Kinetic isotope effects in methane coupling on a reducible oxide catalyst
Kinetic isotope effects in methane activation on a reducible Na/MnOx/SiO2 catalyst have been investigated. The results show that there is a kinetic isotope effect for the formation of C2 products but not for the formation of COx, products. These observations conflict with kinetic measurements of the...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Baltzer Science Publishers, Baarn/Kluwer Academic Publishers
1990
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| _version_ | 1797085619468369920 |
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| author | Burch, R Tsang, S Mirodatos, C Sanchez M, J |
| author_facet | Burch, R Tsang, S Mirodatos, C Sanchez M, J |
| author_sort | Burch, R |
| collection | OXFORD |
| description | Kinetic isotope effects in methane activation on a reducible Na/MnOx/SiO2 catalyst have been investigated. The results show that there is a kinetic isotope effect for the formation of C2 products but not for the formation of COx, products. These observations conflict with kinetic measurements of the rate of formation of C2 products which appear to show that the reaction is second order with respect to the methane partial pressure. It is concluded that the rate determining step is activation of the C-H (or C-D) bond and that the apparent second order kinetics is an artefact of the kinetic analysis. The absence of a kinetic isotope effect in the formation of carbon oxides is discussed. © 1991 J.C. Baltzer A.G. Scientific Publishing Company. |
| first_indexed | 2024-03-07T02:11:03Z |
| format | Journal article |
| id | oxford-uuid:a0aa4f56-608b-47f2-9200-ca9a604bbb19 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:11:03Z |
| publishDate | 1990 |
| publisher | Baltzer Science Publishers, Baarn/Kluwer Academic Publishers |
| record_format | dspace |
| spelling | oxford-uuid:a0aa4f56-608b-47f2-9200-ca9a604bbb192022-03-27T02:07:00ZKinetic isotope effects in methane coupling on a reducible oxide catalystJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a0aa4f56-608b-47f2-9200-ca9a604bbb19EnglishSymplectic Elements at OxfordBaltzer Science Publishers, Baarn/Kluwer Academic Publishers1990Burch, RTsang, SMirodatos, CSanchez M, JKinetic isotope effects in methane activation on a reducible Na/MnOx/SiO2 catalyst have been investigated. The results show that there is a kinetic isotope effect for the formation of C2 products but not for the formation of COx, products. These observations conflict with kinetic measurements of the rate of formation of C2 products which appear to show that the reaction is second order with respect to the methane partial pressure. It is concluded that the rate determining step is activation of the C-H (or C-D) bond and that the apparent second order kinetics is an artefact of the kinetic analysis. The absence of a kinetic isotope effect in the formation of carbon oxides is discussed. © 1991 J.C. Baltzer A.G. Scientific Publishing Company. |
| spellingShingle | Burch, R Tsang, S Mirodatos, C Sanchez M, J Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title | Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title_full | Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title_fullStr | Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title_full_unstemmed | Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title_short | Kinetic isotope effects in methane coupling on a reducible oxide catalyst |
| title_sort | kinetic isotope effects in methane coupling on a reducible oxide catalyst |
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