Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N2 purging
| Autor: | Juan Zhang, Jiangang Chen, Liu Kefeng, Kong Fanhua, Zhi-kai Li, Xiao Haicheng, He-xiang Shi |
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| Rok vydání: | 2016 |
| Předmět: |
Olefin fiber
Chromatography Chemistry Fischer–Tropsch process 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chemical synthesis 0104 chemical sciences Catalysis Surface-area-to-volume ratio Chemical engineering Yield (chemistry) 0210 nano-technology Selectivity Syngas |
| Zdroj: | Journal of Fuel Chemistry and Technology. 44:822-829 |
| ISSN: | 1872-5813 |
| DOI: | 10.1016/s1872-5813(16)30037-8 |
| Popis: | The Fischer-Tropsch synthesis has offered an alternative way to convert coal and biomass into chemicals such as α-olefins via syngas comprised of H 2 and CO. A pulse process switching between Fischer-Tropsch synthesis and N 2 purging was carried out when the Fischer-Tropsch synthesis became stable in the fixed bed reactor. The activity and selectivity over Fe-Co catalyst for α-olefins in Fischer-Tropsch synthesis reaction were measured under the normal conditions of 2.0 MPa, 497 K, 2000 h −1 and H 2 /CO volume ratio of 2.0. It was found that the olefin to paraffin ratio of C 3 for Fe-Co catalyst purged at 517 K and 0.2 MPa was almost nine times higher than that of the fresh one without purging under the same reaction conditions, and the CH 4 selectivity and CO conversion decreased after purging. Two possible reasons were proposed to explain these phenomena. Moreover, a batch experiment by the pulse process in fixed bed reactor was performed. Notably, a high olefins yield was obtained via the pulse process during the Fischer-Tropsch synthesis. |
| Databáze: | OpenAIRE |
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