Full metadata record

DC Field Value Language
dc.contributor.authorNguyen, Que Thi-
dc.contributor.authorDo, Xuan Huy-
dc.contributor.authorCho, Kie Yong-
dc.contributor.authorLee, Yu-Ri-
dc.contributor.authorBaek, Kyung-Youl-
dc.date.accessioned2024-01-19T11:34:06Z-
dc.date.available2024-01-19T11:34:06Z-
dc.date.created2022-06-17-
dc.date.issued2022-07-
dc.identifier.issn2212-9820-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/114914-
dc.description.abstractAmine-functionalized bimetallic zeolitic imidazolate framework-8 (Co/Zn-ZIF-A) with 3-amino-1,2,4-triazole (Atz) was synthesized by a post-synthetic modification and utilized as a heterogeneous catalyst for the synthesis of cyclic carbonates from CO2 and epoxides. Different amine contents in Co/Zn-ZIF-A materials were controlled by adjusting the ligand exchange reaction time of the of 2-mIM with Atz. Co/Zn-ZIF-A-24 h with the highest amine contents (32% of Atz) achieved an excellent result of 99% conversion of epichlorohydrin with high selectivity of > 99% after 24 h without co-catalyst and solvent under mild conditions (80 oC, 1 bar CO2). The enhanced catalytic activity is attributed to the acid-base synergistic effect by the combination of bimetallic systems consisting of Zn and Co as Lewis acid sites and the abundant Lewis bases sites of -NH2, -NH groups from Atz ligand. A kinetic study of the cycloaddition reaction over Co/Zn-ZIF-A-24 h confirmed an approximately firstorder dependence on the epichlorohydrin concentration and CO2 pressure with an activation energy of approximately 39.5 kJ mol-1. Co/Zn-ZIF-A-24 h catalyst showed good reusability with no obvious loss in catalytic activity during five recycling runs and its structural stability was also confirmed. A plausible reaction mechanism of Co/Zn-ZIF-A catalyst for CO2-epoxide cycloaddition was proposed.-
dc.languageEnglish-
dc.publisherElsevier BV-
dc.titleAmine-functionalized bimetallic Co/Zn-zeolitic imidazolate frameworks as an efficient catalyst for the CO(2 )cycloaddition to epoxides under mild conditions-
dc.typeArticle-
dc.identifier.doi10.1016/j.jcou.2022.102061-
dc.description.journalClass1-
dc.identifier.bibliographicCitationJournal of CO2 Utilization, v.61-
dc.citation.titleJournal of CO2 Utilization-
dc.citation.volume61-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000804474700002-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryEngineering, Chemical-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaEngineering-
dc.type.docTypeArticle-
dc.subject.keywordPlusMETAL-ORGANIC FRAMEWORK-
dc.subject.keywordPlusCYCLIC CARBONATES-
dc.subject.keywordPlusCHEMICAL FIXATION-
dc.subject.keywordPlusHETEROGENEOUS CATALYST-
dc.subject.keywordPlusAMBIENT-PRESSURE-
dc.subject.keywordPlusCO2 ADSORPTION-
dc.subject.keywordPlusCYCLOADDITION-
dc.subject.keywordPlusCONVERSION-
dc.subject.keywordPlusPOLYMER-
dc.subject.keywordPlusZIF-8-
dc.subject.keywordAuthorAmine-functionalization-
dc.subject.keywordAuthorBimetallic zeolitic imidazolate frameworks-
dc.subject.keywordAuthorCO 2 cycloaddition-
dc.subject.keywordAuthorLewis acid-base-
dc.subject.keywordAuthorCyclic carbonate-
Appears in Collections:
KIST Article > 2022
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