PUMA publications for /tag/eigenbergerhttps://puma.ub.uni-stuttgart.de/tag/eigenbergerPUMA RSS feed for /tag/eigenberger2024-03-29T16:50:25+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> und <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>01.07.2016<meta content="01.07.2016" 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 Pt- and Pd-Diesel Oxidation Catalysts: Experimental Observationshttps://puma.ub.uni-stuttgart.de/bibtex/244a0e0e10dbecc98efb47b720aa91515/danieldobeschdanieldobesch2018-09-27T16:22:10+02:00dubbe 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/1cac1bcaeb28394d98f29777db1902c5c/author/0"><span itemprop="name">H. Dubbe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="G. Eigenberger" itemprop="url" href="/person/1cac1bcaeb28394d98f29777db1902c5c/author/1"><span itemprop="name">G. Eigenberger</span></a></span>, </span> und <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/1cac1bcaeb28394d98f29777db1902c5c/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">Topics in Catalysis</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">59 </span></span>(<span itemprop="issueNumber">10</span>):
<span itemprop="pagination">1054--1058</span></em> </span>(<em><span>01.07.2016<meta content="01.07.2016" itemprop="datePublished"/></span></em>)</span>Thu Sep 27 16:22:10 CEST 2018Topics in Catalysisjul101054--1058Hysteresis Phenomena on Pt- and Pd-Diesel Oxidation Catalysts: Experimental Observations592016dubbe eigenberger icvt journal nieken 01In Diesel Oxidation Catalysts (DOC) platinum (Pt), palladium (Pd), or a combination of both (alloyed or multilayered) are the typical active components. During lightoff/lightout experiments, hysteresis phenomena of CO, NO, and HC conversion have repeatedly been reported and attributed to thermal effects, to surface coverage effects and/or to noble metal oxidation. A detailed understanding of the causes of these hysteresis phenomena will be crucial, especially for modeling purposes. The present contribution provides detailed experimental evidence on single component conversion as well as on the mutual influence of CO, NO, and HC on the respective conversion for close to commercial Pt- and Pd-only catalysts under isothermal conditions. It will be shown, that hysteresis effects on Pd-only catalysts mostly vanish after one lightoff. Contrarily, on Pt-only catalysts, a cyclic, stationary conversion hysteresis during lightoff/lightout experiments is observed for CO and NO. C3H6-only however does not show this phenomenon whereas small hysteresis in conversion can be observed in combination with CO and/or NO.Modeling of Conversion Hysteresis Phenomena for Pt/Pd‐based Diesel Oxidation Catalystshttps://puma.ub.uni-stuttgart.de/bibtex/2574db6b66a1dc28b318b19ddeb7d0546/danieldobeschdanieldobesch2018-09-03T17:11:36+02:00dubbe 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/1bb61bcff0c5c0e8dbe03eb8271afa510/author/0"><span itemprop="name">H. Dubbe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title=" G.Eigenberger" itemprop="url" href="/person/1bb61bcff0c5c0e8dbe03eb8271afa510/author/1"><span itemprop="name">G.Eigenberger</span></a></span>, </span> und <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/1bb61bcff0c5c0e8dbe03eb8271afa510/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>2018<meta content="2018" itemprop="datePublished"/></span></em>)</span>Mon Sep 03 17:11:36 CEST 2018Chemie Ingenieur Technik625--633Modeling of Conversion Hysteresis Phenomena for Pt/Pd‐based Diesel Oxidation Catalysts902018dubbe eigenberger icvt journal nieken Oxygen storage dominated three-way catalyst modeling for fresh catalystshttps://puma.ub.uni-stuttgart.de/bibtex/210a6b2f2bf6c688d78ae1e4519e3d65f/danieldobeschdanieldobesch2018-09-03T16:38:55+02:00bickel eigenberger icvt journal nieken <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="J. Bickel" itemprop="url" href="/person/1aa97c311f8980b7f53a7e297496286d0/author/0"><span itemprop="name">J. Bickel</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="B. Odendall" itemprop="url" href="/person/1aa97c311f8980b7f53a7e297496286d0/author/1"><span itemprop="name">B. Odendall</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="G. Eigenberger" itemprop="url" href="/person/1aa97c311f8980b7f53a7e297496286d0/author/2"><span itemprop="name">G. Eigenberger</span></a></span>, </span> und <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/1aa97c311f8980b7f53a7e297496286d0/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">Chemical Engineering Science</span>, </em> </span>(<em><span>März 2017<meta content="März 2017" itemprop="datePublished"/></span></em>)</span>Mon Sep 03 16:38:55 CEST 2018Chemical Engineering Sciencemar34--53Oxygen storage dominated three-way catalyst modeling for fresh catalysts1602017bickel eigenberger icvt journal nieken Optimization of a heat-integrated exhaust catalyst for CNG engineshttps://puma.ub.uni-stuttgart.de/bibtex/2cdaafaa5dc62c0b23623a645acf94ee9/christianzanderchristianzander2018-07-25T11:20:25+02:00eigenberger icvt journal nieken rink tuttlies <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M. Rink" itemprop="url" href="/person/1ae9dbcd23e8f71a7c8aff4ae919485e4/author/0"><span itemprop="name">M. Rink</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="G. Eigenberger" itemprop="url" href="/person/1ae9dbcd23e8f71a7c8aff4ae919485e4/author/1"><span itemprop="name">G. Eigenberger</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Nieken" itemprop="url" href="/person/1ae9dbcd23e8f71a7c8aff4ae919485e4/author/2"><span itemprop="name">U. Nieken</span></a></span>, </span> und <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="U. Tuttlies" itemprop="url" href="/person/1ae9dbcd23e8f71a7c8aff4ae919485e4/author/3"><span itemprop="name">U. Tuttlies</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Catalysis Today</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">188 </span></span>(<span itemprop="issueNumber">1</span>):
<span itemprop="pagination">113--120</span></em> </span>(<em><span>Juli 2012<meta content="Juli 2012" itemprop="datePublished"/></span></em>)</span>Wed Jul 25 11:20:25 CEST 2018Catalysis Todayjul1113--120Optimization of a heat-integrated exhaust catalyst for {CNG} engines1882012eigenberger icvt journal nieken rink tuttlies