File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

이재성

Lee, Jae Sung
Eco-friendly Catalysis & Energy Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.citation.endPage 193 -
dc.citation.number 2 -
dc.citation.startPage 183 -
dc.citation.title JOURNAL OF CATALYSIS -
dc.citation.volume 207 -
dc.contributor.author Choo, Dae Hyun -
dc.contributor.author Kim, Hae Jin -
dc.contributor.author Kong, Byung Hee -
dc.contributor.author Choi, Il Seok -
dc.contributor.author Ko, Young Chan -
dc.contributor.author Lee, Hee Cheon -
dc.contributor.author Kim, Jae Chang -
dc.contributor.author Lee, Jae Sung -
dc.date.accessioned 2023-12-22T11:38:43Z -
dc.date.available 2023-12-22T11:38:43Z -
dc.date.created 2015-07-23 -
dc.date.issued 2002-04 -
dc.description.abstract Liquid-phase cycloisomerization of 5-(o-tolyl)-pentene (OTP) was conducted using a commercial nanocrystalline zeolite BEA. Zeolite BEA was a good catalyst for selective synthesis of 1,5-dimethyltetralin (1,5-DMT). However, over certain zeolite BEA, isomerization of 1,5-DMT to other isomers occurred after cyclization of OTP was almost complete at high temperatures. Textual properties of nanocrystalline BEA did not influence the cyclization activity, but the degree of postsynthetic treatments such as surface poisoning, passivation, and dealumination had great effects. Reactions over BEA modified by triphenylphosphine poisoning and Si layer coating of the outer surface of zeolite crystatlites revealed that strong acid sites residing only on the external surface of zeolite BEA were responsible for isomerization activity. The Al-27 magic-angle spinning nuclear magnetic resonance study for dealuminated zeolites together with the IR study of adsorbed pyridine clearly demonstrated that the concentration of Bronsted acid sites due to the framework aluminum was directly related to cyclization activity. On the other hand, octahedral aluminum did not participate in either OTP cyclization or DMT isomerization. (C) 2002 Elsevier Science (USA) -
dc.identifier.bibliographicCitation JOURNAL OF CATALYSIS, v.207, no.2, pp.183 - 193 -
dc.identifier.doi 10.1006/jcat.2002.3522 -
dc.identifier.issn 0021-9517 -
dc.identifier.scopusid 2-s2.0-0036352191 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/12537 -
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0021951702935220# -
dc.identifier.wosid 000175354900004 -
dc.language 영어 -
dc.publisher ACADEMIC PRESS INC ELSEVIER SCIENCE -
dc.title.alternative Cycloisomerization of 5-(o-tolyl)-pentene over modified zeolite BEA -
dc.title Cycloisomerization of 5-(o-tolyl)-pentene over modified zeolite BEA -
dc.type Article -
dc.description.journalRegisteredClass scopus -

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.