Spectroscopic investigation of sulfur-resistant Pt/K2O/ZrO2/TiO2/Al2O3 NSR/LNT catalysts

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dc.citation.epage176en_US
dc.citation.spage167en_US
dc.citation.volumeNumber267en_US
dc.contributor.authorSay, Z.en_US
dc.contributor.authorTohumeken, M.en_US
dc.contributor.authorOzensoy, E.en_US
dc.date.accessioned2018-04-12T10:55:56Z
dc.date.available2018-04-12T10:55:56Z
dc.date.issued2016en_US
dc.departmentDepartment of Chemistryen_US
dc.description.abstractAn alternative ternary support oxide material and its K2O and Pt functionalized counterparts in the form of Pt/K2O/Al2O3/ZrO2/TiO2 with different K2O loadings were synthesized. Structural and morphological properties of the catalysts were characterized via XRD and BET techniques in comparison to a conventional Pt/20Ba/Al benchmark NSR/LNT catalyst. Comprehensive in-situ FTIR and TPD analysis revealed that increasing the K2O loading in the Pt/K2O/AZT system leads to an increase in NOx Storage Capacity (NSC) at the expense of the formation of bulk-like sulfates requiring higher temperature for complete sulfur elimination with H2(g). Observed delicate trade-off between NSC and sulfur poisoning tendencies of the currently investigated family of AZT-based NSR/LNT catalysts implies that Pt/5.4K2O/AZT is a promising catalyst revealing comparable NSC within the temperature range of 473-673 K to that of the conventional Pt/20Ba/Al benchmark catalyst, while exhibiting superior sulfur tolerance and regeneration characteristics.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:55:56Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1016/j.cattod.2015.12.013en_US
dc.identifier.eissn1873-4308
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/11693/36868
dc.language.isoEnglishen_US
dc.publisherElsevier BVen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.cattod.2015.12.013en_US
dc.source.titleCatalysis Todayen_US
dc.subjectDeNOx Al2O3/ZrO2/TiO2en_US
dc.subjectFTIRen_US
dc.subjectNSR/LNTen_US
dc.subjectTPDen_US
dc.titleSpectroscopic investigation of sulfur-resistant Pt/K2O/ZrO2/TiO2/Al2O3 NSR/LNT catalystsen_US
dc.typeArticleen_US

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