Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0218-625X(01)00152-X
DC FieldValue
dc.titleXPS and FTIR studies of Mo/ZSM-5 catalysts for nonoxidative conversion of methane to aromatics
dc.contributor.authorChen, H.Y.
dc.contributor.authorTang, S.
dc.contributor.authorZhong, Z.Y.
dc.contributor.authorLin, J.
dc.contributor.authorTan, K.L.
dc.date.accessioned2014-10-16T09:48:56Z
dc.date.available2014-10-16T09:48:56Z
dc.date.issued2001
dc.identifier.citationChen, H.Y., Tang, S., Zhong, Z.Y., Lin, J., Tan, K.L. (2001). XPS and FTIR studies of Mo/ZSM-5 catalysts for nonoxidative conversion of methane to aromatics. Surface Review and Letters 8 (6) : 627-632. ScholarBank@NUS Repository. https://doi.org/10.1016/S0218-625X(01)00152-X
dc.identifier.issn0218625X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98595
dc.description.abstractIn this investigation, several Mo/ZSM-5 catalysts with various Mo loadings and various reaction times were prepared, and methane conversion to aromatics without the presence of oxygen was studied by microreactor evaluation, FTIR and XPS. It was found, for the first time, that oxygen treatment before the reaction could shorten the induction period of this reaction. In situ FTIR study indicated the formation of O2- 2 species (888 cm-1) and O-Al (670 cm-1) on the surface of the catalyst as a result of the oxygen treatment. The two IR bands shifted to 854 and 659 cm-1 respectively when 18O2 was used. These oxygen species may take part in the initial reaction and shorten the induction time. The XPS study revealed the coexistence of Mo2C and MoO3 species on working catalyst surfaces, and a proper Mo2C/MoO3 ratio (∼ 0.38) was identified for the best aromatization Mo/ZSM-5 catalyst. The active sites for methane conversion to aromatics should include Mo oxide as well as Mo carbide.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0218-625X(01)00152-X
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1016/S0218-625X(01)00152-X
dc.description.sourcetitleSurface Review and Letters
dc.description.volume8
dc.description.issue6
dc.description.page627-632
dc.description.codenSRLEF
dc.identifier.isiut000173718400005
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