Catalytic performance of iron-based catalysts prepared using different precipitating agents for fischer-tropsch synthesis
文献类型：期刊论文
| 作者 | Wu, BS; Bai, L; Zhang, ZX; Xiang, HW; Li, YW; Yi, F; Xu, BF |
| 刊名 | Chinese journal of catalysis
 |
| 出版日期 | 2005-05-01 |
| 卷号 | 26期号:5页码:371-376 |
| 关键词 | Fischer-tropsch synthesis Ferrous sulfate Precipitated iron catalyst Slurry reactor |
| ISSN号 | 0253-9837 |
| 通讯作者 | Wu, bs() |
| 英文摘要 | The fe-cu-k-sio2 catalysts were prepared using ammonia or sodium carbonate as the precipitating agent and feso4 center dot xh(2)o as the precursor. the catalysts were characterized by atomic emission spectroscopy, n-2 adsorption, x-ray diffraction, x-ray photoelectron spectroscopy and mossbauer effect spectroscopy. the results showed that the ammonia-precipitated catalyst had higher surface area and larger pore volume than the catalyst prepared using sodium carbonate as the precipitant. the main phase of the catalyst was alpha-fe2o3. both fe3o4 and iron carbides phases were formed after the catalyst was reduced in the syngas atmosphere, and more iron carbides were found in the reduced ammonia-precipitated catalyst. the catalytic performance for fischer-tropsch synthesis was evaluated in a stirred tank slurry reactor under the reaction conditions of n (h-2) /n (co) = 0.67, whsv = 2 000 h(-1), p = 1.5 mpa and 250 degrees c. the catalyst showed high initial activity, and the co conversion was higher than 80%, but the catalyst prepared using ammonia as the precipitating agent was more active and stable during 600 h on stream, and its deactivation rate was very low (0.01%/h). both catalysts exhibited low selectivity for light hydrocarbons with methane selectivity around 3.0%, and high selectivity for heavy hydrocarbons with c5+ selectivity around 84%. the selectivity for c(2)similar to c-4 olefins over the ammonia-precipitated catalyst was higher than that over the sodium carbonate-precipitated catalyst. |
| WOS关键词 | MOSSBAUER-SPECTROSCOPY |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000229619800007 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377708 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, BS |
| 作者单位 | 1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Wuhan Univ, Coll Phys Sci & Technol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, BS,Bai, L,Zhang, ZX,et al. Catalytic performance of iron-based catalysts prepared using different precipitating agents for fischer-tropsch synthesis[J]. Chinese journal of catalysis,2005,26(5):371-376. |
| APA | Wu, BS.,Bai, L.,Zhang, ZX.,Xiang, HW.,Li, YW.,...&Xu, BF.(2005).Catalytic performance of iron-based catalysts prepared using different precipitating agents for fischer-tropsch synthesis.Chinese journal of catalysis,26(5),371-376. |
| MLA | Wu, BS,et al."Catalytic performance of iron-based catalysts prepared using different precipitating agents for fischer-tropsch synthesis".Chinese journal of catalysis 26.5(2005):371-376. |
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来源：中国科学院大学
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