<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>27559</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>8198</pageFirst>
    <pageLast>8206</pageLast>
    <pageNumber/>
    <edition/>
    <issue>24</issue>
    <volume>9</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-06-09</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Stepping toward Efficient Microreactors for CO2 Methanation: 3D Printed Gyroid Geometry</title>
    <abstract language="eng">This work presents a comparative study towards the development of efficient micro-reactors based on 3D-printed structures. Thus, the study evaluates the influence of the metal substrate geometry on the performance of structured catalysts for the CO2 methanation reaction. For this purpose, 0.5%Ru–15%Ni/MgAl2O4 catalyst is wash coated over two different micro-monolithic metal substrates: a conventional parallel channel honeycomb structure and a novel 3D-printed structure with a complex gyroid geometry. The effect of the metal substrate geometry is analyzed for several CO2 sources including ideal flue gas atmospheres, the presence of residual CH4 and CO in the flue gas, as well as simulated biogas sources. The advantages of the gyroid-3D complex geometries over the honeycomb structures are shown for all evaluated conditions, providing at the best-case scenario a 14% improvement of CO2 conversion. Moreover, this contribution shows that systematically tailoring geometrical features of structured catalysts becomes an effective strategy to achieve improved catalysts performances independent of the flue gas composition. By enhancing the transport processes and the gas-catalyst interactions, the employed gyroid 3D metal substrates enable boosted CO2 conversions and greater CH4 selectivity within diffusional controlled regimes.</abstract>
    <parentTitle language="eng">ACS Sustainable Chemistry &amp; Engineering</parentTitle>
    <identifier type="doi">10.1021/acssuschemeng.1c01980</identifier>
    <identifier type="issn">2168-0485</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Francisco Manuel</firstName>
      <lastName>Baena-Moreno</lastName>
    </author>
    <submitter>
      <firstName>Renate</firstName>
      <lastName>Choyna</lastName>
    </submitter>
    <author>
      <firstName>Miriam</firstName>
      <lastName>González-Castaño</lastName>
    </author>
    <author>
      <firstName>Juan Carlos</firstName>
      <lastName>Navarro de Miguel</lastName>
    </author>
    <author>
      <firstName>Kamal Uddin Mohammad</firstName>
      <lastName>Miah</lastName>
    </author>
    <author>
      <firstName>Ralf</firstName>
      <lastName>Ossenbrink</lastName>
    </author>
    <author>
      <firstName>José Antonio</firstName>
      <lastName>Odriozola</lastName>
    </author>
    <author>
      <firstName>Harvey</firstName>
      <lastName>Arellano-García</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CO2 methanation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>gyroid geometry</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CH4 selectivity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>gyroid-3D complex</value>
    </subject>
    <collection role="institutes" number="3403">FG Füge- und Schweißtechnik</collection>
    <collection role="institutes" number="3603">FG Prozess- und Anlagentechnik</collection>
  </doc>
  <doc>
    <id>28957</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>8</pageNumber>
    <edition/>
    <issue/>
    <volume>258</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2022-06-14</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">3D-printed structured catalysts for CO2 methanation reaction: Advancing of gyroid-based geometries</title>
    <abstract language="eng">This work investigates the CO2 methanation rate of structured catalysts by tuning the geometry of 3D-printed metal Fluid Guiding Elements (FGEs) structures based on periodically variable pseudo-gyroid geometries. The enhanced performance showed by the structured catalytic systems is mostly associated with the capability of the&#13;
FGEs substrate geometries for efficient heat usages. Thus, variations on the channels diameter resulted in ca. 25% greater CO2 conversions values at intermediate temperature ranges. The highest void fraction evidenced in the best performing catalyst (3D-1) favored the radial heat transfer and resulted in significantly enhanced catalytic activity, achieving close to equilibrium (75%) conversions at 400 ◦C and 120 mL/min. For the 3D-1 catalyst, a mathematical model based on an experimental design was developed thus enabling the estimation of its behavior as a function of temperature, spatial velocity, hydrogen to carbon dioxide (H2/CO2) ratio, and inlet CO2 concentration.&#13;
Its optimal operating conditions were established under 3 different scenarios: 1) no restrictions, 2) minimum H2:CO2 ratios, and 3) minimum temperatures and H2/CO2 ratio. For instance, for the lattest scenario, the best CO2 methanation conditions require operating at 431 ◦C, 200 mL/min, H2/CO2 = 3 M ratio, and inlet CO2 concentration = 10 %.</abstract>
    <parentTitle language="eng">Energy Conversion and Management</parentTitle>
    <identifier type="doi">10.1016/j.enconman.2022.115464</identifier>
