Effect of Sr on the properties of Ce–Zr–La mixed oxides
Ce–Zr–La–Sr mixed oxides, with different Sr contents, were prepared by the sol–gel method. In a flow-system microreactor, the reduction properties and the oxygen storage capacity (OSC) of the Ce–Zr–La–Sr mixed oxides were investigated by a temperature programmed reduction (TPR) and a pulse technique...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2006-03-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.shd.org.yu/HtDocs/SHD/vol71/No3/JSCS_V71_No3-10.pdf |
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| author | RICHUAN RAO LIANYONG LI FENGYI LI |
| author_facet | RICHUAN RAO LIANYONG LI FENGYI LI |
| author_sort | RICHUAN RAO |
| collection | DOAJ |
| description | Ce–Zr–La–Sr mixed oxides, with different Sr contents, were prepared by the sol–gel method. In a flow-system microreactor, the reduction properties and the oxygen storage capacity (OSC) of the Ce–Zr–La–Sr mixed oxides were investigated by a temperature programmed reduction (TPR) and a pulse technique. It was shown that the properties of the Ce–Zr–La mixed oxides depend on the Sr content and that the optimum Sr content in the Ce–Zr–La–Sr mixed oxide is 3 mol%. The Ce–Zr–La–Sr mixed oxides doped with 3 mol% Sr (Ce0.52Zr0.4La0.05Sr0.03O1.945) has the largest specific surface area and better reduction properties and oxygen storage capacity in comparison to the other investigated samples. The XRD results of the Ce–Zr–La–Sr mixed oxides showed that their X-ray diffraction patterns are well in agreement with that of fluorite-type CeO2 with Sr ions incorporated into the Ce–Zr–La mixed oxide structures. With increasing calcination temperature, the intensity of the X-ray diffraction peaks increased, but no new peaks were observed. All of these indicate that the synthesized samples had good thermal stability. |
| first_indexed | 2024-12-20T01:02:42Z |
| format | Article |
| id | doaj.art-6dc87d68dc124410810066bfbe3af670 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-20T01:02:42Z |
| publishDate | 2006-03-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-6dc87d68dc124410810066bfbe3af6702022-12-21T19:58:56ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392006-03-01713285291Effect of Sr on the properties of Ce–Zr–La mixed oxidesRICHUAN RAOLIANYONG LIFENGYI LICe–Zr–La–Sr mixed oxides, with different Sr contents, were prepared by the sol–gel method. In a flow-system microreactor, the reduction properties and the oxygen storage capacity (OSC) of the Ce–Zr–La–Sr mixed oxides were investigated by a temperature programmed reduction (TPR) and a pulse technique. It was shown that the properties of the Ce–Zr–La mixed oxides depend on the Sr content and that the optimum Sr content in the Ce–Zr–La–Sr mixed oxide is 3 mol%. The Ce–Zr–La–Sr mixed oxides doped with 3 mol% Sr (Ce0.52Zr0.4La0.05Sr0.03O1.945) has the largest specific surface area and better reduction properties and oxygen storage capacity in comparison to the other investigated samples. The XRD results of the Ce–Zr–La–Sr mixed oxides showed that their X-ray diffraction patterns are well in agreement with that of fluorite-type CeO2 with Sr ions incorporated into the Ce–Zr–La mixed oxide structures. With increasing calcination temperature, the intensity of the X-ray diffraction peaks increased, but no new peaks were observed. All of these indicate that the synthesized samples had good thermal stability.http://www.shd.org.yu/HtDocs/SHD/vol71/No3/JSCS_V71_No3-10.pdfCe–Zr–La–Sr mixed oxidesXRD characterizationreduction propertiesoxygen storage capacity |
| spellingShingle | RICHUAN RAO LIANYONG LI FENGYI LI Effect of Sr on the properties of Ce–Zr–La mixed oxides Journal of the Serbian Chemical Society Ce–Zr–La–Sr mixed oxides XRD characterization reduction properties oxygen storage capacity |
| title | Effect of Sr on the properties of Ce–Zr–La mixed oxides |
| title_full | Effect of Sr on the properties of Ce–Zr–La mixed oxides |
| title_fullStr | Effect of Sr on the properties of Ce–Zr–La mixed oxides |
| title_full_unstemmed | Effect of Sr on the properties of Ce–Zr–La mixed oxides |
| title_short | Effect of Sr on the properties of Ce–Zr–La mixed oxides |
| title_sort | effect of sr on the properties of ce zr la mixed oxides |
| topic | Ce–Zr–La–Sr mixed oxides XRD characterization reduction properties oxygen storage capacity |
| url | http://www.shd.org.yu/HtDocs/SHD/vol71/No3/JSCS_V71_No3-10.pdf |
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