Study on Hydrothermal Synthesis Reaction Conditions and Denitration Performance of Bastnaesite AITranslate
Abstract AITranslate
Bastnaesite was synthesized with hydrothermal method using cerium nitrate,sodium bicarbonate and sodium fluoride as raw materials.The effects of reaction time on the surface properties and denitration activity of the synthetic bastnaesite were investigated,and the reasons for the different synthetic products caused by different sodium bicarbonate dosages were analyzed.The crystal structure,particle size and surface morphology of the bastnaesite were characterized by SEM and XRD.The denitration performance of the obtained bastnaesite was investigated by H2-TPR and simulated flue gas denitration experiment.The results show that the longer the reaction time,the larger the main particles of the synthesized bastnaesite,the higher the crystal growth degree and the easier the particle polymerization.The concentration of bicarbonate ions in the initial reactant determines the product composition.When bicarbonate ions are excessive,the synthesized product is relatively pure bastnaesite.When bicarbonate ions are insufficient,there is cerium fluoride in the product.The optimal conditions for preparing high-grade bastnaesite determined by experiments are reaction time of 2 h and molar ratio of sodium bicarbonate to cerium nitrate of 3∶1.
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DOI：
Chinese Library Classification Number:P618.92[天文地球—矿床学]
Citation Information:
Bastnaesite was synthesized with hydrothermal method using cerium nitrate,sodium bicarbonate and sodium fluoride as raw materials.The effects of reaction time on the surface properties and denitration activity of the synthetic bastnaesite were investigated,and the reasons for the different synthetic products caused by different sodium bicarbonate dosages were analyzed.The crystal structure,particle size and surface morphology of the bastnaesite were characterized by SEM and XRD.The denitration performance of the obtained bastnaesite was investigated by H2-TPR and simulated flue gas denitration experiment.The results show that the longer the reaction time,the larger the main particles of the synthesized bastnaesite,the higher the crystal growth degree and the easier the particle polymerization.The concentration of bicarbonate ions in the initial reactant determines the product composition.When bicarbonate ions are excessive,the synthesized product is relatively pure bastnaesite.When bicarbonate ions are insufficient,there is cerium fluoride in the product.The optimal conditions for preparing high-grade bastnaesite determined by experiments are reaction time of 2 h and molar ratio of sodium bicarbonate to cerium nitrate of 3∶1.
quote
| GB/T 7714-2015 | [1] LI Na, ZHANG Sheng-han, LI Hua, et al. Study on Hydrothermal Synthesis Reaction Conditions and Denitration Performance of Bastnaesite[J]. Rare Metals and Cemented Carbides, 2020(5): 48-54. |
| MLA | [1] LI Na, et al., "Study on Hydrothermal Synthesis Reaction Conditions and Denitration Performance of Bastnaesite." Rare Metals and Cemented Carbides, no. 5, 2020, pp. 48-54. |
| APA | [1] LI Na, ZHANG Sheng-han, LI Hua, WANG Jing-jing, ZHANG Kai, & WU Wen-fei. (2020). Study on Hydrothermal Synthesis Reaction Conditions and Denitration Performance of Bastnaesite. Rare Metals and Cemented Carbides(5), 48-54. |
| IEEE | [1] LI Na, ZHANG Sheng-han, LI Hua, WANG Jing-jing, ZHANG Kai, and WU Wen-fei, "Study on Hydrothermal Synthesis Reaction Conditions and Denitration Performance of Bastnaesite," Rare Metals and Cemented Carbides, no. 5, pp. 48-54, 2020. keywords: {bastnaesite;SCR catalyst;hydrothermal synthesis;reaction condition;microstructure;denitration performance} |