| Autor: |
Masatoshi Suehiro, Tomoyuki Inui, Yoshinobu Takegami |
| Rok vydání: |
1982 |
| Předmět: |
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| Zdroj: |
Journal of The Japan Petroleum Institute. 25:63-68 |
| ISSN: |
0582-4664 |
| DOI: |
10.1627/jpi1958.25.63 |
| Popis: |
Steam reforming of methanol on different size Cu catalysts supported on alumina was investigated using a conventional flow reactor or the reactor combined with a micro-TG apparatus capable of simultaneous measurements of catalytic activity and the oxidation state of Cu. The apparent activation energy of the reaction rate was 18kcal/mol, and the reaction orders were 0.90, 0.50 with respect to methanol and water partial pressures, respectively. The major products were H2 and CO2. Dimethyl ether and CO with trace amounts of methane and formaldehyde were formed as minor. The active phase of Cu metal decreased due to the increase in oxygen-uptake during the reaction resulting in the state of Cu containing more oxygen. The reforming reaction rate markedly changed in the range of Cu particle sizes less than 10nm. This structure sensitivity is understandable from the decrease in the oxidation rate of Cu with increase in its particle size. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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