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The state of zinc i...
The state of zinc in methanol synthesis over a Zn/ZnO/Cu(211) model catalyst
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- Amann, Peter (author)
- Stockholms universitet,Fysikum
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Klötzer, Bernhard (author)
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- Degerman, David, 1989- (author)
- Stockholms universitet,Fysikum
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Köpfle, Norbert (author)
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Götsch, Thomas (author)
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- Lömker, Patrick (author)
- Stockholms universitet,Fysikum,Deutsches Elektronen-Synchrotron DESY, Germany
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Rameshan, Christoph (author)
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Ploner, Kevin (author)
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Bikaljevic, Djuro (author)
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- Wang, Hsin-Yi (author)
- Stockholms universitet,Fysikum
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- Soldemo, Markus (author)
- Stockholms universitet,Fysikum
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- Shipilin, Mikhail (author)
- Stockholms universitet,Fysikum
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- Goodwin, Christopher M. (author)
- Stockholms universitet,Fysikum
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- Gladh, Jörgen, 1964- (author)
- Stockholms universitet,Fysikum
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- Halldin Stenlid, Joakim (author)
- Stockholms universitet,Fysikum
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- Börner, Mia (author)
- Stockholms universitet,Fysikum
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Schlueter, Christoph (author)
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- Nilsson, Anders (author)
- Stockholms universitet,Fysikum
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2022
- 2022
- English.
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 376:6593, s. 603-608
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The active chemical state of zinc (Zn) in a zinc-copper (Zn-Cu) catalyst during carbon dioxide/carbon monoxide (CO2/CO) hydrogenation has been debated to be Zn oxide (ZnO) nanoparticles, metallic Zn, or a Zn-Cu surface alloy. We used x-ray photoelectron spectroscopy at 180 to 500 millibar to probe the nature of Zn and reaction intermediates during CO2/CO hydrogenation over Zn/ZnO/Cu(211), where the temperature is sufficiently high for the reaction to rapidly turn over, thus creating an almost adsorbate-free surface. Tuning of the grazing incidence angle makes it possible to achieve either surface or bulk sensitivity. Hydrogenation of CO2 gives preference to ZnO in the form of clusters or nanoparticles, whereas in pure CO a surface Zn-Cu alloy becomes more prominent. The results reveal a specific role of CO in the formation of the Zn-Cu surface alloy as an active phase that facilitates efficient CO2 methanol synthesis.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Amann, Peter
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Klötzer, Bernhar ...
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Degerman, David, ...
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Köpfle, Norbert
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Götsch, Thomas
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Lömker, Patrick
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show more...
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Rameshan, Christ ...
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Ploner, Kevin
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Bikaljevic, Djur ...
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Wang, Hsin-Yi
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Soldemo, Markus
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Shipilin, Mikhai ...
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Goodwin, Christo ...
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Gladh, Jörgen, 1 ...
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Halldin Stenlid, ...
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Börner, Mia
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Schlueter, Chris ...
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Nilsson, Anders
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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Science
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Stockholm University