✦ LIBER ✦
Methane activation in exchange and oxidative dimerization reactions : a study using isotope steady-state and transient techniques
✍ Scribed by C. Mirodatos; A. Holmen; R. Mariscal; G.A. Martin
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 566 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0920-5861
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✦ Synopsis
A study of methane activation (reversible for 'exchange reaction or irreversible for oxidative dimerization) is carried out on alkali promoted and unpromoted basic oxides (magnesia and lsnthana) using isotopic steady-state and transient techniques. Rates of CH4/CD4 scrambling, isotopic effect between CH4 and CD4 coupling, surface concentration of reversibly adsorbed methane, of C2 and CO, precursors are determined. Mechanistic propositions focused on the role played by the surface basicity and the poisoning effect of alkali carbonate are formulated.