Microstructure and reactivity evolution of La-Fe-Al oxygen carrier for syngas production via chemical looping CH4-CO2 reforming
文献类型：期刊论文
| 作者 | Liu, Weiwei1; Xue, Peng1; Tian, Ming2; Wang, Xiaodong2; Ma, Xiaoxun1; Zhang, Tao2; Zhu, Yanyan1,2; Sun, Xueyan1 |
| 刊名 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
 |
| 出版日期 | 2017-12-28 |
| 卷号 | 42期号:52页码:30509-30524 |
| ISSN号 | 0360-3199 |
| 关键词 | Chemical Looping Reforming Syngas Oxygen Carrier Hexaaluminate Perovskite |
| DOI | 10.1016/j.ijhydene.2017.10.037 |
| 文献子类 | Article |
| 英文摘要 | The relationship between chemical looping CH4-CO2 reforming performance and the microstructure of oxygen carrier (OC) is very important for the rational design of OC. In this paper, we studied the structural evolution of La-Fe-Al (LFA-t, t = 900-1200 degrees C) OCs as thermal treatment and ten periodic CH4/CO2 redox cycles, and correlated to their reactivity and stability for syngas production. Different calcination temperature brought about great discrepancy in phase composition of LFA OCs: LaFeO3, Fe2O3, and alpha-Al2O3 at 900 degrees C, LaFexAl1-xO3 and La-hexaaluminate at 1000 degrees C, and monophasic La-hexaaluminate at 1100-1200 degrees C. During the CH4/CO2 redox process, the repeated phase separation occurred over LFA-900 and LFA-1000 accompanied by the appearance of metallic Fe and FeAl2O4, which resulted in serious CH4 pyrolysis. La-hexaaluminate showed good phase stability during CH4/CO2 redox process via the charge compensation mechanism. The large hexaaluminate crystalline of LFA-1200 inhibited the oxygen transport from the bulk to surface, which led to carbon deposition. LFA-1100 hexaaluminate OC with moderate crystal size exhibited excellent reactivity and stability for producing syngas with desirable H-2/CO ratio (similar to 2) during ten CH4/CO2 redox cycles thanks to high oxygen mobility and the reservation of hexaaluminate structure during redox process. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | METHANE PARTIAL OXIDATION ; PEROVSKITE-TYPE OXIDES ; SHELL REDOX CATALYST ; SYNTHESIS GAS ; BARIUM HEXAALUMINATE ; HYDROGEN-PRODUCTION ; CO2 UTILIZATION ; LATTICE OXYGEN ; BETA-ALUMINA ; IRON-OXIDE |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000418987800004 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169182]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Wang, Xiaodong |
| 作者单位 | 1.Northwest Univ, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Weiwei,Xue, Peng,Tian, Ming,et al. Microstructure and reactivity evolution of La-Fe-Al oxygen carrier for syngas production via chemical looping CH4-CO2 reforming[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42(52):30509-30524. |
| APA | Liu, Weiwei.,Xue, Peng.,Tian, Ming.,Wang, Xiaodong.,Ma, Xiaoxun.,...&Sun, Xueyan.(2017).Microstructure and reactivity evolution of La-Fe-Al oxygen carrier for syngas production via chemical looping CH4-CO2 reforming.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42(52),30509-30524. |
| MLA | Liu, Weiwei,et al."Microstructure and reactivity evolution of La-Fe-Al oxygen carrier for syngas production via chemical looping CH4-CO2 reforming".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42.52(2017):30509-30524. |
入库方式： OAI收割
来源：大连化学物理研究所
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