<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>25551</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>255</pageFirst>
    <pageLast>264</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>385</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-04-06</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Reaction dynamics of metal/oxide catalysts: Methanol oxidation at vanadium oxide films on Rh(111) from UHV to 10-2 mbar</title>
    <abstract language="eng">Recent advances in in situ microscopy allow to follow the reaction dynamics during a catalytic surface reaction from ultra-high vacuum to 0.1 mbar, thus bridging a large part of the pressure gap.&#13;
Submonolayer vanadium oxide films on Rh(111) have been studied during catalytic methanol oxidation in situ with spatially resolving imaging techniques. At 10-6 to 10-4 mbar VOx condenses into macroscopic circular islands that exhibit a substructure, consisting of a reduced island core and an oxidized outer ring. This substructure arises due to an oxygen gradient inside the VOx islands, which results in different coexisting 2D-phases of VOx on Rh(111). This substructure is also responsible for a "breathing-like" oscillatory expansion and contraction that the islands undergo under stationary conditions. Using density functional theory, the 2D-phase diagram of VOx on Rh(111) has been computed. The oscillatory behavior can be understood as a periodic phase transition between two 2D phases of VOx. With a newly developed near ambient pressure – low-energy electron microscope, it was shown that VOx islands disintegrate at 10-2&#13;
mbar, resulting in turbulent dynamics.</abstract>
    <parentTitle language="eng">Journal of Catalysis</parentTitle>
    <identifier type="doi">10.1016/j.jcat.2020.03.016</identifier>
    <identifier type="issn">0021-9517</identifier>
    <identifier type="issn">1090-2694</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</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>Bernhard von</firstName>
      <lastName>Boehn</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Christopher</firstName>
      <lastName>Penschke</lastName>
    </author>
    <author>
      <firstName>Xiaoke</firstName>
      <lastName>Li</lastName>
    </author>
    <author>
      <firstName>Joachim</firstName>
      <lastName>Paier</lastName>
    </author>
    <author>
      <firstName>Joachim</firstName>
      <lastName>Sauer</lastName>
    </author>
    <author>
      <firstName>Jon-Olaf</firstName>
      <lastName>Krisponeit</lastName>
    </author>
    <author>
      <firstName>Jan Ingo</firstName>
      <lastName>Flege</lastName>
    </author>
    <author>
      <firstName>Jens</firstName>
      <lastName>Falta</lastName>
    </author>
    <author>
      <firstName>Helder</firstName>
      <lastName>Marchetto</lastName>
    </author>
    <author>
      <firstName>Torsten</firstName>
      <lastName>Franz</lastName>
    </author>
    <author>
      <firstName>Gerhard</firstName>
      <lastName>Lilienkamp</lastName>
    </author>
    <author>
      <firstName>Ronald</firstName>
      <lastName>Imbihl</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Vanadium oxide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Methanol oxidation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Inverse catalyst</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Restructuring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Near ambient pressure low-energy electron microscope</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Heterogeneous catalysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pressure gap</value>
    </subject>
    <collection role="institutes" number="1503">FG Angewandte Physik und Halbleiterspektroskopie</collection>
  </doc>
</export-example>
