Fe-rich biomass derived char for microwave-assisted methane reforming with carbon dioxide
| Autor: | Keshuo Yan, Fumao Wang, Zhanlong Song, Jianwei Wang, Jian Chen, Tai Feng, Longzhi Li, Chunyuan Ma |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Iron chemistry.chemical_element 010501 environmental sciences 01 natural sciences Catalysis Methane chemistry.chemical_compound Animals Environmental Chemistry Renewable Energy Char Microwaves Waste Management and Disposal 0105 earth and related environmental sciences Methane reformer Carbon dioxide reforming Pollution chemistry Chemical engineering Charcoal Carbon dioxide Pyrolysis Carbon Syngas |
| Zdroj: | Science of The Total Environment. 657:1357-1367 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2018.12.097 |
| Popis: | Microwave-assisted methane reforming with carbon dioxide was dealt with in this work, using a Fe-rich biomass-derived char by one-step preparation. The main factors on the reforming reaction and stability of this catalyst were evaluated, together with a series of characterization on the produced gas and the used char. The char obtained from biomass pyrolysis with Fe2O3 addition of 10% exhibited the best performance on dry reforming reaction. A target CH4 conversion of 95% over this char was realized at 800 °C. Moreover, H2/CO ratio achieved with this char was prone to approach the stoichiometric value. Compared to CO2 conversion, CH4 conversion was more promoted with the increase of CO2/CH4 ratio. The variation of CO2/CH4 ratio also leaded to a noticeable changes on H2/CO ratio. More importantly, the selected char presented a satisfied stability, evidenced by the total decrease of 4.8% for CH4 conversion and 3.1% for CO2 conversion in the test of 160 min. This was contributed to a depressed in-situ carbon consumption and a moderate deterioration of porous structure. Gaseous products obtained with the appropriate char in a long run had a syngas content of 88.79% and H2/CO ratio of 0.92 on average. |
| Databáze: | OpenAIRE |
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