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dc.contributor.authorPark, Kyung Soo-
dc.contributor.authorKim, Jeong Hwa-
dc.contributor.authorPark, So Hyun-
dc.contributor.authorMoon, Dong Ju-
dc.contributor.authorRoh, Hyun-Seog-
dc.contributor.authorChung, Chan-Hwa-
dc.contributor.authorUm, Soong Ho-
dc.contributor.authorChoi, Joon-Hwan-
dc.contributor.authorBae, Jong Wook-
dc.date.accessioned2024-01-20T02:32:06Z-
dc.date.available2024-01-20T02:32:06Z-
dc.date.created2022-01-25-
dc.date.issued2017-01-
dc.identifier.issn1381-1169-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/123231-
dc.description.abstractDirect activation of CH4 to oxygenates and unsaturated light hydrocarbons was investigated using Fe modified ZSM-5 and Ferrierite (FER) for a partial oxidation of CH4 with N2O oxidant. The amount of active alpha-oxygen sites and number of Bronsted acid sites on the Fe-modified zeolites were well correlated with CH4 conversion rate and product distributions. The amount of alpha-oxygen sites was largely changed according to preparation method such as wet impregnation or ion-exchange of iron precursor and types of zeolites. A large number of Bronsted acid sites and alpha-oxygen sites on the Fe-modified FER revealed a higher oxygenate formation such as methanol and dimethyl ether (DME) with COx, and a larger number of strong acid sites on Fe-modified ZSM-5 was also responsible for a higher selectivity to light hydrocarbons by a successive dehydration of oxygenates formed. The different catalytic performances were verified through proper measurements of the amount and type of acidic sites as well as the alpha-oxygen sites measured by N2O pulse chemisorption. The Fe-modified FER prepared by impregnation method possessed a larger amount of alpha-oxygen sites due to abundant Bronsted acid sites, which was responsible for a higher rate of CH4 conversion to oxygenates with the help of N2O decomposition on the alpha-oxygen sites originated from iron oxide nanoparticles. (C) 2016 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleDirect activation of CH4 to oxygenates and unsaturated hydrocarbons using N2O on Fe-modified zeolites-
dc.typeArticle-
dc.identifier.doi10.1016/j.molcata.2016.11.008-
dc.description.journalClass1-
dc.identifier.bibliographicCitationJOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.426, pp.130 - 140-
dc.citation.titleJOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL-
dc.citation.volume426-
dc.citation.startPage130-
dc.citation.endPage140-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000391076300016-
dc.identifier.scopusid2-s2.0-85000501198-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalResearchAreaChemistry-
dc.type.docTypeArticle-
dc.subject.keywordPlusSELECTIVE CATALYTIC-REDUCTION-
dc.subject.keywordPlusNITROUS-OXIDE DECOMPOSITION-
dc.subject.keywordPlusDIMETHYL ETHER SYNTHESIS-
dc.subject.keywordPlusPARTIAL OXIDATION-
dc.subject.keywordPlusMETHANE OXIDATION-
dc.subject.keywordPlusSURFACE OXYGEN-
dc.subject.keywordPlusIRON-
dc.subject.keywordPlusCO-
dc.subject.keywordPlusSITES-
dc.subject.keywordPlusNO-
dc.subject.keywordAuthoralpha-Oxygen sites-
dc.subject.keywordAuthorCH4 activation-
dc.subject.keywordAuthorN2O oxidant-
dc.subject.keywordAuthorFe-modified zeolites-
dc.subject.keywordAuthorAcid sites-
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