Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.molcata.2008.11.003
DC FieldValue
dc.titleCharacterization and catalytic application of highly dispersed manganese oxides supported on activated carbon
dc.contributor.authorTang, Q.
dc.contributor.authorHuang, X.
dc.contributor.authorChen, Y.
dc.contributor.authorLiu, T.
dc.contributor.authorYang, Y.
dc.date.accessioned2014-12-12T07:30:34Z
dc.date.available2014-12-12T07:30:34Z
dc.date.issued2009-03-18
dc.identifier.citationTang, Q., Huang, X., Chen, Y., Liu, T., Yang, Y. (2009-03-18). Characterization and catalytic application of highly dispersed manganese oxides supported on activated carbon. Journal of Molecular Catalysis A: Chemical 301 (1-2) : 24-30. ScholarBank@NUS Repository. https://doi.org/10.1016/j.molcata.2008.11.003
dc.identifier.issn13811169
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/115633
dc.description.abstractActivated carbon supported manganese oxides (Mn/AC) were prepared by a conventional wet impregnation method using manganese nitrate as the precursor. The nature of supported manganese oxides, e.g., dispersion, oxidation state, local coordination, was characterized by X-ray diffraction (XRD), electron spin resonance (ESR), X-ray absorption near edge structure (XANES), extended X-ray absorption fine structure (EXAFS) spectroscopies, and hydrogen temperature-programmed reduction (H2-TPR). Manganese loading and pretreatment temperature were found to be vital factors in controlling the dispersion and chemical environment of supported manganese oxides. Highly dispersed manganese oxides can be obtained with a Mn loading up to ca. 5 wt.% under modest pretreatment temperatures, whereas large amount of Mn resulted in aggregated MnOx crystalline clusters. The highly dispersed manganese oxides, uniformly distributed on activated carbon surface mainly as coexistence of Mn2+ and Mn3+, have been demonstrated to be catalytically active in the aerobic oxidation of benzyl alcohol using molecular oxygen. Benzyl alcohol conversion as high as 42.5% and over 99% benzaldehyde selectivity can be achieved within 4 h under low reaction temperature (373 K). © 2008 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.molcata.2008.11.003
dc.sourceScopus
dc.subjectActivated carbon
dc.subjectBenzyl alcohol oxidation
dc.subjectManganese oxide
dc.typeArticle
dc.contributor.departmentSINGAPORE SYNCHROTRON LIGHT SOURCE
dc.description.doi10.1016/j.molcata.2008.11.003
dc.description.sourcetitleJournal of Molecular Catalysis A: Chemical
dc.description.volume301
dc.description.issue1-2
dc.description.page24-30
dc.description.codenJMCCF
dc.identifier.isiut000264614500004
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