Attempt to yield light hydrocarbons including C3 fraction by supplying ethene and syngas on Co/SiO2 catalyst
| Autor: | Takashi Suzuki, Kento Takahashi, Eri Murakami |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Chain propagation 010405 organic chemistry Chemistry Fraction (chemistry) 010402 general chemistry Metathesis 01 natural sciences Catalysis 0104 chemical sciences Hydrocarbon Chemical engineering Methanation Yield (chemistry) Physical and Theoretical Chemistry Syngas |
| Zdroj: | Reaction Kinetics, Mechanisms and Catalysis. 126:963-973 |
| ISSN: | 1878-5204 1878-5190 |
| DOI: | 10.1007/s11144-019-01537-5 |
| Popis: | When a 1:2 gas mixture of CO and H2, namely syngas, was contacted onto Co/SiO2 catalyst at 513 K with low pressure such as 0.2 kg/cm2, G, methanation was preferentially promoted, whereas chain propagation was suppressed. In contrast to this, when 1:3 gas mixture of ethene and syngas was fed onto Co/SiO2 catalyst under the same conditions, hourly productivity of light hydrocarbons involving C3 fraction was increased 3.3-fold as much as that in the case flowing syngas alone at that condition. It was deduced that formation of light hydrocarbon like C3 was caused by capturing methylidene (=CH2) species by ethene on Co/SiO2 catalyst on which reverse metathesis (C2H4 + 2-C4H8 → 2C3H6) following the dimerization of ethene was not concerned with C3 formation. In addition, a small amount of liquefied hydrocarbons was collected despite the low pressure and chain growth probability (α) was presumed 0.73. It might be suggested that co-feeding ethene and syngas onto FT active catalyst like Co/SiO2 was one of effective methods to obtain light hydrocarbons including C3 fraction at low pressure. |
| Databáze: | OpenAIRE |
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