Reduction of carbon dioxide into carbon by the active wustite and the mechanism of the reaction
文献类型：期刊论文
| 作者 | Zhang, CL; Li, S; Wu, TH; Peng, SY |
| 刊名 | materials chemistry and physics
 |
| 出版日期 | 1999-03-25 |
| 卷号 | 58期号:2页码:139-145 |
| 关键词 | wustite magnetite reduction of carbon dioxide carbon eutectoid decomposition Fe3C |
| 英文摘要 | normal wustite (fe0.94o) was prepared by rapidly decomposing ferrous oxalate in vacuum at 923 k. normal wustite, which was kept in a he atmosphere at 573 k for 10 min, undergoes eutectoid decomposition into active wustite (fe0.98o) and stoichiometric magnetite. compared with normal wustite, active wustite is more unstable and it is active for decomposing carbon dioxide. carbon dioxide (1.013 x 10(5) pa) was almost completely reduced into carbon by active wustite at 573 k, which was associated with the transformation of active wustite into stoichiometric magnetite. the oxygen in co2 is considered to be transferred to the surface of wustite in the form of o2- ions and then these ions react with excess iron ions from the inside of the oxide to form the spinel structure. in order to maintain the electrical neutrality of the oxide, active wustite releases electrons, which will move to the surface and be donated to the carbon in co2; therefore the carbon is reduced. the reduction of co2 into carbon is undergone via two steps: co2 --> co --> c, the former step, co2 --> co, is the control step of the reaction speed and co is the intermediate of this reaction, because the speed of co conversion is faster than that of co2 when co was produced in the process of the reaction. during the reaction, the partial pressure of co2 decreased gradually with increasing reaction time and finally the reaction system became a vacuum. elevating reaction temperature, the speed of co2 decomposition increased and the content of co produced in the reaction process decreased. (c) 1999 elsevier science s.a. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | materials science, multidisciplinary |
| 研究领域[WOS] | materials science |
| 关键词[WOS] | cation-excess magnetite ; decomposition ; ferrite |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000079386300007 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138204]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China 3.Chinese Acad Sci, Shanxi Inst Coal Chem, Taiyuan 030001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, CL,Li, S,Wu, TH,et al. Reduction of carbon dioxide into carbon by the active wustite and the mechanism of the reaction[J]. materials chemistry and physics,1999,58(2):139-145. |
| APA | Zhang, CL,Li, S,Wu, TH,&Peng, SY.(1999).Reduction of carbon dioxide into carbon by the active wustite and the mechanism of the reaction.materials chemistry and physics,58(2),139-145. |
| MLA | Zhang, CL,et al."Reduction of carbon dioxide into carbon by the active wustite and the mechanism of the reaction".materials chemistry and physics 58.2(1999):139-145. |
入库方式： OAI收割
来源：大连化学物理研究所
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