Efficient Removal of Methane over Cobalt-Monoxide-Doped AuPd Nanocatalysts.
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| Title: | Efficient Removal of Methane over Cobalt-Monoxide-Doped AuPd Nanocatalysts. |
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| Authors: | Shaohua Xie1, Yuxi Liu1 yxliu@bjut.edu.cn, Jiguang Deng1 jgdeng@bjut.edu.cn, Simiao Zang1, Zhenhua Zhang2, Arandiyan, Hamidreza3, Hongxing Dai1 hxdai@bjut.edu.cn |
| Source: | Environmental Science & Technology. 2/21/2017, Vol. 51 Issue 4, p2271-2279. 9p. |
| Subjects: | Alloys, Nanoparticles, Methane in water, Hydroxyl group, Water vapor |
| Abstract: | To overcome deactivation of Pd-based catalysts at high temperatures, we herein design a novel pathway by introducing a certain amount of CoO to the supported Au-Pd alloy nanoparticles (NPs) to generate high-performance Au-Pd-xCoO/three- dimensionally ordered macroporous (3DOM) Co3O4 (x is the Co/Pd molar ratio) catalysts. The doping of CoO induced the formation of PdO-CoO active sites, which was beneficial for the improvement in adsorption and activation of CH4 and catalytic performance. The Au-Pd- 0.40CoO/3DOM Co3O4 sample performed the best (T90% = 341 °C at a space velocity of 20--000 mL g-1 h-1). Deactivation of the 3DOM Co3O4-supported Au-Pd, Pd-CoO, and Au-Pd-xCoO nanocatalysts resulting from water vapor addition was due to the formation and accumulation of hydroxyl on the catalyst surface, whereas deactivation of the Pd-CoO/3DOM Co3O4 catalyst at high temperatures (680-800 °C) might be due to decomposition of the PdOy active phase into aggregated Pd0 NPs. The Au-Pd-xCoO/3DOM Co3O4 nanocatalysts exhibited better thermal stability and water tolerance ability compared to the 3DOM Co3O4-supported Au-Pd and Pd-CoO nanocatalysts. We believe that the supported Au-Pd-xCoO nanomaterials are promising catalysts in practical applications for organic combustion. [ABSTRACT FROM AUTHOR] |
| Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 122594736 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Efficient Removal of Methane over Cobalt-Monoxide-Doped AuPd Nanocatalysts. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shaohua+Xie%22">Shaohua Xie</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yuxi+Liu%22">Yuxi Liu</searchLink><relatesTo>1</relatesTo><i> yxliu@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Jiguang+Deng%22">Jiguang Deng</searchLink><relatesTo>1</relatesTo><i> jgdeng@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Simiao+Zang%22">Simiao Zang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhenhua+Zhang%22">Zhenhua Zhang</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Arandiyan%2C+Hamidreza%22">Arandiyan, Hamidreza</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Hongxing+Dai%22">Hongxing Dai</searchLink><relatesTo>1</relatesTo><i> hxdai@bjut.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Technology%22">Environmental Science & Technology</searchLink>. 2/21/2017, Vol. 51 Issue 4, p2271-2279. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Methane+in+water%22">Methane in water</searchLink><br /><searchLink fieldCode="DE" term="%22Hydroxyl+group%22">Hydroxyl group</searchLink><br /><searchLink fieldCode="DE" term="%22Water+vapor%22">Water vapor</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To overcome deactivation of Pd-based catalysts at high temperatures, we herein design a novel pathway by introducing a certain amount of CoO to the supported Au-Pd alloy nanoparticles (NPs) to generate high-performance Au-Pd-xCoO/three- dimensionally ordered macroporous (3DOM) Co3O4 (x is the Co/Pd molar ratio) catalysts. The doping of CoO induced the formation of PdO-CoO active sites, which was beneficial for the improvement in adsorption and activation of CH4 and catalytic performance. The Au-Pd- 0.40CoO/3DOM Co3O4 sample performed the best (T90% = 341 °C at a space velocity of 20--000 mL g-1 h-1). Deactivation of the 3DOM Co3O4-supported Au-Pd, Pd-CoO, and Au-Pd-xCoO nanocatalysts resulting from water vapor addition was due to the formation and accumulation of hydroxyl on the catalyst surface, whereas deactivation of the Pd-CoO/3DOM Co3O4 catalyst at high temperatures (680-800 °C) might be due to decomposition of the PdOy active phase into aggregated Pd0 NPs. The Au-Pd-xCoO/3DOM Co3O4 nanocatalysts exhibited better thermal stability and water tolerance ability compared to the 3DOM Co3O4-supported Au-Pd and Pd-CoO nanocatalysts. We believe that the supported Au-Pd-xCoO nanomaterials are promising catalysts in practical applications for organic combustion. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1021/acs.est.6b03983 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 2271 Subjects: – SubjectFull: Alloys Type: general – SubjectFull: Nanoparticles Type: general – SubjectFull: Methane in water Type: general – SubjectFull: Hydroxyl group Type: general – SubjectFull: Water vapor Type: general Titles: – TitleFull: Efficient Removal of Methane over Cobalt-Monoxide-Doped AuPd Nanocatalysts. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shaohua Xie – PersonEntity: Name: NameFull: Yuxi Liu – PersonEntity: Name: NameFull: Jiguang Deng – PersonEntity: Name: NameFull: Simiao Zang – PersonEntity: Name: NameFull: Zhenhua Zhang – PersonEntity: Name: NameFull: Arandiyan, Hamidreza – PersonEntity: Name: NameFull: Hongxing Dai IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 02 Text: 2/21/2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 0013936X Numbering: – Type: volume Value: 51 – Type: issue Value: 4 Titles: – TitleFull: Environmental Science & Technology Type: main |
| ResultId | 1 |
