Synthesis of nano-CeO2 powder by detonation method
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摘要: 爆轰合成过程中采用Ce(NO3)3·6H2O制备的可爆药剂，并利用X射线衍射仪(XRD)和透射电子显微镜(TEM)对合成的纳米CeO2粉末进行了检测，研究了起爆方式对于合成产物结晶化度、粒径和形貌的影响。结果表明，采用Ce(NO3)3·6H2O制备的可爆药剂，可以合成立方晶系的球形纳米CeO2; 提高可爆药剂的爆速，可有效降低纳米CeO2的粒径，得到球形化更好的纳米粒子。Abstract: The blasting agentwas prepared by choosing Ce(NO3)3·6H2O as themajor ingredient to synthesize nano-CeO2 powder by the detonation method.The as-synthesized productswere characterized by X-ray diffraction(XRD)and transmission electron microscopy(TEM).Thereby, the influences of the initiation manners on the crystallization, particle size andmorphology of the as-synthesized productswere analyzed.The results indicate that CeO2spherical nano-particleswhose crystal structure belongs to cubic system can be synthesized by using the blasting agent in which Ce(NO3)3·6H2O acting as themajor ingredient.And it is an effectivemethod to decrease the particle size and improve the spherification of nano-CeO2 by increasing the detonation velocity of the blasting agent.
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Key words:
- mechanics of explosion /
- nano-CeO2 powder /
- detonation synthesis /
- blasting agent /
- cubic system /
- Ce(NO3)3·6H2O /
- XRD /
- TEM
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表 1 混合炸药及爆轰产物的热化学参数[17]
Table 1. Thermochemistry parameters of mixed explosives and detonation products[17]
分子式 M/(g·mol-1) ΔHm/(kJ·mol-1) Ce(NO3)3·6H2O 434 -3 062.4 NH4NO3 80 -353.5 C18H38 254 -558.0 C24H44O6 428 -1 333.9 CeO2 172 -1 089.9 H2O(g) 18 -241.8 CO2 44 -393.5 CO 28 -110.5 N2 28 0 
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[1] 徐研, 王春云, 杨中辰. CeO2在紫外吸收玻壳中的应用研究[J].稀土, 2007, 28(3): 93-95. doi: 10.3969/j.issn.1004-0277.2007.03.024Xu Yan, Wang Chun-yun, Yang Zhong-chen. Applied research of CeO2 in ultraviolet absorption glass shells[J]. Chinese Rare Earths, 2007, 28(3): 93-95. doi: 10.3969/j.issn.1004-0277.2007.03.024 [2] Feng X D, Her Y S, LindaW, et al. CeO2 particles for chemicalmechanical planarization[J]. MRSProceedings, 2003, 767: 381-389. http://journals.cambridge.org/article_S1946427400135791 [3] Solanki PR, Dhand C, Kaushik A, etal. Nanostructured cerium oxide film for triglyceride sensor[J]. Sensors and Actuators B: Chemical, 2009, 141(2): 551-556. doi: 10.1016/j.snb.2009.05.034 [4] Ruiz-Morales JC, Canales-Vázquez J, Marrero-López D, et al. An all-in-one flourite-based symmetrical solid oxide fuel cell[J]. Journal of Power Sources, 2008, 177(1): 154-160. doi: 10.1016/j.jpowsour.2007.10.094 [5] Dong H K, Jung E C. A CuO-CeO2 mixed-oxide catalyst for CO clean-up by selective oxidation in hydrogen-richmixtures[J]. Catalysis Letters, 2003, 86(1/2/3): 107-112. doi: 10.1023/A%3A1022671327794 [6] La Ren-jiang, Hu Zhong-ai, Li Hu-lin, et al. Template synthesis of CeO2 ordered nanowire arrays[J]. Materials Science Engineering: A, 2004, 368(1/2): 