The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO
The influence of thermo-exfoliated graphite (TEG) on the catalytic activity of nickel in the CO oxidation process has been investigated. It was shown that nickel supported on the thermo-exfoliated graphite surface was more active catalytically than the bulk metal. Alternate oxidation–reduction on th...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2000-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617001493666 |
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| author | Vitaly K. Yatsimirsky Vitaly L. Budarin Vitaly Y. Diyuk L.Y. Matzui M.I. Zacharenko |
| author_facet | Vitaly K. Yatsimirsky Vitaly L. Budarin Vitaly Y. Diyuk L.Y. Matzui M.I. Zacharenko |
| author_sort | Vitaly K. Yatsimirsky |
| collection | DOAJ |
| description | The influence of thermo-exfoliated graphite (TEG) on the catalytic activity of nickel in the CO oxidation process has been investigated. It was shown that nickel supported on the thermo-exfoliated graphite surface was more active catalytically than the bulk metal. Alternate oxidation–reduction on the Ni–NiO phase boundary occurred at temperatures higher than 633 K (Curie temperature of pure nickel). Using a magnetogravimetric method, it was found that the nickel catalyst was transformed by the reaction mixture into a heterophase (Ni/NiO) system both in the presence of a carrier and in its absence. Hence the carrier did not influence the size of the Ni particles. The high catalytic activity of the catalyst supported on graphite may be explained by an increase in the number of Ni particles. Ni/TEG and Ni/NiO samples were studied via X-ray diffraction, Auger spectroscopy and electron microscopy methods. |
| format | Article |
| id | doaj-art-ed0a69fe0f3b4dcda760fa5e22698f9d |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2000-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-ed0a69fe0f3b4dcda760fa5e22698f9d2025-01-02T22:39:32ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382000-09-011810.1260/0263617001493666The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiOVitaly K. YatsimirskyVitaly L. BudarinVitaly Y. DiyukL.Y. MatzuiM.I. ZacharenkoThe influence of thermo-exfoliated graphite (TEG) on the catalytic activity of nickel in the CO oxidation process has been investigated. It was shown that nickel supported on the thermo-exfoliated graphite surface was more active catalytically than the bulk metal. Alternate oxidation–reduction on the Ni–NiO phase boundary occurred at temperatures higher than 633 K (Curie temperature of pure nickel). Using a magnetogravimetric method, it was found that the nickel catalyst was transformed by the reaction mixture into a heterophase (Ni/NiO) system both in the presence of a carrier and in its absence. Hence the carrier did not influence the size of the Ni particles. The high catalytic activity of the catalyst supported on graphite may be explained by an increase in the number of Ni particles. Ni/TEG and Ni/NiO samples were studied via X-ray diffraction, Auger spectroscopy and electron microscopy methods.https://doi.org/10.1260/0263617001493666 |
| spellingShingle | Vitaly K. Yatsimirsky Vitaly L. Budarin Vitaly Y. Diyuk L.Y. Matzui M.I. Zacharenko The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO Adsorption Science & Technology |
| title | The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO |
| title_full | The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO |
| title_fullStr | The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO |
| title_full_unstemmed | The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO |
| title_short | The Influence of Carrier on the Critical Phenomena in CO Oxidation over NiO |
| title_sort | influence of carrier on the critical phenomena in co oxidation over nio |
| url | https://doi.org/10.1260/0263617001493666 |
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