PUMA publications for /user/danieldobesch/buehnerhttps://puma.ub.uni-stuttgart.de/user/danieldobesch/buehnerPUMA RSS feed for /user/danieldobesch/buehner2024-03-29T10:58:02+01:00Hysteresis Phenomena on Platinum and Palladium-based Diesel Oxidation Catalysts (DOCs)https://puma.ub.uni-stuttgart.de/bibtex/2a4fce8e7ec0f9b6a8fd17a4983c7cd1c/danieldobeschdanieldobesch2018-09-27T16:23:39+02:00buehner dubbe eigenberger icvt journal nieken <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="H. Dubbe" itemprop="url" href="/person/1f8ada25ac189971ea64d7f00f9f5d5b5/author/0"><span itemprop="name">H. Dubbe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="F. Bühner" itemprop="url" href="/person/1f8ada25ac189971ea64d7f00f9f5d5b5/author/1"><span itemprop="name">F. Bühner</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="G. Eigenberger" itemprop="url" href="/person/1f8ada25ac189971ea64d7f00f9f5d5b5/author/2"><span itemprop="name">G. Eigenberger</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/1f8ada25ac189971ea64d7f00f9f5d5b5/author/3"><span itemprop="name">U. Nieken</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Emission Control Science and Technology</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">2 </span></span>(<span itemprop="issueNumber">3</span>):
<span itemprop="pagination">137--144</span></em> </span>(<em><span>Jul 1, 2016<meta content="Jul 1, 2016" itemprop="datePublished"/></span></em>)</span>Thu Sep 27 16:23:39 CEST 2018Emission Control Science and Technologyjul3137--144Hysteresis Phenomena on Platinum and Palladium-based Diesel Oxidation Catalysts (DOCs)22016buehner dubbe eigenberger icvt journal nieken 01The diesel oxidation catalyst (DOC) plays a key role in diesel exhaust treatment systems. Typical noble metals used as active components are platinum (Pt) and palladium (Pd). During lightoff/lightout experiments, the catalyst reactivity during heating is in some cases different from the reactivity during cooling in the same reaction mixture. These so called hysteresis phenomena have repeatedly been reported for CO, NO, and HC conversion and are mostly attributed to noble metal oxidation and/or surface coverage effects. Hauff et al. have developed a kinetic model that is able to account for the hysteresis effects observed in NO conversion on Pt-only catalysts due to noble metal oxidation. The model was only validated for a limited range of NO concentrations and temperatures. In this follow-up, further experiments on Pt-only as well as on Pd-only catalysts will be presented for additional feed compositions. General transferability of the Pt-only model to Pd-only catalysts for NO-only is demonstrated. By addition of CO and propene to the feed, additional hysteresis phenomena are observed and will be discussed. On Pd--only, results indicate that under lean exhaust conditions, the noble metal can only be slightly reduced by CO. Interestingly, with a mix of CO and NO no reactivation is observed whereas the combination of CO, NO, and propene again shows reducing tendency. Based on these informations, a possible modeling approach will be proposed.Hysteresis Phenomena on Platinum and Palladium based Diesel Oxidation Catalysts (DOCs)https://puma.ub.uni-stuttgart.de/bibtex/2c46d707d05bcfb9370b2fafa1c225a07/danieldobeschdanieldobesch2018-09-27T17:10:44+02:00buehner dubbe icvt poster <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="H. Dubbe" itemprop="url" href="/person/11041f10ea1739a50f767527fb3de1184/author/0"><span itemprop="name">H. Dubbe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="F. Bühner" itemprop="url" href="/person/11041f10ea1739a50f767527fb3de1184/author/1"><span itemprop="name">F. Bühner</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="G. Eigenberger" itemprop="url" href="/person/11041f10ea1739a50f767527fb3de1184/author/2"><span itemprop="name">G. Eigenberger</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/11041f10ea1739a50f767527fb3de1184/author/3"><span itemprop="name">U. Nieken</span></a></span></span>. </span><span class="additional-entrytype-information">(<em><span>2015<meta content="2015" itemprop="datePublished"/></span></em>)<em>Poster, 4th International Symposium on Modeling of Exhaust-Gas After-Treatment – MODEGAT IV, 13.09.