Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034414145> ?p ?o ?g. }
- W2034414145 endingPage "114" @default.
- W2034414145 startingPage "106" @default.
- W2034414145 abstract "PGM–CeO2 (PGM = Pt, Pd, Ir, Rh, Ru) catalysts were prepared by one-step solution combustion synthesis (SCS) and characterized by elemental analysis, N2 volumetry, aberration-corrected HRTEM, X-ray diffraction, and CO-DRIFTS. The samples, consisting of 2–6 nm metal nanoparticles supported on mesoporous ceria, were tested in CO oxidation in absence and presence of hydrogen (PROX). To our knowledge, this work presents the first comparison of all the platinum-group metals (except Os) for these reactions in the same conditions. The as-prepared SCS catalysts are active in CO oxidation and a reducing treatment has no significant effect on their performances. While the best catalyst in H2-free CO oxidation is Rh–CeO2, the addition of a high hydrogen excess decreases the Rh catalyst activity but enhances the CO oxidation rate on all other systems, including alumina-supported metals employed as reference catalysts. The resulting PROX turnover frequencies (Pt > Pd > Rh > Ir > Ru) follow the trends predicted by published density-functional-theory calculations considering the COad + Oad elementary reaction as the rate-determining step. Pt–CeO2 is not only the most active but also the most selective catalyst, reaching near 100% CO2 at low temperature (ca. 100 °C). The alumina-supported catalysts appeared less active than their ceria-supported counterparts in both reactions. The effect of heating/cooling cycles on the reaction kinetics was also investigated. Whereas the Pt, Pd and Ir ceria-supported catalysts were stable throughout PROX cycles, Rh and Ru ones exhibited apparently chaotic behaviors above ca. 200 °C, which are proposed to be induced by favorable CO dissociation and methanation pathways and/or variable metal oxidation states." @default.
- W2034414145 created "2016-06-24" @default.
- W2034414145 creator A5004110116 @default.
- W2034414145 creator A5005822467 @default.
- W2034414145 creator A5016945436 @default.
- W2034414145 creator A5017946888 @default.
- W2034414145 creator A5040224847 @default.
- W2034414145 creator A5085623981 @default.
- W2034414145 date "2015-09-01" @default.
- W2034414145 modified "2023-10-11" @default.
- W2034414145 title "Trends in the CO oxidation and PROX performances of the platinum-group metals supported on ceria" @default.
- W2034414145 cites W141843092 @default.
- W2034414145 cites W188594488 @default.
- W2034414145 cites W1964178368 @default.
- W2034414145 cites W1966955959 @default.
- W2034414145 cites W1967211160 @default.
- W2034414145 cites W1967554938 @default.
- W2034414145 cites W1968574371 @default.
- W2034414145 cites W1970072761 @default.
- W2034414145 cites W1975543713 @default.
- W2034414145 cites W1976310442 @default.
- W2034414145 cites W1977187595 @default.
- W2034414145 cites W1980704616 @default.
- W2034414145 cites W1980818619 @default.
- W2034414145 cites W1981331485 @default.
- W2034414145 cites W1993417369 @default.
- W2034414145 cites W1996707709 @default.
- W2034414145 cites W1998625001 @default.
- W2034414145 cites W1998973717 @default.
- W2034414145 cites W2001707535 @default.
- W2034414145 cites W2002091475 @default.
- W2034414145 cites W2003320418 @default.
- W2034414145 cites W2007490608 @default.
- W2034414145 cites W2011509022 @default.
- W2034414145 cites W2012143770 @default.
- W2034414145 cites W2012824584 @default.
- W2034414145 cites W2016458956 @default.
- W2034414145 cites W2017142466 @default.
- W2034414145 cites W2020239677 @default.
- W2034414145 cites W2022740229 @default.
- W2034414145 cites W2024900356 @default.
- W2034414145 cites W2025103424 @default.
- W2034414145 cites W2028795666 @default.
- W2034414145 cites W2030167197 @default.
- W2034414145 cites W2044139080 @default.
- W2034414145 cites W2045503903 @default.
- W2034414145 cites W2047965539 @default.
- W2034414145 cites W2049560296 @default.
- W2034414145 cites W2055452160 @default.
- W2034414145 cites W2056410251 @default.
- W2034414145 cites W2056541245 @default.
- W2034414145 cites W2058067785 @default.
- W2034414145 cites W2059715814 @default.
- W2034414145 cites W2061434539 @default.
- W2034414145 cites W2063619209 @default.
- W2034414145 cites W2066765759 @default.
- W2034414145 cites W2067237447 @default.
- W2034414145 cites W2074347425 @default.
- W2034414145 cites W2075924763 @default.
- W2034414145 cites W2078371287 @default.
- W2034414145 cites W2084217420 @default.
- W2034414145 cites W2084628374 @default.
- W2034414145 cites W2089467325 @default.
- W2034414145 cites W2089592491 @default.
- W2034414145 cites W2104644286 @default.
- W2034414145 cites W2108846935 @default.
- W2034414145 cites W2112959450 @default.
- W2034414145 cites W2116106187 @default.
- W2034414145 cites W2135136814 @default.
- W2034414145 cites W2141939081 @default.
- W2034414145 cites W2154746844 @default.
- W2034414145 cites W2155521255 @default.
- W2034414145 cites W2167590372 @default.
- W2034414145 cites W2312517905 @default.
- W2034414145 cites W2322718557 @default.
- W2034414145 cites W69440826 @default.
- W2034414145 doi "https://doi.org/10.1016/j.cattod.2014.12.038" @default.
- W2034414145 hasPublicationYear "2015" @default.
- W2034414145 type Work @default.
- W2034414145 sameAs 2034414145 @default.
- W2034414145 citedByCount "70" @default.
- W2034414145 countsByYear W20344141452015 @default.
- W2034414145 countsByYear W20344141452016 @default.
- W2034414145 countsByYear W20344141452017 @default.
- W2034414145 countsByYear W20344141452018 @default.
- W2034414145 countsByYear W20344141452019 @default.
- W2034414145 countsByYear W20344141452020 @default.
- W2034414145 countsByYear W20344141452021 @default.
- W2034414145 countsByYear W20344141452022 @default.
- W2034414145 countsByYear W20344141452023 @default.
- W2034414145 crossrefType "journal-article" @default.
- W2034414145 hasAuthorship W2034414145A5004110116 @default.
- W2034414145 hasAuthorship W2034414145A5005822467 @default.
- W2034414145 hasAuthorship W2034414145A5016945436 @default.
- W2034414145 hasAuthorship W2034414145A5017946888 @default.
- W2034414145 hasAuthorship W2034414145A5040224847 @default.
- W2034414145 hasAuthorship W2034414145A5085623981 @default.
- W2034414145 hasBestOaLocation W20344141452 @default.