Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Umberto Iacobone"'
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Akademický článek
Appraising Multinuclear Cu2+ Structure Formation in Cu‐CHA SCR Catalysts via Low‐T Dry CO Oxidation with Modulated NH3 Solvation
Autor: Umberto Iacobone, Prof. Dr. Isabella Nova, Prof. Dr. Enrico Tronconi, Dr. Roberta Villamaina, Dr. Maria Pia Ruggeri, Dr. Jillian Collier, Dr. David Thompsett
Publikováno v: ChemistryOpen, Vol 11, Iss 9, Pp n/a-n/a (2022)
Abstract Cu2+ ions (ZCu2+(OH)−, Z2Cu2+) are regarded as the NH3‐SCR (SCR=selective catalytic reduction) active site precursors of Cu‐exchanged chabazite (CHA) which is among the best available catalysts for the abatement of NOx from Diesel engi
Externí odkaz: https://doaj.org/article/8ef8a3376cb94a098da3fd46d79e73ec
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Transient CO Oxidation as a Versatile Technique to Investigate Cu2+ Titration, Speciation and Sites Hydrolysis on Cu–CHA Catalysts: The Cu Loading Effect
Autor: Umberto Iacobone, Isabella Nova, Enrico Tronconi, Roberta Villamaina, Maria Pia Ruggeri, Jillian Collier, David Thompsett
Publikováno v: Topics in Catalysis.
The investigation of the ZCu2+(OH)− and Z2Cu2+ ions modifications during NH3-SCR on Cu–CHA catalysts is a key aspect to clarify the still-debated low-T redox SCR mechanism. In previous works, the dry transient CO oxidation protocol has been emplo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31336c90797e7ff90198d5a929e30154
https://doi.org/10.1007/s11244-023-01813-8
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Transient Kinetic Analysis of Low-Temperature NH3-SCR over Cu-CHA Catalysts Reveals a Quadratic Dependence of Cu Reduction Rates on CuII
Autor: Shaojun Liu, Umberto Iacobone, Nicola Usberti, Federica Gramigni, Xiang Gao, Wenshuo Hu, Nicole Daniela Nasello, Enrico Tronconi, Isabella Nova, Tommaso Selleri
Publikováno v: ACS Catalysis. 11:4821-4831
We combine gas phase Transient Response Methods with Transient Kinetic Analysis to investigate the reduction half-cycle (RHC: CuII → CuI) of the Standard SCR redox mechanism over Cu-CHA (chabazite)...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a79ec325452fbca5e0a793b4c81dc5d
https://doi.org/10.1021/acscatal.0c05362
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The H2O Effect on Cu Speciation in Cu-CHA-Catalysts for NH3-SCR Probed by NH3 Titration
Autor: Enrico Tronconi, Andrew P. E. York, Roberta Villamaina, Umberto Iacobone, Jillian Elaine Collier, Shaojun Liu, Maria Pia Ruggeri, Isabella Nova, David Thompsett, Federica Gramigni
Publikováno v: Catalysts, Vol 11, Iss 759, p 759 (2021)
Catalysts
Volume 11
Issue 7
The present work is focused on the effect of water on NH3 adsorption over Cu-CHA SCR catalysts. For this purpose, samples characterized by different SAR (SiO2/Al2O3) ratios and Cu loadings were studied under both dry and wet conditions. H2O adversely
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::642faa3c97deebfa3465d8f776e1cf3b
https://www.mdpi.com/2073-4344/11/7/759
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Mechanistic insight in NO trapping on Pd/Chabazite systems for the low-temperature NOx removal from Diesel exhausts
Autor: Jillian Elaine Collier, Roberta Villamaina, Maria Pia Ruggeri, Umberto Iacobone, Enrico Tronconi, David Thompsett, Isabella Nova, Loredana Mantarosie
Publikováno v: Applied Catalysis B: Environmental. 284:119724
We have applied transient response methods to study Pd-CHA systems as Passive NOx Adsorbers (PNA) for the low-temperature NOx removal from Diesel exhausts. NO adsorption/TPD experiments were carried out at different temperatures in gaseous mixtures c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a2fe9bc51be32d19657295dae16da0b
https://doi.org/10.1016/j.apcatb.2020.119724
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