145-148. http://www.sciencedirect.com/science/article/pii/S0921509303013145 [7] Yang Xin-hua, Shao Chang-lu, Liu Yi-chun, et al. Nanofibers of CeO2 via an electrospinning technique[J]. Thin Solid Films, 2005, 478(1/2): 228-231. http://adsabs.harvard.edu/abs/2005TSF...478..228Y [8] Miao Jian-jun, Wang Hui, Li Yu-ru, et al. Ultrasonic-induced synthesis of CeO2 nanotubes[J]. Journal of Crystal Growth, 2005, 281(2/3/4): 525-529. http://www.sciencedirect.com/science/article/pii/S0022024805005208 [9] Tetsuya H, Yasushi K, Yuuki T, et al. Mechanism of polishing of SiO2 films by CeO2 particles[J]. Journal of Non-Crys-talline Solids, 2001, 283(1/2/3): 129-134. http://www.sciencedirect.com/science/article/pii/S0022309301003647 [10] 陈杨, 陈建清, 陈志刚, 等.纳米磨料对硅晶片的超精密抛光研究[J].摩擦学学报, 2004, 24(4): 332-335. doi: 10.3321/j.issn:1004-0595.2004.04.010Chen Yang, Chen Jian-qing, Chen Zhi-gang, etal. Study on ultra-precision polishing of silicon wafer by nanosized abrasives[J]. Tribology, 2004, 24(4): 332-335. doi: 10.3321/j.issn:1004-0595.2004.04.010 [11] Izu N, Shin W, Murayama N. Fast response of resistive-type oxygen gas sensors based on nano-sized ceria powder[J]. Sensors and Actuators B: Chemical, 2003, 93(1/2/3): 449-453. http://www.sciencedirect.com/science/article/pii/S0925400503001679 [12] 陈丰, 陈志刚, 李霞章, 等.以碳球为模板合成氧化铈纳米中空球[J].硅酸盐学报, 2011, 39(3): 397-402. http://www.cnki.com.cn/Article/CJFDTotal-GXYB201103005.htmChen Feng, Chen Zhi-gang, Li Xia-zhang, et al. Synthesis of CeO2 hollow nanosphere using carbon sphere as template[J]. Journal of the Chinese Ceramic Society, 2011, 39(3): 397-402. http://www.cnki.com.cn/Article/CJFDTotal-GXYB201103005.htm [13] Zhu Zhao-wu, Long Zhi-qi, Zhang Shun-li, etal. Preparation of fine spherical particle sized ceria by precipitationmethod with ammonium bicarbonate[J]. Journal of Rare Earths, 2005, 23(1): 81-84. http://www.cnki.com.cn/Article/CJFDTotal-YXTB20050100I.htm [14] 李晓杰, 李瑞勇, 赵峥, 等.爆轰法合成纳米氧化铝的实验研究[J].爆炸与冲击, 2005, 25(2): 145-150. doi: 10.3321/j.issn:1001-1455.2005.02.009Li Xiao-jie, Li Rui-yong, Zhao Zheng, et al. Ultrafine aluminum oxide production by detonation[J]. Explosionand Shock Waves, 2005, 25(2): 145-150. doi: 10.3321/j.issn:1001-1455.2005.02.009 [15] 杜云艳, 李晓杰, 王小红, 等.硝酸铈爆轰制备球形纳米CeO2颗粒[J].爆炸与冲击, 2009, 29(1): 41-44. doi: 10.3321/j.issn:1001-1455.2009.01.008Du Yun-yan, Li Xiao-jie, Wang Xiao-hong, et al. Preparation of nano-sized CeO2 particles utilizing Ce(NO3)3·6H2O by detonation[J]. Explosion and Shock Waves, 2009, 29(1): 41-44. doi: 10.3321/j.issn:1001-1455.2009.01.008 [16] 张俊秀, 刘光烈, 刘桂涛.爆炸及其应用技术[M].北京: 兵器工业出版社, 1998: 17-18. [17] 陆明.工业炸药配方设计[M].北京: 北京理工大学出版社, 2002: 93-94. [18] 刘粤惠, 刘平安. X射线衍射分析原理与应用[M].北京: 化学工业出版社, 2003: 211-212. [19] Derobas A A, Medvedev A E, Reshetnyak A Y, et al. Detonation of emulsion explosives containing hollow microsphere[J]. Dok lady Physics, 2003, 48(4): 163-165. doi: 10.1134/1.1574370 -
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