Physicochemical properties of manganese dioxide synthesized using C2–C5 alcohols as reducing agents and their catalytic activities for CO oxidation

Handle URI:
http://hdl.handle.net/10754/579545
Title:
Physicochemical properties of manganese dioxide synthesized using C2–C5 alcohols as reducing agents and their catalytic activities for CO oxidation
Authors:
Lee, Young-Ho; Park, Jung-Hyun ( 0000-0002-3714-2251 ) ; Shin, Chae-Ho
Abstract:
MnO2 catalysts were synthesized in an aqueous solution of KMnO4 and C2–C5 alcohols using a simple redox method at room temperature. The crystalline structure of all samples was δ-MnO2 after being calcined at 300 °C. However, other physicochemical properties of the samples varied depending on the symmetry of the alcohols used. For the catalytic oxidation of CO, MnO2 catalysts prepared with 1° alcohols performed better than the samples prepared in 2° alcohols. Catalytic activities were correlated to the quantity of labile oxygen species of the catalysts. In CO-TPD analysis, the relative area of desorbed radical dotCO2, which is the product of the reaction between adsorbed CO and lattice oxygen species, becomes larger for MnO2 prepared with 1° alcohols than with 2° alcohols. These results were primarily resulted from the innate hydrogen dissociation behavior of alcohol in solution. The pKa was found to be an important factor in determining the physicochemical properties and catalytic activity toward CO oxidation of MnO2.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
Catalysis Today
Issue Date:
26-Sep-2015
DOI:
10.1016/j.cattod.2015.08.032
Type:
Article
ISSN:
0920-5861
Additional Links:
http://www.sciencedirect.com/science/article/pii/S092058611500512X
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLee, Young-Hoen
dc.contributor.authorPark, Jung-Hyunen
dc.contributor.authorShin, Chae-Hoen
dc.date.accessioned2015-10-12T05:34:38Zen
dc.date.available2015-10-12T05:34:38Zen
dc.date.issued2015-09-26en
dc.identifier.issn0920-5861en
dc.identifier.doi10.1016/j.cattod.2015.08.032en
dc.identifier.urihttp://hdl.handle.net/10754/579545en
dc.description.abstractMnO2 catalysts were synthesized in an aqueous solution of KMnO4 and C2–C5 alcohols using a simple redox method at room temperature. The crystalline structure of all samples was δ-MnO2 after being calcined at 300 °C. However, other physicochemical properties of the samples varied depending on the symmetry of the alcohols used. For the catalytic oxidation of CO, MnO2 catalysts prepared with 1° alcohols performed better than the samples prepared in 2° alcohols. Catalytic activities were correlated to the quantity of labile oxygen species of the catalysts. In CO-TPD analysis, the relative area of desorbed radical dotCO2, which is the product of the reaction between adsorbed CO and lattice oxygen species, becomes larger for MnO2 prepared with 1° alcohols than with 2° alcohols. These results were primarily resulted from the innate hydrogen dissociation behavior of alcohol in solution. The pKa was found to be an important factor in determining the physicochemical properties and catalytic activity toward CO oxidation of MnO2.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S092058611500512Xen
dc.subjectMnO2en
dc.subjectAlcoholen
dc.subjectpKaen
dc.subjectLattice oxygen speciesen
dc.subjectCO oxidationen
dc.titlePhysicochemical properties of manganese dioxide synthesized using C2–C5 alcohols as reducing agents and their catalytic activities for CO oxidationen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalCatalysis Todayen
dc.eprint.versionPost-printen
dc.contributor.institutionChemical Engineering, Chungbuk National University, Cheongju 28644, Republic of Koreaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorPark, Jung-Hyunen
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