以硫酸钪为母盐, 尿素为沉淀剂, 采用微波加热方式合成了水合碱式碳硫酸钪前驱体。用差式扫描量热法(DSC)、热重分析(TG)、红外光谱(IR)、X-射线衍射(XRD)分析了加热过程中前驱沉淀物的物相变化。采用高温煅烧和高能微波辐照两种方法制备了Sc2O3粉体。结果表明, 将前驱沉淀物分别在1000℃煅烧3 h和在900℃微波辐照20 min, 均制备出高纯、超细、粒度分布窄、分散性好、近似球形的Sc2O3纳米粉。
The hydrated basic carbonate-sulfate precursor was synthesized using scandium sulfate as mother liquor and urea as a precipitating agent by a microwave heating approach. The phase transformation processes of the precipitate precursor were analyzed by DSC/TG, FTIR and XRD. Two synthesis methods of Sc2O3 powder were compared. The results showed that highly pure, ultrafine, well dispersed, narrow particle size distribution and spherical Sc2O3 nanopowders can be obtained by calcination at 1000oC for 3 h in resistance furnace or irradiation at 900oC for 20 min in microwave furnace.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | PENG Chao, New scandium oxide extraction process, Chemical Engineering Design Communications, 31(2), 39(2005)(彭超, 氧化钪提取新工艺探讨, 化工设计通讯, |
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