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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c00692
|2 doi
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|a pubmed24n1045.xml
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|a (DE-627)NLM313617945
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|a (NLM)32787057
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|a DE-627
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|a eng
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|a May, Yu Aung
|e verfasserin
|4 aut
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|a Highly Efficient CuO/α-MnO2 Catalyst for Low-Temperature CO Oxidation
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Copper manganese composite (hopcalite) catalyst has been widely explored for low-temperature CO oxidation reactions. However, the previous reports on the stabilization of such composite catalysts have shown that they deactivated severely under moist conditions. Herein, we developed an α-MnO2 nanorod-supported copper oxide catalyst that is very active and stable for the conditions with or without moisture by the deposition precipitation (DP) method. Incredibly, the CuO/MnO2 DP catalyst (with 5 wt % copper loading) achieves superior activity with a reaction rate of 9.472 μmol-1·gcat-1·s-1 even at ambient temperatures, which is at least double times of that for the reported copper-based catalyst. Additionally, the CuO/MnO2 DP catalyst is significantly more stable than the copper manganese composite catalysts reported in the literature under the presence of 3% water vapor as well as without moisture. A correlation between the catalytic CO oxidation activity and textural characteristics was derived via multitechnique analyses. The results imply that the superior activity of the CuO/MnO2 DP catalyst is associated with the proper adsorption of CO on partially reduced copper oxide as Cu(I)-CO and more surface oxygen species at the interfacial site of the catalyst
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|a Journal Article
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1 |
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|a Wei, Shuai
|e verfasserin
|4 aut
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|a Yu, Wen-Zhu
|e verfasserin
|4 aut
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|a Wang, Wei-Wei
|e verfasserin
|4 aut
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| 700 |
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|a Jia, Chun-Jiang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 36(2020), 38 vom: 29. Sept., Seite 11196-11206
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2020
|g number:38
|g day:29
|g month:09
|g pages:11196-11206
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|u http://dx.doi.org/10.1021/acs.langmuir.0c00692
|3 Volltext
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