DC Field | Value | Language |
---|---|---|
dc.contributor.author | Katada, N | - |
dc.contributor.author | Nouno, K | - |
dc.contributor.author | Lee, JK | - |
dc.contributor.author | Shin, J | - |
dc.contributor.author | Hong, SB | - |
dc.contributor.author | Niwa, M | - |
dc.date.accessioned | 2016-03-31T09:10:44Z | - |
dc.date.available | 2016-03-31T09:10:44Z | - |
dc.date.created | 2012-03-15 | - |
dc.date.issued | 2011-11-17 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.other | 2011-OAK-0000024913 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/16770 | - |
dc.description.abstract | Acidic properties of cage-based, small-pore aluminosilicate zeolites with CHA, AFX, RHO, LEV, ERI, and LTA topologies and their silicoaluminophosphate (SAPO) analogues were measured by means of an ammonia IRMS (infrared/mass spectroscopy)-TPD (temperature-programmed desorption) method. All SAPO molecular sieves studied here showed weaker Bronsted acid strength (11-26 kJ mol(-1) lower in the lot heat of ammonia desorption) than their aluminosilicate counterparts. The density functional theory (DFT) calculations of the ammonia desorption energy were in good agreement with experiments; the difference in the energy of ammonia desorption was less than 10 kJ mol(-1). DFT also showed that the introduction of Al into the SiO2 framework to form aluminosilicate zeolites resulted in large changes to the distance between atoms close;100 to the acid site, while Si substitution into the AlPO4 framework to form SAPO materials I 91 predominantly modified the angles between atoms relatively far from the acid site. The introduction of Al into SiO2 frameworks causes higher compression of the Al-OH-Si bridge, inducing strongly acidic behavior, while the more flexible Al-O-P bond relaxed the compression in SAPO frameworks. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.subject | STRUCTURE-DIRECTING AGENTS | - |
dc.subject | AMMONIA IRMS-TPD | - |
dc.subject | MOLECULAR-SIEVE | - |
dc.subject | ADSORBATE INTERACTIONS | - |
dc.subject | CHABAZITE H-SSZ-13 | - |
dc.subject | METHANOL | - |
dc.subject | ADSORPTION | - |
dc.subject | CONVERSION | - |
dc.subject | SAPO-34 | - |
dc.subject | UZM-12 | - |
dc.title | Acidic Properties of Cage-Based, Small-Pore Zeolites with Different Framework Topologies and Their Silicoaluminophosphate Analogues | - |
dc.type | Article | - |
dc.contributor.college | 환경공학부 | - |
dc.identifier.doi | 10.1021/JP207894N | - |
dc.author.google | Katada, N | - |
dc.author.google | Nouno, K | - |
dc.author.google | Lee, JK | - |
dc.author.google | Shin, J | - |
dc.author.google | Hong, SB | - |
dc.author.google | Niwa, M | - |
dc.relation.volume | 115 | - |
dc.relation.issue | 45 | - |
dc.relation.startpage | 22505 | - |
dc.relation.lastpage | 22513 | - |
dc.contributor.id | 10077624 | - |
dc.relation.journal | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.45, pp.22505 - 22513 | - |
dc.identifier.wosid | 000296685800050 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 22513 | - |
dc.citation.number | 45 | - |
dc.citation.startPage | 22505 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.citation.volume | 115 | - |
dc.contributor.affiliatedAuthor | Hong, SB | - |
dc.identifier.scopusid | 2-s2.0-80955131935 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 21 | - |
dc.description.scptc | 18 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | STRUCTURE-DIRECTING AGENTS | - |
dc.subject.keywordPlus | AMMONIA IRMS-TPD | - |
dc.subject.keywordPlus | MOLECULAR-SIEVE | - |
dc.subject.keywordPlus | ADSORBATE INTERACTIONS | - |
dc.subject.keywordPlus | CHABAZITE H-SSZ-13 | - |
dc.subject.keywordPlus | METHANOL | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | SAPO-34 | - |
dc.subject.keywordPlus | UZM-12 | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
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