化工进展

• 材料科学与技术 • 上一篇    下一篇

Nb2O5?nH2O/C的制备与表征

李伟伟,张向军,卢世刚   

  1. 北京有色金属研究总院能源材料与技术研究所,北京 100088
  • 出版日期:2010-12-05 发布日期:2010-12-05

Preparation and characterization of Nb2O5?nH2O/C

LI Weiwei,ZHANG Xiangjun,LU Shigang   

  1. Energy Materials and Technology Research Institute,Beijing General Research Institute for Nonferrous Metals,Beijing 100088,China
  • Online:2010-12-05 Published:2010-12-05

摘要:

在草酸铌水溶液中加入乙二醇制备碳负载的纳米级氧化铌颗粒,采用TG/DSCFTIRXRDHRTEM等研究了反应产物和反应过程。研究表明:Nb2O5·nH2O中同时存在吸附水、结晶水和结构水,均匀地分布在炭黑表面;反应过程是乙二醇和草酸铌首先形成螯合物,此螯合物在加热条件下分解,分解产物与氨水进行化学反应产生含水氧化铌。

Abstract:

Nano-Nb2O5·nH2O/C was prepared in a mixed solution of glycol and niobium oxalate. The reaction products and reaction process were characterized by TG/DSCFTIRXRD and TEM. The results showed that Nb2O5·nH2O which contains adsorbed watercrystal water and structural water was distributed on the surface of C uniformly. The reaction process was niobium oxalate and glycol formed niobium chelate complexwhich was decomposed by heatingand then Nb2O5·nH2O was obtained by the reaction of the decomposition product and ammonia.

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