Zobrazeno 1 - 10 of 29 pro vyhledávání: '"Kevin Keller"'
1
Experimental and numerical investigation of NO oxidation on Pt/Al2O3- and NOx storage on Pt/BaO/Al2O3-catalysts
Autor: Sui Wan, Kevin Keller, Patrick Lott, Akash Bhimrao Shirsath, Steffen Tischer, Thomas Häber, Rainer Suntz, Olaf Deutschmann
Publikováno v: Catalysis Science & Technology. 12:4456-4470
Effects of temperature and inlet conditions on NO oxidation and NOx storage, as well as reduced NOx storage capacity over time – reflected by changes of measured NO concentration, which are reproduced by CFD using detailed reaction mechanisms.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::155926042510d22c15232845d3bd9fb2
https://doi.org/10.1039/d2cy00572g
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2
Automating the Optimization of Catalytic Reaction Mechanism Parameters Using Basin-Hopping: A Proof of Concept
Autor: Rinu Chacko, Kevin Keller, Steffen Tischer, Akash B. Shirsath, Patrick Lott, Sofia Angeli, Olaf Deutschmann
Publikováno v: The Journal of Physical Chemistry C, 127 (16), 7628–7639
Parameter estimation is a crucial step for successful microkinetic modeling in catalysis. However, the large number of parameters to be optimized in order to match the experimental data is a bottleneck. In this regard, the global optimization algorit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08ef90227766f2907551fb95a2388645
https://publikationen.bibliothek.kit.edu/1000158622/150791930
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3
Methane Oxidation over PdO: Towards a Better Understanding of the Influence of the Support Material
Autor: Kevin Keller, Patrick Lott, Steffen Tischer, Maria Casapu, Jan‐Dierk Grunwaldt, Olaf Deutschmann
Publikováno v: ChemCatChem, 15 (11), Art.-Nr.: e202300366
The presence of water vapor during the oxidation of the strong greenhouse gas methane over PdO-based catalysts is known to result in severe inhibition and catalyst deactivation. In this context, our current study elucidates the role of the support ma
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8976ea048bdbf158d00faeedda6d6f89
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5
Selective Catalytic Reduction of NOx with H2 for Cleaning Exhausts of Hydrogen Engines: Impact of H2O, O2, and NO/H2 Ratio
Autor: Kevin Keller, Michael Borchers, Olaf Deutschmann, Patrick Lott
Publikováno v: Industrial & Engineering Chemistry Research. 60:6613-6626
A key concept for hydrogen-fueled internal combustion engines is reducing NOₓ emissions with direct H₂-SCR. Besides platinum as an active noble metal component, palladium-based catalysts are attractive for NO reduction with high selectivity. Howe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ecfc27891447827ccde322f6d5caa9d
https://doi.org/10.1021/acs.iecr.0c05630
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6
The effect of the phenylene linkage in poly(fluorene-alt-phenylene)s on the thermodynamics and kinetics of nitroaromatic and nitroaliphatic sensing
Autor: Lukas Willig, Mei Gao, Ami Koizumi, Hsuan Ming Hu, Marina Fuhrer, Toby D. M. Bell, George Vamvounis, Kevin Keller
Publikováno v: European Polymer Journal. 119:551-558
The preparation, photophysical characterization and sensing of a series of highly luminescent poly(fluorene-alt-phenylene)s (PFP) were studied. These PFP polymers varied the phenylene linkage in the 1,4 (PFP-p), 1,3 (PFP-m) and 1,2 (PFP-o) positions.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f45766aa9809c566bbb579ca0d934695
https://doi.org/10.1016/j.eurpolymj.2019.06.040
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7
Access and Adoption of Hybrid Seeds: Evidence from Uganda
Autor: Kevin Leiby, Paul J. Wang, Dan J. Stein, Kevin Keller, Nikolaus Axmann, Torben Fischer
Publikováno v: Journal of African Economies. 29:215-235
Adoption of hybrid seeds remains low in many low-income countries. We conduct a field-experiment designed to measure the effect of offering hybrid maize seeds for purchase during a time when potential customers have high liquidity. Working with a lar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8c2a0216b9a2488f9a08f9259f4e354
https://doi.org/10.1093/jae/ejz019
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9
Microkinetic Modeling of the Oxidation of Methane Over PdO Catalysts—Towards a Better Understanding of the Water Inhibition Effect
Autor: Deutschmann, Kevin Keller, Patrick Lott, Henning Stotz, Lubow Maier, Olaf
Publikováno v: Catalysts; Volume 10; Issue 8; Pages: 922
Water, which is an intrinsic part of the exhaust gas of combustion engines, strongly inhibits the methane oxidation reaction over palladium oxide-based catalysts under lean conditions and leads to severe catalyst deactivation. In this combined experi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=multidiscipl::930ccc2e522bd5813f3b06c2bd404312
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10
Absence of electrocardiographic left ventricular hypertrophy in patients undergoing Transcatheter aortic valve replacement is associated with increased mortality
Autor: Yulei Cao, Emily Xiao, Robert S Zhang, Mikhail Torosoff, Angelo de la Rosa, Mohammad El-Hajjar, Stephanie Jou, Kevin Keller, Augustin Delago
Publikováno v: Journal of electrocardiology. 63
Background We examined the association between the absence ECG LVH and all-cause mortality in patients with severe AS undergoing TAVR. Methods We conducted a retrospective single center study on 399 TAVR patients from 2012 to 2016. ECGs were reviewed
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ce70d6bda8b60b4af634da975adbb33
https://pubmed.ncbi.nlm.nih.gov/33017756
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