Hydrothermal Preparation of Rare Earth-based Catalysts and Study on their NH_3-SCR Denitration Performance AITranslate
Abstract AITranslate
The Bayan Obo rare earth concentrate was used as the active components of the catalyst. The elements in the ore are extracted by nitric acid with hydrothermal method, and then loaded on the activated carbon treated with nitric acid. High-temperature calcination was followed to obtain rare earth-based com- posite catalyst for selective catalytic reduction of NO with NHa as the reductant at 100-350 ℃. The effects of hydrothermal temperature and nitric acid concentration on acid leaching of rare earth concentrate were investigated as well as the effects of nitric acid concentration and calcination temperature on denitra- tion performance of the prepared catalyst. The phase, morphology and composition of the catalyst were also characterized. The results show that the optimal hydrothermal reaction temperature is 180 ℃. The higher the concentration of nitric acid, the higher the digestion rate of rare earth concentrate. The catalyst pre- pared by 15 mol/L nitric acid digestion and 600 ℃ calcination has the best denitration performance with de- nitration rate of more than 90% at 250-300 ℃. Due to the presence of amorphous active material and the formation of composite metal oxide,the catalyst has a high denitration activity.
KeyWords AITranslate
1贾双燕,路涛,李晓芸,宁献武.选择性催化还原烟气脱硝技术及其在我国的应用研究[J].电力环境保护,2004,20(1):19-21. 被引量：40
2高林,李辉,单历元,黄佳,于有海,闵永刚.燃烧烟气脱硝技术的研究进展[J].化学工程,2017,45(3):15-19. 被引量：15
3王明洪,王亮亮,刘俊,费兆阳,陈献,汤吉海,崔咪芬,乔旭.过渡金属对选择性催化还原脱硝CeO_2@TiO_2催化剂低温活性的促进作用[J].燃料化学学报,2017,45(4):497-504. 被引量：7
4王艳,李兆强.含稀土NH_3-SCR脱硝催化剂研究进展[J].稀土,2016,37(4):120-128. 被引量：13
5高莲,马晓驰.选择性催化还原废气脱硝技术[J].化工环保,2005,25(5):358-360. 被引量：17
1焦坤灵,赵阳国,武文斐,王振峰,龚志军.SO2对稀土精矿催化剂NH3-SCR脱硝催化性能的影响[J].化工学报,2019,70(12):4645-4653. 被引量：3
2王建,龚志军,徐国栋,武文斐.稀土尾矿催化脱硝可行性实验研究[J].稀有金属与硬质合金,2020,48(2):22-27.
1李娜,张胜寒,李华,王晶晶,张凯,武文斐.合成CeCO3F的微观结构和脱硝性能研究[J].中国稀土学报,2020,38(5):610-616. 被引量：1
2张呈祥,赵长玉,王安丽,荣文娜.稀土基SCR脱硝催化剂的工业化生产及应用[J].化工管理,2021(9):98-99.
3孙锦昌,任翠涛,赵明新,田春雨,迟姚玲,赵田田,王虹.Cu/Hβ催化剂NH_(3)选择性催化还原NO性能研究[J].燃料化学学报(中英文),2023,51(6):823-831.
1韦鹏,杜愎刚,刘海洋,张振涛.柴油机SCR系统试验台架改进设计[J].内燃机与动力装置,2017,34(6):33-35. 被引量：1
2纪国力,刘斌.电感耦合等离子体质谱法测定不同产地红花中10种重金属及有害元素[J].中国当代医药,2018,25(16):23-27. 被引量：6
3陈熙,王爽,马胜奎,赵博武,王文强,赵楚,张彬.PVDF/PDA/Ag催化膜对亚甲基蓝的催化降解[J].天津工业大学学报,2018,37(2):14-19.
4尚校兰,李宏宇,杨伊婷,梁菁菁.化学法和生物法制备巨菌草腐植酸的比较[J].草业科学,2018,35(1):76-84. 被引量：1
5叶永洲,沈飞,王红宁,陈若愚,孙林.锰活性物质负载Ti掺杂SiO_2纳米管复合催化剂的制备及其NH_3-SCR反应活性（英文）[J].无机化学学报,2018,34(11):2088-2096.
6张金亮.玻璃纤维滤筒铅本底值分析及降低方法探讨[J].工程建设与设计,2018(8):167-168.
7田昀,刘庆岭,纪娜,吕学斌,马德刚,宋春风.挥发性污染物二硫化碳处理技术[J].环境工程,2018,36(7):87-92. 被引量：7
8陈利强,孙晶,刘立红,刘冬影,历亳,袁福龙.焙烧温度对镍锰钛氧化物选择催化还原NO活性的影响[J].黑龙江大学工程学报,2018,9(2):33-37. 被引量：3
9盖洋洋,吴波,熊源泉.基于凹凸棒土催化双氧水分解的低温燃煤烟气脱硝[J].化工进展,2018,37(4):1608-1615. 被引量：4
10王金云,李小娜,吴忠忠,凤海元.ICP-AES测定土壤污染详查样品中有色重金属元素铜锌铬镍钒[J].世界有色金属,2018,43(13):208-209. 被引量：5
Basic Information:
DOI：
Chinese Library Classification Number:TQ426.83[化学工程]
Citation Information:
The Bayan Obo rare earth concentrate was used as the active components of the catalyst. The elements in the ore are extracted by nitric acid with hydrothermal method, and then loaded on the activated carbon treated with nitric acid. High-temperature calcination was followed to obtain rare earth-based com- posite catalyst for selective catalytic reduction of NO with NHa as the reductant at 100-350 ℃. The effects of hydrothermal temperature and nitric acid concentration on acid leaching of rare earth concentrate were investigated as well as the effects of nitric acid concentration and calcination temperature on denitra- tion performance of the prepared catalyst. The phase, morphology and composition of the catalyst were also characterized. The results show that the optimal hydrothermal reaction temperature is 180 ℃. The higher the concentration of nitric acid, the higher the digestion rate of rare earth concentrate. The catalyst pre- pared by 15 mol/L nitric acid digestion and 600 ℃ calcination has the best denitration performance with de- nitration rate of more than 90% at 250-300 ℃. Due to the presence of amorphous active material and the formation of composite metal oxide,the catalyst has a high denitration activity.
quote
| GB/T 7714-2015 | [1] WANG Kun, GONG Zhi-jun, WU Wen-fei. Hydrothermal Preparation of Rare Earth-based Catalysts and Study on their NH_3-SCR Denitration Performance[J]. Rare Metals and Cemented Carbides, 2018(5): 37-42. |
| MLA | [1] WANG Kun, et al., "Hydrothermal Preparation of Rare Earth-based Catalysts and Study on their NH_3-SCR Denitration Performance." Rare Metals and Cemented Carbides, no. 5, 2018, pp. 37-42. |
| APA | [1] WANG Kun, GONG Zhi-jun, & WU Wen-fei. (2018). Hydrothermal Preparation of Rare Earth-based Catalysts and Study on their NH_3-SCR Denitration Performance. Rare Metals and Cemented Carbides(5), 37-42. |
| IEEE | [1] WANG Kun, GONG Zhi-jun, and WU Wen-fei, "Hydrothermal Preparation of Rare Earth-based Catalysts and Study on their NH_3-SCR Denitration Performance," Rare Metals and Cemented Carbides, no. 5, pp. 37-42, 2018. keywords: {rare earth-based catalyst;rare earth concentrate;acid leaching;denitration;NH3-SCR} |