Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation
For A-site substituted AA'BO3 perovskite, the doped A' element is easy to migrate to the surface and form segregation of A'Ox, which could partially block active B sites and thus reduce catalytic activity. In the present work a La0.8Sr0.2CoO3-δ perovskite-type solid was first prepared...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Catalysis Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1566736721000376 |
| _version_ | 1818640624906141696 |
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| author | Yonghui Wei Lei Ni Minxia Li Jili Zhao |
| author_facet | Yonghui Wei Lei Ni Minxia Li Jili Zhao |
| author_sort | Yonghui Wei |
| collection | DOAJ |
| description | For A-site substituted AA'BO3 perovskite, the doped A' element is easy to migrate to the surface and form segregation of A'Ox, which could partially block active B sites and thus reduce catalytic activity. In the present work a La0.8Sr0.2CoO3-δ perovskite-type solid was first prepared and then treated with acetic acid to eliminate SrO segregation on its surface. The obtained catalyst (LCSO-a) possessed a significantly enhanced catalytic activity for toluene oxidation in the 220–260 °C range. This promotion effect might be attributed to the increase in the concentration of active surface oxygen species and the reduction in their binding strength. In addition, the LCSO-a catalyst showed very good stability and water resistance. |
| first_indexed | 2024-12-16T23:14:14Z |
| format | Article |
| id | doaj.art-f88bf035b042452f80827a302c05effe |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-12-16T23:14:14Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-f88bf035b042452f80827a302c05effe2022-12-21T22:12:21ZengElsevierCatalysis Communications1873-39052021-07-01155106314Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidationYonghui Wei0Lei Ni1Minxia Li2Jili Zhao3Corresponding author.; College of Chemistry and Biology, Beihua University, Jilin 132013, PR ChinaCollege of Chemistry and Biology, Beihua University, Jilin 132013, PR ChinaCollege of Chemistry and Biology, Beihua University, Jilin 132013, PR ChinaCollege of Chemistry and Biology, Beihua University, Jilin 132013, PR ChinaFor A-site substituted AA'BO3 perovskite, the doped A' element is easy to migrate to the surface and form segregation of A'Ox, which could partially block active B sites and thus reduce catalytic activity. In the present work a La0.8Sr0.2CoO3-δ perovskite-type solid was first prepared and then treated with acetic acid to eliminate SrO segregation on its surface. The obtained catalyst (LCSO-a) possessed a significantly enhanced catalytic activity for toluene oxidation in the 220–260 °C range. This promotion effect might be attributed to the increase in the concentration of active surface oxygen species and the reduction in their binding strength. In addition, the LCSO-a catalyst showed very good stability and water resistance.http://www.sciencedirect.com/science/article/pii/S1566736721000376Toluene oxidationPerovskiteSr segregationAcid treatment |
| spellingShingle | Yonghui Wei Lei Ni Minxia Li Jili Zhao Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation Catalysis Communications Toluene oxidation Perovskite Sr segregation Acid treatment |
| title | Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation |
| title_full | Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation |
| title_fullStr | Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation |
| title_full_unstemmed | Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation |
| title_short | Acid treated Sr-substituted LaCoO3 perovskite for toluene oxidation |
| title_sort | acid treated sr substituted lacoo3 perovskite for toluene oxidation |
| topic | Toluene oxidation Perovskite Sr segregation Acid treatment |
| url | http://www.sciencedirect.com/science/article/pii/S1566736721000376 |
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