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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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NEXAFS spectroscopy study of the surface properties of zinc glutarate and its reactivity with carbon dioxide and propylene oxide

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dc.contributor.author Kim, JS ko
dc.contributor.author Ree, M ko
dc.contributor.author Lee, SW ko
dc.contributor.author Oh, W ko
dc.contributor.author Baek, S ko
dc.contributor.author Lee, B ko
dc.contributor.author Shin, Tae Joo ko
dc.contributor.author Kim, KJ ko
dc.contributor.author Kim, B ko
dc.contributor.author Luning, J ko
dc.date.available 2015-09-04T02:17:18Z -
dc.date.created 2015-09-04 ko
dc.date.issued 2003-09 -
dc.identifier.citation JOURNAL OF CATALYSIS, v.218, no.2, pp.386 - 395 ko
dc.identifier.issn 0021-9517 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/16634 -
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S0021951703001222 ko
dc.description.abstract The surface state of polycrystalline zinc glutarate (ZnGA) catalyst and its catalytic adsorption of carbon dioxide (CO2) and propylene oxide (PO) were investigated by using near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The outermost layer of ZnGA catalyst was found to contain more hydrocarbon units (i.e., glutarate ligand component) than the inner layers. The ZnGA catalyst was found to reversibly react with CO2 and to readily react with PO via adsorption onto the catalyst surface and insertion into the Zn-O bond. Experiments in which the catalyst was treated with CO2 followed by PO and vice versa showed that each of these components can replace the other component on the catalyst surface. This reversible adsorption and insertion of CO2 and PO on the ZnGA surface provides a clue to the mechanism underlying the production of alternating poly(propylene carbonate) in the ZnGA-catalyzed copolymerization of CO2 and PO. However, in comparison to CO2, PO was more easily adsorbed onto the ZnGA catalyst and inserted into the Zn-O bond. As a consequence, PO significantly modified the catalyst surface. This suggests that the ZnGA-catalyzed copolymerization is initiated by PO rather than CO2. (C) 2003 Elsevier Inc. All rights reserved ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ACADEMIC PRESS INC ELSEVIER SCIENCE ko
dc.subject Zinc glutarate catalyst ko
dc.subject NEXAFS ko
dc.subject Copolymerization of CO2 with propylene oxide ko
dc.title NEXAFS spectroscopy study of the surface properties of zinc glutarate and its reactivity with carbon dioxide and propylene oxide ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0041632345 ko
dc.identifier.wosid 000184372600016 ko
dc.type.rims ART ko
dc.description.wostc 40 *
dc.description.scopustc 47 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1016/S0021-9517(03)00122-2 ko
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