Effect of al2o3/sio2 ratio on iron-based catalysts, for fischer-tropsch synthesis
文献类型：期刊论文
| 作者 | Wan, HJ; Wu, BS; Zhang, CH; Teng, BT; Tao, ZC; Yang, Y; Zhu, YL; Xiang, HW; Li, YW |
| 刊名 | Fuel
 |
| 出版日期 | 2006-07-01 |
| 卷号 | 85期号:10-11页码:1371-1377 |
| 关键词 | Fischer-tropsch synthesis Precipitated iron-based catalysts Mossbauer spectroscopy |
| ISSN号 | 0016-2361 |
| DOI | 10.1016/j.fuel.2005.12.016 |
| 通讯作者 | Li, yw() |
| 英文摘要 | A systematic study was undertaken to investigate the effects of al2o3/sio2 ratio on reduction, carburization and catalytic behavior of iron-based fischer-tropsch synthesis (ffs) catalysts promoted with potassium and copper. the catalysts were characterized by n-2 physical adsorption, co2 temperature-programmed desorption (tpd), h-2 temperature-programmed reduction (tpr) and mossbauer effect spectroscopy (mes). co2-tpd indicated that al2o3 binder has stronger acidity than sio2 binder and weakens the surface basicity of the catalysts. h-2-tpr profiles suggested that the lower al2o3/sio2 ratio promotes the reduction of fe2o3 --> fe3o4. with further increasing al2o3/sio2 ratio, the transformation of fe2o3-->fe3o4 shifts to higher temperatures. the mes results showed that the increase of al2o3/sio2 ratio leads to the relatively large crystallite size of alpha-fe2o3 and inhibits carburization of the catalyst. during reaction tests in a fixed bed reactor it was found that a maximum in catalyst activity is noted at the al2o3/sio2 ratio of 5/20 (weight basis). the selectivity to olefins shows a rapid decrease and the formations of methane and light hydrocarbons are promoted with increasing al2o3/sio2 ratio. the oxygenate selectivity in total products increases with increasing al2o3/sio2 ratio. (c) 2006 elsevier ltd. all rights reserved. |
| WOS关键词 | MOSSBAUER-SPECTROSCOPY ; SELECTIVITY ; REDUCTION ; BEHAVIOR ; PROMOTER |
| WOS研究方向 | Energy & Fuels ; Engineering |
| WOS类目 | Energy & Fuels ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000237998300008 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378579 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, YW |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, HJ,Wu, BS,Zhang, CH,et al. Effect of al2o3/sio2 ratio on iron-based catalysts, for fischer-tropsch synthesis[J]. Fuel,2006,85(10-11):1371-1377. |
| APA | Wan, HJ.,Wu, BS.,Zhang, CH.,Teng, BT.,Tao, ZC.,...&Li, YW.(2006).Effect of al2o3/sio2 ratio on iron-based catalysts, for fischer-tropsch synthesis.Fuel,85(10-11),1371-1377. |
| MLA | Wan, HJ,et al."Effect of al2o3/sio2 ratio on iron-based catalysts, for fischer-tropsch synthesis".Fuel 85.10-11(2006):1371-1377. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。