Selective synthesis of 2,6-triad dimethylnaphthalene isomers by disproportionation of 2-methylnaphthalene over mesoporous MCM-41

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dc.contributor.authorGulec, Fatih
dc.contributor.authorNiftaliyeva, Aysel
dc.contributor.authorKaraduman, Ali
dc.date.accessioned2020-03-26T19:55:36Z
dc.date.available2020-03-26T19:55:36Z
dc.date.issued2018
dc.departmentSelçuk Üniversitesien_US
dc.description.abstract2,6-Dimethylnaphthalene (2,6-DMN) is one of the crucial intermediates for the synthesis of polybutylenenaphthalate and polyethylene naphthalate (PEN). The complex synthesis procedure and the high cost of 2,6-DMN production significantly reduce the commercialisation of PEN even though PEN demonstrates superior properties compared with polyethylene terephthalate. 2,6-DMN can be produced by methylation of 2-methylnaphthalene (2-MN) and/or naphthalene, disproportionation of 2-MN, and/or isomerisation of dimethylnaphthalenes (DMNs). In this study, synthesis of 2,6-triad DMN isomers consisting of 2,6-DMN, 1,6-DMN, and 1,5-DMN have been investigated with the disproportionation of 2-MN over unmodified and Zr-modified mesoporous MCM-41 zeolite catalysts. In contrast to other DMN isomers, both 1,5-DMN and 1,6-DMN can be effectively isomerised to be profitable 2,6-DMN. The disproportionation of 2-MN experiments were carried out in a catalytic fixed-bed reactor in the presence of 1g of catalyst at a temperature range of 350-500 degrees C and weight hourly space velocity between 1 to 3h(-1). The results demonstrated that mesoporous MCM-41 zeolite catalyst has a selective pore shape for 2,6-triad DMN isomers, which may allow a decrease in the production cost of 2,6-DMN. Additionally, 2,6-DMN was successfully synthesised by the disproportionation of 2-MN over MCM-41 zeolite catalyst. Furthermore, both the conversion of 2-MN and the selectivity of 2,6-DMN were considerably enhanced by the Zr impregnation on MCM-41.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112M297]en_US
dc.description.sponsorshipThis work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK, Project No: 112M297).en_US
dc.identifier.doi10.1007/s11164-018-3551-5en_US
dc.identifier.endpage7218en_US
dc.identifier.issn0922-6168en_US
dc.identifier.issn1568-5675en_US
dc.identifier.issue12en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage7205en_US
dc.identifier.urihttps://dx.doi.org/10.1007/s11164-018-3551-5
dc.identifier.urihttps://hdl.handle.net/20.500.12395/36936
dc.identifier.volume44en_US
dc.identifier.wosWOS:000450575500003en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.relation.ispartofRESEARCH ON CHEMICAL INTERMEDIATESen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subject2-Methylnaphthaleneen_US
dc.subject2en_US
dc.subject6-Dimethylnaphthaleneen_US
dc.subjectDisproportionationen_US
dc.subjectMCM-41en_US
dc.subjectPENen_US
dc.titleSelective synthesis of 2,6-triad dimethylnaphthalene isomers by disproportionation of 2-methylnaphthalene over mesoporous MCM-41en_US
dc.typeArticleen_US

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