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水热法制备高纯超细CeO_2-ZrO_2复合氧化物 被引量:16

Preparation of High Purity and Superfine CeO_2-ZrO_2 by Hydrothermal Method
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摘要 Superfine composite powders of CeO2-ZrO2 (CZ) and CeO2-ZrO2-La2O3 (CZL) were prepared by hydrothermal method. The effects of pH?temperature and time for hydrothermal process on the performance of the resulting powders were studied. The optimized reaction parameters were on follows: the precursor′s pH≈9.0, hydrothermal temperature of 200 ℃ holding for 2 h. Thermal stable powders with average particle size smaller than 10 nm and specific surface area of 171 m2·g-1 were obtained. A BET specific surface area was still at 44 m2·g-1 after calcination at 1 000 ℃ for 6 hours. Superfine composite powders of CeO2-ZrO2 (CZ) and CeO2-ZrO2-La2O3 (CZL) were prepared by hydrothermal method. The effects of pH,temperature and time for hydrothermal process on the performance of the resulting powders were studied. The optimized reaction parameters were on follows: the precursor's pH approximate to 9.0, hydrothermal temperature of 200 T holding for 2 h. Thermal stable powders with average particle size smaller than 10 nm and specific surface area of 171 m(2 .) g(-1) were obtained. A BET specific surface area was still at 44 m(2 .) g(-1) after calcination at 1000 degrees C for 6 hours.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2005年第8期1227-1230,共4页 Chinese Journal of Inorganic Chemistry
基金 广东省重大专项(No.A10701) 广东省自然科学基金团队项目(No.04205301)资助。
关键词 水热法 氧化铈 氧化锆 hydrothermal method ceria zirconia supercritical dryness
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参考文献5

  • 1Fornaiero P, Monte R D, Hao C R, et al. J. Catal., 1995,151:168-177
  • 2冯长根,张江山,王亚军.低温合成纳米级固溶体Ce_(1-x)Zr_xO_2的研究[J].硅酸盐学报,2004,32(4):502-506. 被引量:10
  • 3XIELi-Ying(谢丽英) WEIZhu-Jun(魏绪钧) XUXiu-Zhi(徐秀芝).Xitu(Rare Earth),1996,17(4):24-29.
  • 4Dell Agli G, Mascolo G. J. Mater. Sci., 2000,35(3):661-665
  • 5YANG Chuan-Zhen(杨传铮), XIE Da-Cai(谢达材), CHEN Kui-Zun(陈癸尊). Phase Di ffraction Analysis(物相衍射分析). Beijing: Metallurgical Industry Press, 1989,189-190

二级参考文献18

  • 1方小红,董强,沈玉华,彭定坤,刘杏芹,孟广耀.单分散球形Sm掺杂的CeO_2粉体的均相沉淀法制备[J].硅酸盐学报,2002,30(z1):22-25. 被引量:6
  • 2EGUCHI K, SETOGUDHI T, INOUE T, et al. Electrical properties of ceria based oxides and their application to solid oxide fuel cell[J]. Solid StateIonics, 1992, 52: 165-172.
  • 3STUBICAN V S, HINK R C, RAY S P. Phase equilibria and ordering in the system ZrO2Y2O3 [J]. J Am Ceram Soc, 1978, 61: 17-21.
  • 4HIRATA T. Raman active modes and the tetragonalmonoclinic phase transition in ZrO2 doped with 12 mol% CeO2[J]. J Phys Chem Solids, 1995, 56(7): 951-957.
  • 5GONZALEZVELASCO J R, GUTIERREZORITIZ M A, MARC J L. Contribution of cerium/zirconium mixed oxides to the activity of a new generation of three way catalysts [J]. Appl Catal B: Environ, 1999(22): 167-178.
  • 6FORNASIERO P, DI MONTE R, RANGA RAO G, et al. Rh Loaded CeO2ZrO2 solid solutions as highly efficient oxygen exchangers: dependence of the reduction behavior and the oxygen storage capacity on the structural properties [J]. J Catal, 1995, 151(1): 168-177.
  • 7HORI C E, PERMANA H, SIMON K Y, et al. Thermal stability of oxygen storage properties in a mixed CeO2ZrO2 system [J].Appl Catal B: Environ, 1998, 16: 105-117.
  • 8DURAN P, GONZALEZ M, MOURE C, et al. A new tentative phase equilibrium diagram for the ZrO2CeO2 system in air[J]. J Mater Sci, 1990, 25(12):5 001-5 006.
  • 9YASHIMA, MASATOMO, ARASHI, et al. Raman scattering study of cubic tetragonal phase transition in Zr1-xCexO2 solid solution[J]. J Am Ceram Soc, 1994, 77(4): 1 067-1 071.
  • 10LIU W, FLYTZANISTEPHANOPOULOS M. Total oxidation of carbon monoxide and methane over transition metal fluorite oxide composite catalysts [J]. J Catal, 1995, 153(1): 317-332.

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