10 topologically different tetrahedral sites is nonrandom in nature. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.subject | HIGH-SILICA ZEOLITES | - |
dc.subject | POWDER DIFFRACTION | - |
dc.subject | HYDROGEN-BONDS | - |
dc.subject | STRUCTURAL-CHARACTERIZATION | - |
dc.subject | MICROPOROUS LITHOSILICATE | - |
dc.subject | CRYSTAL-STRUCTURES | - |
dc.subject | ETHYLENE-GLYCOL | - |
dc.subject | SI/AL RATIO | - |
dc.subject | FRAMEWORK | - |
dc.subject | NMR | - |
dc.title | Synthesis of Aluminosilicate and Gallosilicate Zeolites via a Charge Density Mismatch Approach and Their Characterization | - |
dc.type | Article | - |
dc.contributor.college | 환경공학부 | - |
dc.identifier.doi | 10.1021/JA1095057 | - |
dc.author.google | Park, MB | - |
dc.author.google | Cho, SJ | - |
dc.author.google | Hong, SB | - |
dc.relation.volume | 133 | - |
dc.relation.issue | 6 | - |
dc.relation.startpage | 1917 | - |
dc.relation.lastpage | 1934 | - |
dc.contributor.id | 10077624 | - |
dc.relation.journal | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.133, no.6, pp.1917 - 1934 | - |
dc.identifier.wosid | 000287831800065 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 1934 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 1917 | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 133 | - |
dc.contributor.affiliatedAuthor | Hong, SB | - |
dc.identifier.scopusid | 2-s2.0-79951547838 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 24 | - |
dc.description.scptc | 23 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | HYDROGEN-BONDS | - |
dc.subject.keywordPlus | STRUCTURAL-CHARACTERIZATION | - |
dc.subject.keywordPlus | MICROPOROUS LITHOSILICATE | - |
dc.subject.keywordPlus | POWDER DIFFRACTION | - |
dc.subject.keywordPlus | CRYSTAL-STRUCTURE | - |
dc.subject.keywordPlus | ETHYLENE-GLYCOL | - |
dc.subject.keywordPlus | SI/AL RATIO | - |
dc.subject.keywordPlus | FRAMEWORK | - |
dc.subject.keywordPlus | SILICA | - |
dc.subject.keywordPlus | NMR | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
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