Thermal desorption of the PO radical from polycrystalline Pt surfaces |
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| Affiliation: | 1. Sirpeka Oy, Lampisuonkatu 9, FI-53850, Lappeenranta, Finland;2. KHE Consulting, Aldersrogade 8, DK-2100, Copenhagen, Denmark;3. Aalborg University (AAU), Denmark;4. Geological Survey of Denmark and Greenland (GEUS), Denmark;5. Université du Québec à Chicoutimi (UQAC), Quebec (2018-2020), Canada;6. University of Southeast Norway (USN), Norway;7. (2018) Recinto Universitario de Mayaguez, Puerto Rico;1. CNPC CBM Exploration and Development Pilot Test Base, Renqiu, Hebei, 062552, China;2. PetroChina Huabei Oilfield Company, Renqiu, Hebei, 062552, China;3. CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei, 062552, China |
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| Abstract: | The PO radical was detected to desorb from polycrystalline Pt surfaces during the catalytic decomposition of dimethyl methyl phosphonate and trimethyl phosphite above 1100 K using the laser-induced fluorescence technique. The activation energy for the desorption of adsorbed PO radicals, PO(a) → PO(g), was determined to be 59±2 kcal/mol in the temperature range 1100–1350 K at different radical source pressures. The mechanisms for PO production from these two catalytic reactions are briefly discussed. |
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