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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Behavior of chromium oxide on MgO or MgF2

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dc.contributor.author Cho, Dong Hyun ko
dc.contributor.author Yim, Sung Dae ko
dc.contributor.author Cha, Gi Hun ko
dc.contributor.author Lee, Jae Sung ko
dc.contributor.author Kim, Young Gul ko
dc.contributor.author Chung, Jong Shik ko
dc.contributor.author Nam, In-Sik ko
dc.date.available 2015-07-24T06:19:05Z -
dc.date.created 2015-07-24 ko
dc.date.issued 1998-10 -
dc.identifier.citation JOURNAL OF PHYSICAL CHEMISTRY A, v.102, no.41, pp.7913 - 7918 ko
dc.identifier.issn 1089-5639 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/12582 -
dc.identifier.uri http://pubs.acs.org/doi/abs/10.1021/jp981927c ko
dc.description.abstract The molecular structure and oxidation state of the chromium oxide on MgO or MgF2 as a function of Cr loading were determined by XRD, Raman spectroscopy, and XPS. The effects of preparation method and the acidity of support were investigated. The Raman study on a series of chromium oxide supported on MgO prepared by an impregnation method showed that the chromium oxide was present as polychromate independent of Cr loading due to high acidity of the preparation solution. In samples prepared by a precipitation method, the chromium oxide was present as monochromate at 5% Cr loading, as dichromate at 10% Cr loading, and as mono- and polychromate at 20% Cr loading due to a larger surface area of the support prepared by this method. The chromium in CrO3/MgF2 was present as polychromate and monochromate for impregnated and precipitated samples, respectively. The oxidation state of Cr(VI) on MgO is maintained independent of Cr loadings. When the 10 wt % Cr/MgO was calcined at 800 degrees C, MgCr2O4 and Cr2O3 were formed. Preferred formation of MgCr2O4 was observed for the precipitated sample due to its larger surface area compared to that of the impregnated sample ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject RAMAN-SPECTROSCOPIC INVESTIGATIONS ko
dc.subject PHILLIPS POLYMERIZATION CATALYST ko
dc.subject DIFFUSE-REFLECTANCE SPECTROSCOPY ko
dc.subject ETHYLENE POLYMERIZATION ko
dc.subject CRO3/AL2O3 CATALYSTS ko
dc.subject AMBIENT CONDITIONS ko
dc.subject ALUMINA CATALYSTS ko
dc.subject SILICA ko
dc.subject EQUILIBRIUM ko
dc.subject CHEMISTRY ko
dc.title Behavior of chromium oxide on MgO or MgF2 ko
dc.title.alternative Behavior of chromium oxide on MgO or MgF2 ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0000285043 ko
dc.identifier.wosid 000076616800005 ko
dc.type.rims ART ko
dc.description.wostc 19 *
dc.description.scopustc 19 *
dc.description.scopustc 19 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1021/jp981927c ko
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