通过水解硫酸氧钒,在不加入还原剂条件下合成了三氧化二钒粉体,研究不同烧结温度以及气氛对产物的影响;对产物进行X射线衍射分析、扫描电镜形貌观察和激光粒度仪粒度检测,结果表明:在不同的气氛中,以5℃/min的升温速度,由室温升至800℃并保温3h得到的产物不同.在氩气流量为160 mL/min的气氛中得到V4O7粉体;而在真空中煅烧的产物是V2O3粉体,其在玛瑙研钵中研磨20 min平均直径为452 nm.确定了水解硫酸氧钒获得氢氧化钒沉淀的最佳pH值约为4.
参考文献
| [1] | Downing J H .Vanadium containing addition agent and process for producing same[P].Google Patents,1967. |
| [2] | 夏广斌,杨军,彭虎,黄莉玲.微波还原法制备三氧化二钒的工艺研究[J].矿冶工程,2010(06):72-74. |
| [3] | 胡克俊.国内外三氧化二钒提取工艺发展状况[J].钢铁钒钛,1995(04):55. |
| [4] | Calatayud M.;Andres J.;Beltran A.;Silvi B. .A theoretical study on the structure, energetics and bonding of VOx+ and VOx (x=1-4) systems[J].Chemical Physics Letters,2001(6):493-503. |
| [5] | Munoz-Rojas D;Baudrin E .Synthesis and electroactivity of hydrated and monoclinic rutile-type nanosized VO2[J].Solid state ionics,2007(21/22):1268-1273. |
| [6] | Ji Qi;Guiling Ning;Yuan Lin .Synthesis, characterization, and thermodynamic parameters of vanadium dioxide[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(8/9):2300-2307. |
| [7] | Li G;Yuan NY;Li JH;Chen XS .Thermal simulation of micromachined bridge and self-heating for uncooled VO2 infrared microbolometer[J].Sensors and Actuators, A. Physical,2006(2):430-435. |
| [8] | Li Guicun;Chao Kun;Peng Hongrui et al.Low-valent vanadium oxide nancstructures with controlled crystal structures and morphologies[J].Inorganic Chemistry,2007,46(14):5787-5790. |
| [9] | Guinneton, F;Sauques, L;Valmalette, JC;Cros, F;Gavarri, JR .Role of surface defects and microstructure in infrared optical properties of thermochromic VO2 materials[J].The journal of physics and chemistry of solids,2005(1):63-73. |
| [10] | Zifei Peng;Yuan Wang;Yanyun Du .Phase transition and IR properties of tungsten-doped vanadium dioxide nanopowders[J].Journal of Alloys and Compounds,2009(2):537-540. |
| [11] | Z.Gui;R.Fan;X.H.Chen;Y.C.Wu .A New Metastable Phase of Needle-Like Nanocrystalline VO_2·H_2O and Phase Transformation[J].International Journal of Quantum Chemistry,2001(2):250-254. |
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