Insight into the Metal-Support Interaction of Pt and β-MnO2 in CO Oxidation
Pt-based catalysts exhibit unique catalytic properties in many chemical reactions. In particular, metal-support interactions (MSI) greatly improve catalytic activity. However, the current MSI mechanism between platinum (Pt) and the support is not clear enough. In this paper, the interaction of 1 wt% Pt nanoparticles (NPs) on β-MnO2 in carbon monoxide (CO) oxidation was studied. The Pt on β-MnO2 inhibited CO oxidation below 210 °C but promoted it above 210 °C. A Pt/β-MnO2 catalyst contains more Pt4+ and less Pt2+. The results of operando DRIFTS-MS show that surface-terminal-type oxygen (M=O) plays an important role in CO oxidation. When the temperature was below 210 °C, Mn=O consumption on Pt/β-MnO2 was less than β-MnO2 due to Pt4+ inhibition on CO oxidation. When the temperature was above 210 °C, Pt4+ was reduced to Pt2+, and Mn=O consumption due to CO oxidation was greater than β-MnO2. The interaction of Pt and β-MnO2 is proposed.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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| Enthalten in: |
Molecules (Basel, Switzerland) - 28(2023), 19 vom: 29. Sept. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Tiantian [VerfasserIn] |
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| Links: |
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| Themen: |
Bridge-type oxygen |
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| Anmerkungen: |
Date Revised 31.10.2023 published: Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.3390/molecules28196879 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM363296840 |
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| 500 | |a Date Revised 31.10.2023 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Pt-based catalysts exhibit unique catalytic properties in many chemical reactions. In particular, metal-support interactions (MSI) greatly improve catalytic activity. However, the current MSI mechanism between platinum (Pt) and the support is not clear enough. In this paper, the interaction of 1 wt% Pt nanoparticles (NPs) on β-MnO2 in carbon monoxide (CO) oxidation was studied. The Pt on β-MnO2 inhibited CO oxidation below 210 °C but promoted it above 210 °C. A Pt/β-MnO2 catalyst contains more Pt4+ and less Pt2+. The results of operando DRIFTS-MS show that surface-terminal-type oxygen (M=O) plays an important role in CO oxidation. When the temperature was below 210 °C, Mn=O consumption on Pt/β-MnO2 was less than β-MnO2 due to Pt4+ inhibition on CO oxidation. When the temperature was above 210 °C, Pt4+ was reduced to Pt2+, and Mn=O consumption due to CO oxidation was greater than β-MnO2. The interaction of Pt and β-MnO2 is proposed | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a CO oxidation | |
| 650 | 4 | |a MnO2 | |
| 650 | 4 | |a Pt | |
| 650 | 4 | |a bridge-type oxygen | |
| 650 | 4 | |a metal–support interaction | |
| 650 | 4 | |a terminal-type oxygen | |
| 700 | 1 | |a Xu, Jiacheng |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Fang, Shiyu |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Zuliang |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Erhao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Jiali |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Shuiliang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Jing |e verfasserin |4 aut | |
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| 773 | 1 | 8 | |g volume:28 |g year:2023 |g number:19 |g day:29 |g month:09 |
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