FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2022072377> ?p ?o ?g. }

• W2022072377 endingPage "176" @default.
• W2022072377 startingPage "166" @default.
• W2022072377 abstract "A series of highly active Fe-BEA iron zeolite catalysts for selective catalytic reduction (SCR) of NOx with ammonia have been prepared by incipient wetness impregnation and aqueous ion exchange with Fe(NO3)3 solutions. While the catalysts were stable during short term hydrothermal ageing, extended periods of ageing did reduce activity. The catalysts were investigated by diffuse reflectance UV–vis spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, ammonia temperature programmed desorption (NH3-TPD), X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS) both ex-situ and in-situ with online gas analysis to measure catalytic activity. UV–vis, EPR and EXAFS showed that low iron loadings (≤1.2 wt.% Fe) resulted in mostly iron monomers, especially for the ion exchanged samples. In contrast a mixture of monomers, oligomers and hematite particles was formed at intermediate to high loadings (2.5–5.1 wt.% Fe). Linear combination analysis of UV–vis spectra, with real spectra and one Gaussian as basis, was used for quantifying the three iron species. A good correlation between iron monomer content and NO conversion was observed. In-situ XANES and EXAFS showed that heating in oxygen atmosphere removes water from the iron coordination sphere and the resultant vacant positions are occupied by NO, NH3 or H2O upon exposing the catalyst to a gas mixture of NO, NH3 and O2 in He. Heating in this gas mixture gave a distinct correlation between the catalytic performance and the oxidation state of iron, which is more pronounced in the catalysts where mostly iron monomers are present. Iron was more partially reduced when the SCR activity increased. These results support a mechanism where the oxidation of iron or NO is the rate-determining step." @default.
• W2022072377 created "2016-06-24" @default.
• W2022072377 creator A5010586732 @default.
• W2022072377 creator A5041676846 @default.
• W2022072377 creator A5070286324 @default.
• W2022072377 creator A5078970742 @default.
• W2022072377 date "2009-11-25" @default.
• W2022072377 modified "2023-10-07" @default.
• W2022072377 title "The role of monomeric iron during the selective catalytic reduction of NOx by NH3 over Fe-BEA zeolite catalysts" @default.
• W2022072377 cites W1532045337 @default.
• W2022072377 cites W1537744442 @default.
• W2022072377 cites W1968703286 @default.
• W2022072377 cites W1974157712 @default.
• W2022072377 cites W1978195001 @default.
• W2022072377 cites W1978257661 @default.
• W2022072377 cites W1983207147 @default.
• W2022072377 cites W1993323885 @default.
• W2022072377 cites W1995653691 @default.
• W2022072377 cites W1998244426 @default.
• W2022072377 cites W2002702060 @default.
• W2022072377 cites W2003157394 @default.
• W2022072377 cites W2007805042 @default.
• W2022072377 cites W2008040521 @default.
• W2022072377 cites W2011388669 @default.
• W2022072377 cites W2011903938 @default.
• W2022072377 cites W2016528335 @default.
• W2022072377 cites W2018525398 @default.
• W2022072377 cites W2021979952 @default.
• W2022072377 cites W2026942959 @default.
• W2022072377 cites W2035279261 @default.
• W2022072377 cites W2036044786 @default.
• W2022072377 cites W2056601358 @default.
• W2022072377 cites W2057458886 @default.
• W2022072377 cites W2058249091 @default.
• W2022072377 cites W2065745217 @default.
• W2022072377 cites W2074270631 @default.
• W2022072377 cites W2077622421 @default.
• W2022072377 cites W2077917573 @default.
• W2022072377 cites W2078338705 @default.
• W2022072377 cites W2080989364 @default.
• W2022072377 cites W2087718384 @default.
• W2022072377 cites W2091116876 @default.
• W2022072377 cites W2111542576 @default.
• W2022072377 cites W2123538429 @default.
• W2022072377 cites W2144937210 @default.
• W2022072377 cites W2162662175 @default.
• W2022072377 cites W2330603823 @default.
• W2022072377 cites W2951987597 @default.
• W2022072377 cites W2952959303 @default.
• W2022072377 cites W437822562 @default.
• W2022072377 cites W594730013 @default.
• W2022072377 doi "https://doi.org/10.1016/j.apcatb.2009.09.026" @default.
• W2022072377 hasPublicationYear "2009" @default.
• W2022072377 type Work @default.
• W2022072377 sameAs 2022072377 @default.
• W2022072377 citedByCount "102" @default.
• W2022072377 countsByYear W20220723772012 @default.
• W2022072377 countsByYear W20220723772013 @default.
• W2022072377 countsByYear W20220723772014 @default.
• W2022072377 countsByYear W20220723772015 @default.
• W2022072377 countsByYear W20220723772016 @default.
• W2022072377 countsByYear W20220723772017 @default.
• W2022072377 countsByYear W20220723772018 @default.
• W2022072377 countsByYear W20220723772019 @default.
• W2022072377 countsByYear W20220723772020 @default.
• W2022072377 countsByYear W20220723772021 @default.
• W2022072377 countsByYear W20220723772022 @default.
• W2022072377 countsByYear W20220723772023 @default.
• W2022072377 crossrefType "journal-article" @default.
• W2022072377 hasAuthorship W2022072377A5010586732 @default.
• W2022072377 hasAuthorship W2022072377A5041676846 @default.
• W2022072377 hasAuthorship W2022072377A5070286324 @default.
• W2022072377 hasAuthorship W2022072377A5078970742 @default.
• W2022072377 hasConcept C105923489 @default.
• W2022072377 hasConcept C107861141 @default.
• W2022072377 hasConcept C110715899 @default.
• W2022072377 hasConcept C118792377 @default.
• W2022072377 hasConcept C119824511 @default.
• W2022072377 hasConcept C121332964 @default.
• W2022072377 hasConcept C147789679 @default.
• W2022072377 hasConcept C150394285 @default.
• W2022072377 hasConcept C156328458 @default.
• W2022072377 hasConcept C15752686 @default.
• W2022072377 hasConcept C161790260 @default.
• W2022072377 hasConcept C162711632 @default.
• W2022072377 hasConcept C178790620 @default.
• W2022072377 hasConcept C179104552 @default.
• W2022072377 hasConcept C185592680 @default.
• W2022072377 hasConcept C187961010 @default.
• W2022072377 hasConcept C199289684 @default.
• W2022072377 hasConcept C203032635 @default.
• W2022072377 hasConcept C2778077586 @default.
• W2022072377 hasConcept C2779131772 @default.
• W2022072377 hasConcept C2780091686 @default.
• W2022072377 hasConcept C32891209 @default.
• W2022072377 hasConcept C46141821 @default.
• W2022072377 hasConcept C62520636 @default.
• W2022072377 hasConcept C65165184 @default.

• next