Effect of Ag loading on praseodymium doped ceria catalyst for soot oxidation activity

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dc.contributor.authorGovardhan, P.
dc.contributor.authorAnjana, A.P.
dc.contributor.authorPatil, S.S.
dc.contributor.authorPrasad Dasari, H.P.
dc.contributor.authorHarshini, H.
dc.contributor.authorShourya, A.
dc.date.accessioned2026-02-04T12:28:17Z
dc.date.issued2022
dc.description.abstractSilver-loaded praseodymium doped ceria (XAg/PDC) was synthesized by microwave-assisted co-precipitation and wetness impregnation. XRD confirms the fluorite structure of ceria without secondary phase, and Raman spectroscopy represents the increased generation of oxygen vacancies with Ag loading. The TEM analysis shows lattice fringes corresponding to both CeO<inf>2</inf> and Ag on the surface. The BET and BJH analysis of catalyst confirms the high porosity accompanied by high surface area and pore diameter of 5Ag/PDC and 15Ag/PDC, making it more active for the oxidation reaction. From the XPS analysis the amount of surface Ce3+ concentration and the surface chemisorbed oxygen species (O<inf>2</inf> 2) is high for 5Ag/PDC and 15Ag/PDC, in line with XRD and Raman results. The soot oxidation T<inf>50</inf> temperature follows the trend: 5Ag/PDC∼15Ag/PDC<10Ag/PDC<20Ag/PDC<0Ag/PDC. The Ag loading increased the surface reducibility of cerium ions and thus 5 wt% was optimized. © 2021, The Korean Institute of Chemical Engineers.
dc.identifier.citationKorean Journal of Chemical Engineering, 2022, 39, 2, pp. 328-342
dc.identifier.issn2561115
dc.identifier.urihttps://doi.org/10.1007/s11814-021-0933-y
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/22681
dc.publisherSpringer
dc.subjectAg Loading
dc.subjectOxygen Vacancies
dc.subjectPraseodymium-doped Ceria (PDC)
dc.subjectReducibility Microwave-assisted Co-precipitation
dc.subjectSoot Oxidation Activity
dc.titleEffect of Ag loading on praseodymium doped ceria catalyst for soot oxidation activity

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