Knowledge Management System Of Institute of process engineering,CAS
| Kinetics of carbothermic reduction of MnO2 and catalytic effect of La2O3 | |
| Alternative Title | J. Univ. Sci. Technol. Beijing |
| Tang, HQ; Guo, ZC; Guo, XM; Zhang, SB | |
| 2002-02-01 | |
| Source Publication | JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
 |
| ISSN | 1005-8850 |
| Volume | 9Issue:1Pages:40-44 |
| Abstract | Kinetics of carbothermic reduction of manganese oxide and the catalytic effect of La2O3 on the reduction have been studied by the measurement of mass loss in N-2 atmosphere at different temperatures and followed by SEM analysis. It is concluded that the kinetics of carbothermic reduction of manganese oxide is divided into three stages: gas diffusion controlling stage, carbon gasification controlling stage and solid state diffusion controlling stage. La2O3 has catalytic effect on the reduction. The catalytic effect of La2O3 increases with the added amount of La2O3. SEM analysis shows that the catalytic mechanism is that La2O3 promotes the transfer of oxygen ions so that carbon gasifying is catalyzed and thus carbothermic reduction of MnO2 is catalyzed.; Kinetics of carbothermic reduction of manganese oxide and the catalytic effect of La2O3 on the reduction have been studied by the measurement of mass loss in N-2 atmosphere at different temperatures and followed by SEM analysis. It is concluded that the kinetics of carbothermic reduction of manganese oxide is divided into three stages: gas diffusion controlling stage, carbon gasification controlling stage and solid state diffusion controlling stage. La2O3 has catalytic effect on the reduction. The catalytic effect of La2O3 increases with the added amount of La2O3. SEM analysis shows that the catalytic mechanism is that La2O3 promotes the transfer of oxygen ions so that carbon gasifying is catalyzed and thus carbothermic reduction of MnO2 is catalyzed. |
| Keyword | Lanthanum Oxide Carbothermic Reduction Catalytic Effect |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology ; Physical Sciences |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MIXED PELLETS ; MANGANESE |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
| WOS ID | WOS:000174214800010 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5647 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 2.Univ Sci & Technol Beijing, Met Sch, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Tang, HQ,Guo, ZC,Guo, XM,et al. Kinetics of carbothermic reduction of MnO2 and catalytic effect of La2O3[J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,2002,9(1):40-44. |
| APA | Tang, HQ,Guo, ZC,Guo, XM,&Zhang, SB.(2002).Kinetics of carbothermic reduction of MnO2 and catalytic effect of La2O3.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,9(1),40-44. |
| MLA | Tang, HQ,et al."Kinetics of carbothermic reduction of MnO2 and catalytic effect of La2O3".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 9.1(2002):40-44. |
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| File Name/Size | DocType | Version | Access | License | ||
| KineticsofCarbot_省略_（1012KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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