Influences of melting method on fused iron catalysts for fischer-tropsch synthesis
文献类型：期刊论文
| 作者 | Zhang, Juan1; Sun, Taomei1,2; Ding, Jian1,3; Xiao, Haicheng4; Kong, Fanhua4; Chen, Jiangang1 |
| 刊名 | Rsc advances
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:65页码:60349-60354 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c6ra06772g |
| 通讯作者 | Chen, jiangang(chenjg@sxicc.ac.cn) |
| 英文摘要 | The impact of melting method on the performance of fused iron catalysts for the fischer-tropsch synthesis (fts) has been investigated. characterization technologies including icp, xrd, h-2-tpr, co-tpd, and mossbauer effect spectroscopy (mes) were used to study the bulk phase composition, and reduction and adsorption behaviors. the syngas conversion and ch4 selectivity of aaw was very similar to a commercial fused fe catalyst reported by sasol, slightly better than ot, but much better than if. the much inferior if catalyst was attributed to contamination with al (si) from the container, as the melting pool leached the wall of the crucible severely. the introduction of al (si) resulted in the formation of an irreducible feal2o4 (fe2sio4) phase that resisted carburation, thus if exhibited the lowest content of active carbide. both aaw and ot were excluded from this effect, since no crucible was adopted during fusion. the ot catalyst appeared mainly in the wustite phase (feo), showing slightly lower reducibility and higher abundance in supermagnetic fe3+ or fe2+ than aaw. the slightly negative performance of ot compared with aaw might be attributed to a lower extent of reduction originated from a difference in crystal lattice type, which led to a difference in both lattice defects and the solubility of exterior ions. the aaw catalyst, composed of mainly magnetite phase (fe3o4) besides a trace amount of feo, was reduced in steps and formed two active sites. the spent catalyst possessed the largest carbide content, which correlated well with its high activity and olefin selectivity. in addition, the aaw might benefit from the mixing precursor (fe3o4 plus a small amount of feo) that brought out assorted active sites. |
| WOS关键词 | AMMONIA-SYNTHESIS ; SELECTIVITY ; POTASSIUM ; PRESSURE ; SURFACE ; CO |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000379351600054 |
| 出版者 | ROYAL SOC CHEMISTRY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374731 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Chen, Jiangang |
| 作者单位 | 1.Chinese Acad Sci, Shanxi Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China 2.Kaifeng Huarui Chem Mat Co Ltd, Kaifeng 475000, Henan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.PetroChina Petrochem Res Inst, Beijing 100195, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Juan,Sun, Taomei,Ding, Jian,et al. Influences of melting method on fused iron catalysts for fischer-tropsch synthesis[J]. Rsc advances,2016,6(65):60349-60354. |
| APA | Zhang, Juan,Sun, Taomei,Ding, Jian,Xiao, Haicheng,Kong, Fanhua,&Chen, Jiangang.(2016).Influences of melting method on fused iron catalysts for fischer-tropsch synthesis.Rsc advances,6(65),60349-60354. |
| MLA | Zhang, Juan,et al."Influences of melting method on fused iron catalysts for fischer-tropsch synthesis".Rsc advances 6.65(2016):60349-60354. |
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来源：中国科学院大学
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