207 0

Full metadata record

DC FieldValueLanguage
dc.contributor.author서영웅-
dc.date.accessioned2017-11-21T00:34:48Z-
dc.date.available2017-11-21T00:34:48Z-
dc.date.issued2016-01-
dc.identifier.citationRESEARCH ON CHEMICAL INTERMEDIATES, v. 42, Page. 57-70en_US
dc.identifier.issn0922-6168-
dc.identifier.issn1568-5675-
dc.identifier.urihttps://link.springer.com/article/10.1007%2Fs11164-015-2224-x-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/31704-
dc.description.abstractIn catalytic decomposition of dimethylhexane-1,6-dicarbamate (HDC) into hexamethylene-1,6-diisocyanate (HDI), Zn-containing homogeneous (i.e., zinc acetate) and heterogeneous (i.e., ZnO) catalysts were active among a number of catalysts tested, due to the great electron withdrawing ability of Zn ions. Particularly, when polyethylene glycol dimethyl ether was used as a solvent, ZnO was found to be relatively robust, because the catalytic performance was maintained up to the third use (HDC conversion of 93 % and HDI yield of 67 % at 180 A degrees C for 1 h). Through investigation of a HDC/ZnO mixture at elevated temperatures by IR spectroscopy, a possible reaction scheme of ZnO-catalyzed decomposition of HDC was proposed. The H atom is removed from the N-H group of HDC by hydrogen bonding with an O site on the ZnO surface, followed by coordination of an O-C=O group in monodentate mode to a Zn site. The C-O group in the O-C=O linkage is then cleaved yielding the isocyanate and surface methoxide species. Finally, methanol is released from ZnO by a reaction between the surface methoxide and the hydroxyl species.en_US
dc.description.sponsorshipThis research was supported by the Fusion Research Program for Green Technologies through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2012M3C1A1054501).en_US
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.subjectCatalytic decompositionen_US
dc.subjectHexamethylene-1,6-diisocyanateen_US
dc.subjectDimethylhexane-1,6-dicarbamateen_US
dc.subjectZnOen_US
dc.titlePhosgene-free decomposition of dimethylhexane-1,6-dicarbamate over ZnOen_US
dc.typeArticleen_US
dc.relation.volume42-
dc.identifier.doi10.1007/s11164-015-2224-x-
dc.relation.page57-70-
dc.relation.journalRESEARCH ON CHEMICAL INTERMEDIATES-
dc.contributor.googleauthorHyun, Min Jeong-
dc.contributor.googleauthorShin, Mi-
dc.contributor.googleauthorKim, Yong Jin-
dc.contributor.googleauthorSuh, Young-Woong-
dc.relation.code2016002497-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF CHEMICAL ENGINEERING-
dc.identifier.pidywsuh-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE