| Production and Characterization of Chromium Oxide (Cr2O3) via a Facile Combination of Electrooxidation and Calcination | |
Tian, Sen; Ye, Xuemei; Dong, Yaping ; Li, Wu; Zhang, Bo; Li, Bo; Feng, Haitao
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| 2019-09 | |
| 发表期刊 | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
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| ISSN | 1452-3981 |
| 卷号 | 14期号:9页码:8805-8818 |
| 摘要 | To synthesize Cr2O3 from ferrochromium, the electrolysis of ferrochromium in an electrolyzing cell and the properties of Cr2O3 prepared by thermal decomposition of (NH4)(2)CrO(4 )were studied. Experimental results showed that with a 1:5 molar ratio of NH3 center dot H2O:2CrO(4)(2-) and current density of 140 A/m(2) at room temperature, Cr and Fe can be completely separated by solid-liquid separation, and (NH4)(2)CrO4 can be obtained. The optimized current efficiency was 62%. The four-step thermal decomposition process of (NH4)(2)CrO4 was analyzed by TG-DTA. The XRD and FTIR results proved that crystalline Cr2O3 with a fine particle size was obtained. Spherical Cr2O3 with a particle size of 71 similar to 216 nm and a specific surface area of 4 similar to 38 m(2)/g was confirmed by SEM and BET. UV-Vis results proved that Cr2O3 presented bright green (L*=34.78 similar to 49.97, a*=0.91 similar to-14.73, and b*=6.08 similar to 17.92), and the forbidden band width was 1.91 similar to 2.25 eV. The purity of Cr2O3 was over 99%. |
| DOI | 10.20964/2019.09.21 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/34069 |
| 专题 | 盐湖资源综合利用工程技术中心 中国科学院青海盐湖研究所 |
| 推荐引用方式 GB/T 7714 | Tian, Sen,Ye, Xuemei,Dong, Yaping,et al. Production and Characterization of Chromium Oxide (Cr2O3) via a Facile Combination of Electrooxidation and Calcination[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2019,14(9):8805-8818. |
| APA | Tian, Sen.,Ye, Xuemei.,Dong, Yaping.,Li, Wu.,Zhang, Bo.,...&Feng, Haitao.(2019).Production and Characterization of Chromium Oxide (Cr2O3) via a Facile Combination of Electrooxidation and Calcination.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,14(9),8805-8818. |
| MLA | Tian, Sen,et al."Production and Characterization of Chromium Oxide (Cr2O3) via a Facile Combination of Electrooxidation and Calcination".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 14.9(2019):8805-8818. |
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