Promotional effects of multiwalled carbon nanotubes on iron catalysts for Fischer-Tropsch to olefins
文献类型：期刊论文
| 作者 | Zhang, ZP; Zhang, J; Wang, X; Si, R; Xu, J; Han, YF |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2018 |
| 卷号 | 365期号:-页码:71-85 |
| 关键词 | FE K-EDGE SYNTHESIS GAS SUPPORT SURFACE LIGHT OLEFINS HYDROLYTIC DEHYDROGENATION MOSSBAUER-SPECTROSCOPY SELECTIVE CONVERSION COCU/SIO2 CATALYSTS RAMAN-SPECTROSCOPY MESOPOROUS CARBON |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2018.05.021 |
| 文献子类 | 期刊论文 |
| 英文摘要 | N,O-functionalized and high-temperature-treated carbon nanotubes (N, O, HT-CNTs) were employed to investigate the promotional effects of CNT on Fe catalysts for the Fischer-Tropsch-to-olefins (FTO); particularly, the origin of active sites was explored using multiple in/ex situ techniques. An upward trend in initial activity, olefin selectivity, olefin/paraffin ratio, and chain growth probability is observed in the sequence of O-, N-, and HT-CNT supported catalysts. Unexpectedly, Fe/HT-CNT exhibits superb selectivity of 72.4% to C-2-C-7 olefins, closing to the Anderson-Schulz-Flory (ASF) limit. The defect-rich electron withdrawing HT-CNT weakens the reducibility of FeOx and the C3H6 adsorption on Fe, in contrast to O-, N-CNT. The defect-anchored Fe/HT-CNT promotes "Fe-C" formation and phase transformation toward epsilon-Fe2.2C/epsilon-Fe2C, improving CO adsorption and activation. The above merits boost olefin selectivity on Fe/HT-CNT. However, O-CNT abounded with O groups retards the formation and deep carbonization of the active phase, indicating a gradual increase in the yield. (C) 2018 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31080]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China 3.Zhengzhou Univ, Sch Chem Engn & Energy, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Henan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, ZP,Zhang, J,Wang, X,et al. Promotional effects of multiwalled carbon nanotubes on iron catalysts for Fischer-Tropsch to olefins[J]. JOURNAL OF CATALYSIS,2018,365(-):71-85. |
| APA | Zhang, ZP,Zhang, J,Wang, X,Si, R,Xu, J,&Han, YF.(2018).Promotional effects of multiwalled carbon nanotubes on iron catalysts for Fischer-Tropsch to olefins.JOURNAL OF CATALYSIS,365(-),71-85. |
| MLA | Zhang, ZP,et al."Promotional effects of multiwalled carbon nanotubes on iron catalysts for Fischer-Tropsch to olefins".JOURNAL OF CATALYSIS 365.-(2018):71-85. |
入库方式： OAI收割
来源：上海应用物理研究所
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