Plasma catalytic oxidation of methane on alumina-supported noble metal catalysts
✍ Scribed by Patrick Da Costa; Rui Marques; Stéphanie Da Costa
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 716 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0926-3373
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The oxidation of methane over a Pd/A1203 catalyst was studied for oxygen-to-methane ratios ("r") varying from 4 to 0.66. After aging under the reactants mixture at 600°C an increase in the catalytic activity was observed whatever the "F" value. In addition, the selectivity of the reaction depends on
Volcano-type patterns, not only in methane conversion but also in C x + hydrocarbons' selectivity, were observed over 60 wt.-% of PbO loaded on y-alumina. The maximum population of PbAl\*O, spine1 phase, considered to be formed due to the diffusion of Pb\*+ as well as A13+ and O\*-ions, was obtained
A palladium loaded catalyst was examined in order to reveal the effect of the support on the activity of oxidation of methane. The activity was declined or enhanced with time on stream, and its behavior depended upon the kind of support. The change of activity was accompanied with sintering of palla