涂碳空心铁基催化剂及其费托合成反应性能
Preparation and performance of carbon-coated hollow microsphere iron-based catalysts for Fischer-Tropsch synthesis
采用水热合成一锅法,制备了涂覆碳空心微球铁基催化剂,并将其应用于费托合成反应。采用X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、热重分析法(TG)、程序升温脱附(TPD)、傅里叶变换红外光谱仪(FT-IR)等手段对催化剂进行表征分析。结果表明,空心微球催化剂具有较好的碳链增长能力,C5+烃的选择性高达94.73%,同时副产物CH4选择性仅为2.44%,但CO的转化率相对较低为16.93%。涂覆碳空心微球催化剂,CO转化率大幅度提升至51.12%,C5+烃仍保持较高选择性为87.35%,同时副产物CH4选择性为5.11%。
A hydrothermal one-pot method was used to prepare carbon-coated hollow microsphere iron-based catalysts,which were applied in the Fischer-Tropsch synthesis reaction.The catalysts were characterized and analyzed using X-ray diffraction (XRD),field emission scanning electron microscopy (FE-SEM),thermogravimetric analysis (TG),temperature-programmed desorption (TPD),and Fourier-transform infrared spectroscopy (FT-IR),among other techniques.The results show that the hollow microsphere catalyst has a good carbon chain growth ability,with the selectivity of C5+ hydrocarbons as high as 94.73%,while the selectivity of the by-product CH4 is only 2.44%,but the conversion rate of CO is relatively low at 16.93%.The coated carbon hollow catalyst significantly increases the CO conversion rate to 51.12%,while maintaining a high selectivity of C5+ hydrocarbons at 87.35% and a by-product CH4 selectivity of 5.11%.
syngas / Fischer-Tropsch synthesis / hollow / iron-based catalysts / coated with carbon
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浙江工业大学2024年教育教学改革“科产教融合专项”项目(JG20240022)
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