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不同晶型结构纳米ZrO_2的稳定化制备 被引量:13

Preparation of Stable Nanosized ZrO_2 Particles with Different Crystallographic Structures
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摘要 采用共沉淀法制备了室温稳定存在的不同晶型纳米ZrO2粉体,用X射线衍射(XRD)、激光拉曼散射(Raman)、N2物理吸附、透射电镜(TEM)和动态光散射技术(DLS)等手段对其晶型结构、晶粒尺寸、比表面积和粒度分布进行了表征,研究了煅烧温度和改性剂掺杂量对晶型结构的影响。结果表明,无掺杂前驱体在850℃煅烧可得到m-ZrO2纳米粉体,比表面积为35.17 m2/g,晶粒尺寸为51.3nm;煅烧温度为600℃,Y2O3掺杂量为4.5%(摩尔分数)时纳米粉体的晶型结构为t-ZrO2,比表面积为39.01 m2/g,晶粒尺寸为19.2nm;煅烧温度为600℃,Y2O3掺杂量为8.5%时可得到比表面积为46.53 m2/g,晶粒尺寸为12.7 nm的c-ZrO2纳米粉体。 The ambient-temperature stable nanosized ZrO2 particles with different crystallographic structures were prepared by codeposition method. Their crystallographic structures, grain size, specific surface area and size distribution were characterized by powder X-ray diffraction (XRD), laser raman spectroscopy, N2 physical adsorption, transmission electron microscopy (TEM) and dynamic light scatter- ing (DLS) respectively. Therewith the effect of preparation temperature and modifier doping on the crystal- lographic structures of particles was investigated. The results show that the nanosized ZrO2 powders with- out Y203 doping calcined at 850℃ are monoclinic ZrO2 with an average grain size 51.3 nm and a specific surface area 35.17 m2/g; the powders doped with 4.5% Y2O3 (molar fraction) and calcined at 600℃ are te- tragonal ZrO2 with a specific surface area 39.01 m=/g and an average grain size 19.2 nm; the powders doped with 8.5% Y2O3 (molar fraction) and calcined at 600℃ are cubic ZrO2 with a specific surface area 46.53 m2/g and an average grain size 12.7 nm.
出处 《材料研究学报》 EI CAS CSCD 北大核心 2014年第2期139-143,共5页 Chinese Journal of Materials Research
基金 国家"863计划"项目基金2013AA065401资助项目~~
关键词 无机非金属材料 纳米ZRO2 晶型结构 掺杂改性 煅烧温度 inorganic non-metallic materials, nano-ZrO2, crystallographic structure, doping, calcinations temperature
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  • 1段国荣,杨绪杰,陆路德,汪信.溶胶-凝胶/共沸蒸馏法制备单相氧化锆超细粉[J].人工晶体学报,2006,35(2):327-331. 被引量:12
  • 2孙静,高濂,郭景坤.分散剂用量对几种纳米氧化锆粉体尺寸表征的影响[J].无机材料学报,1999,14(3):465-469. 被引量:79
  • 3Kalavathy Santhi,T.A. Revathy,V. Narayanan,Arumainathan Stephen.Synthesis and Characterization of Nano CuO-ZrO<sub>2</sub> Mixed Oxide[J].Advanced Materials Research.2013(678)
  • 4Yang Huan Zhang,Le Le Chen,Tai Yang,Hong Wei Shang,Li Сui Chen,Dong Liang Zhao.Characterization of Nano Ni/MgO-ZrO<sub>2</sub> Catalysts[J].Advanced Materials Research.2013(629)
  • 5Naoki Takahashi,Akihiko Suda,Ichiro Hachisuka,Masahiro Sugiura,Hideo Sobukawa,Hirofumi Shinjoh.Sulfur durability of NO x storage and reduction catalyst with supports of TiO 2 , ZrO 2 and ZrO 2 -TiO 2 mixed oxides[J].Applied Catalysis B Environmental.2006(1)
  • 6Ramón Moreno-Tost,Enrique Rodríguez Castellón,Antonio Jiménez-López.Cobalt–iridium impregnated zirconium-doped mesoporous silica as catalysts for the selective catalytic reduction of NO with ammonia[J].Journal of Molecular Catalysis A Chemical.2005(1)
  • 7R. C. Garvie,M. F. Goss.Intrinsic size dependence of the phase transformation temperature in zirconia microcrystals[J].Journal of Materials Science.1986(4)
  • 8P.Hartmann,T.Brezesinski,J.Sann.Defect chemistry of oxide nano-materials with high surface area:ordered mesoporous thin films of the oxygen storage catalyst CeO2–ZrO2[].ACS nano.2013
  • 9P.D.L. Mercera,J.G. van Ommen,E.B.M. Doesburg,A.J. Burggraaf,J.R.H. Roes.Stabilized tetragonal zirconium oxide as a support for catalysts Evolution of the texture and structure on calcination in static air[].Applied Catalysis.1991
  • 10P. Moles.Zirconium compounds in catalysis : the current position[].Applied Catalysis.1992

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