    <identifier type="issn">2590-1745</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Artikelnummer">115464</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Miriam</firstName>
      <lastName>González-Castaño</lastName>
    </author>
    <submitter>
      <firstName>Kamal</firstName>
      <lastName>Miah</lastName>
    </submitter>
    <author>
      <firstName>Francisco Manuel</firstName>
      <lastName>Baena-Moreno</lastName>
    </author>
    <author>
      <firstName>Juan Carlos</firstName>
      <lastName>Navarro de Miguel</lastName>
    </author>
    <author>
      <firstName>Kamal Uddin Mohammad</firstName>
      <lastName>Miah</lastName>
    </author>
    <author>
      <firstName>Fátima</firstName>
      <lastName>Arroyo-Torralvo</lastName>
    </author>
    <author>
      <firstName>Ralf</firstName>
      <lastName>Ossenbrink</lastName>
    </author>
    <author>
      <firstName>José Antonio</firstName>
      <lastName>Odriozola</lastName>
    </author>
    <author>
      <firstName>Walther</firstName>
      <lastName>Benzinger</lastName>
    </author>
    <author>
      <firstName>Andreas</firstName>
      <lastName>Hensel</lastName>
    </author>
    <author>
      <firstName>Achim</firstName>
      <lastName>Wenka</lastName>
    </author>
    <author>
      <firstName>Harvey</firstName>
      <lastName>Arellano-García</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>3D-printing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Triply periodic minimal surfaces</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fluid guiding elements</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CO2 methanation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structured catalysts</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Experiment design</value>
    </subject>
    <collection role="institutes" number="3403">FG Füge- und Schweißtechnik</collection>
    <collection role="institutes" number="3603">FG Prozess- und Anlagentechnik</collection>
  </doc>
  <doc>
    <id>29801</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>708</pageFirst>
    <pageLast>713</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject_ref</type>
    <publisherName>DVS Media GmbH</publisherName>
    <publisherPlace>Düsseldorf</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2022-12-21</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Herstellen hocheffektiver Mikroreaktoren durch selektives Laserstrahlschmelzen</title>
    <abstract language="deu">Das pulverbasierte 3D-Metalldrucken ermöglicht die Fertigung von hochkomplexen Integralbauteilen, die als Trägerstruktur für Mikroreaktoren benutzt werden. Nach einer Beschichtung der Struktur mit einem Katalysatormaterial, können diese Mikroreaktoren höchst effizient für die CO2-Methanisierung eingesetzt werden. Durch die additive Fertigung mit dem selektiven Laserstrahlschmelzen (SLM) wurden adaptierte dreidimensionale periodische Gitterstrukturen mit sehr geringen Wandstärken hergestellt. Diese weisen ein sehr günstiges Verhältnis von Oberfläche zu Volumen (TPMS - Triply periodic minimal surface) auf. Des Weiteren zeigen die TPMS-Strukturen vorteilhafte Strömungseigenschaften, die sowohl für die Beschichtung mit dem Katalysator-Material als auch die Durchströmung mit den Reaktionsmedien im Betrieb essentiell sind. So ist es beispielsweise möglich, durch die Variation der Dimension einer TPMS-Struktur die Oberfläche pro Volumeneinheit, den hydraulischen Durchmesser des Reaktors und somit auch den Transportprozess des Fluids deutlich zu verbessern. Diese Faktoren ermöglichen eine effektivere Gas-Katalysator-Reaktion. Im Vergleich zu Mikroreaktorstrukturen aus den traditionellen Herstellungsverfahren liefern die additiv gefertigten Strukturen sowohl eine höhere CO2-Umwandlungsrate als auch eine CH4-Selektivität innerhalb des diffusionskontrollierten Bereichs.</abstract>
    <parentTitle language="deu">DVS Congress 2022, Große Schweißtechnische Tagung, DVS Campus ; Kurzfassungen der Vorträge der Veranstaltung in Koblenz vom 19. bis 21. September 2022 ; (Langfassungen der Beiträge auf USB-Karte)</parentTitle>
    <identifier type="isbn">978-3-96144-189-1</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="UBICOseries">DVS-Berichte ; 382</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Kamal Uddin Mohammad</firstName>
      <lastName>Miah</lastName>
    </author>
    <submitter>
      <firstName>Hannes</firstName>
      <lastName>Wenzel</lastName>
    </submitter>
    <author>
      <firstName>Alexander</firstName>
      <lastName>Kloshek</lastName>
    </author>
    <author>
      <firstName>Miriam</firstName>
      <lastName>González-Castaño</lastName>
    </author>
    <author>
      <firstName>Christian</firstName>
      <lastName>Kehm</lastName>
    </author>
    <author>
      <firstName>Ralf</firstName>
      <lastName>Ossenbrink</lastName>
    </author>
    <author>
      <firstName>Vesselin</firstName>
      <lastName>Michailov</lastName>
    </author>
    <collection role="institutes" number="3403">FG Füge- und Schweißtechnik</collection>
    <collection role="institutes" number="3603">FG Prozess- und Anlagentechnik</collection>
  </doc>
</export-example>