-15.09.2015, Bad Herrenalb, Germany.</em></span>Thu Sep 27 17:10:44 CEST 20184th International Symposium on Modeling of Exhaust-Gas After-Treatment – MODEGAT IV, 13.09.-15.09.2015, Bad Herrenalb, GermanyPoster, 4th International Symposium on Modeling of Exhaust-Gas After-Treatment – MODEGAT IV, 13.09.-15.09.2015, Bad Herrenalb, GermanyHysteresis Phenomena on Platinum and Palladium based Diesel Oxidation Catalysts (DOCs)2015buehner dubbe icvt poster Rapid Estimation of NO Oxidation Kinetic Data from Experimentshttps://puma.ub.uni-stuttgart.de/bibtex/2d2958a912c2c4ca67acb1b543be3ebb6/danieldobeschdanieldobesch2018-11-05T13:12:53+01:00buehner dubbe icvt journal nieken <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Hendrik Dubbe" itemprop="url" href="/person/1c21438e05d6a90a343f4dcd1b3ae79af/author/0"><span itemprop="name">H. Dubbe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Florian Bühner" itemprop="url" href="/person/1c21438e05d6a90a343f4dcd1b3ae79af/author/1"><span itemprop="name">F. Bühner</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Ulrich Nieken" itemprop="url" href="/person/1c21438e05d6a90a343f4dcd1b3ae79af/author/2"><span itemprop="name">U. Nieken</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Chemie Ingenieur Technik</span>, </em> </span>(<em><span>2019<meta content="2019" itemprop="datePublished"/></span></em>)</span>Mon Nov 05 13:12:53 CET 2018Chemie Ingenieur TechnikRapid Estimation of NO Oxidation Kinetic Data from Experiments912019buehner dubbe icvt journal nieken Parameter estimation for Langmuir-Hinshelwood/Hougen-Watson type of kinetics in the field of automotive exhaust gas
aftertreatment can be challenging as a great variety of parameter sets can result in a similar model quality as rate and
inhibition parameters can interact during numerical optimization although they can be regarded independent from theory.
This contribution introduces a method that enables the model-based rapid estimation of NO oxidation kinetic informa-
tion on a Pt-only monolith catalyst from a straightforward set of synthesis gas test-bench experiments.Development of an online-method to measure nanoparticle agglomerate stabilityhttps://puma.ub.uni-stuttgart.de/bibtex/2b2445dc1c4ddfb784d92477c5f667991/danieldobeschdanieldobesch2020-09-21T09:47:19+02:00buehner icvt poster <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Florian Bühner" itemprop="url" href="/person/10204a7562b216eb59b04bb7d067aff17/author/0"><span itemprop="name">F. Bühner</span></a></span></span>. </span><span class="additional-entrytype-information">(<em><span>2020<meta content="2020" itemprop="datePublished"/></span></em>)<em>Poster, European Aerosol Conference, 31.08. - 04.09.2020, Aachen.</em></span>Mon Sep 21 09:47:19 CEST 2020European Aerosol Conference, 31.08. - 04.09.2020, AachenPoster, European Aerosol Conference, 31.08. - 04.09.2020, AachenDevelopment of an online-method to measure nanoparticle agglomerate stability2020buehner icvt poster Entwicklung einer online-Methode zur Messung der Festigkeit von Nanopartikel- agglomeraten im Prozesshttps://puma.ub.uni-stuttgart.de/bibtex/2a671574b652ba010e4992db219a3f380/danieldobeschdanieldobesch2020-09-25T12:12:14+02:00buehner icvt vortrag <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Florian Bühner" itemprop="url" href="/person/17a1348846d3a4514661ccf1c05e66edd/author/0"><span itemprop="name">F. Bühner</span></a></span></span>. </span><span class="additional-entrytype-information">(<em><span>2019<meta content="2019" itemprop="datePublished"/></span></em>)<em>Presentation,Jahrestreffen der ProcessNet-Fachgruppen Partikelmesstechnik und Aerosoltechnologie, 06.03. - 07.03.2019, Frankfurt.</em></span>Fri Sep 25 12:12:14 CEST 2020Jahrestreffen der ProcessNet-Fachgruppen Partikelmesstechnik und Aerosoltechnologie, 06.03. - 07.03.2019, FrankfurtPresentation,Jahrestreffen der ProcessNet-Fachgruppen Partikelmesstechnik und Aerosoltechnologie, 06.03. - 07.03.2019, FrankfurtEntwicklung einer online-Methode zur Messung der Festigkeit von Nanopartikel- agglomeraten im Prozess2019buehner icvt vortrag