Conversion of Methane to Methanol on Copper Mordenite: Redox Mechanism of Isothermal and High-Temperature-Activation Procedures
| Autor: | Ana B. Pinar, Jeroen A. van Bokhoven, Mark A. Newton, Amy J. Knorpp |
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| Rok vydání: | 2018 |
| Předmět: |
X-ray absorption spectroscopy
Materials science 010405 organic chemistry General Chemical Engineering Inorganic chemistry technology industry and agriculture chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Redox Copper Industrial and Manufacturing Engineering Methane Isothermal process Mordenite 0104 chemical sciences chemistry.chemical_compound chemistry Activation temperature Methanol |
| Zdroj: | Industrial & Engineering Chemistry Research. 57:12036-12039 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | In the search for a commercially viable process to convert methane directly to methanol, the low-temperature isothermal process represents a promising new reaction pathway, because of its easier operation at lower temperatures than previously proposed processes with a high activation temperature. Isothermal methane to methanol conversion on copper-exchanged mordenite was examined by in situ XAS and compared to the conventional high-temperature activation procedure. Despite the copper remaining partially hydrated during the isothermal procedure, methanol can form when elevated pressures are applied. By observing the reduction of copper during reaction at elevated pressures, the mechanism was found to be a two-electron reduction–oxidation reaction for the isothermal procedure, as in the high-temperature activation case. |
| Databáze: | OpenAIRE |
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