Preparation of Niobium(V) Oxide with Controlled Dispersity and Morphology
Glass and Ceramics(2022)
摘要
The effect of the annealing temperature and the chemical history of the precipitate on the morphology and phase composition of Nb 2 O 5 powder was investigated. The precipitate Nb 2 O 5 · n H 2 O and gel-like niobium citrate were obtained by solution methods. The synthesis of niobium oxide was conducted at temperatures 600, 1000, and 1200°C. The products of synthesis were analyzed by means of x-ray diffraction, scanning electron microscopy, x-ray microscopy, and differential thermal and thermogravimetric analysis. The annealing of niobium citrate at 600°C makes it possible to obtain niobium oxide particles with average size equal to about 70 nm, which is 4 – 6 times smaller than Nb 2 O 5 obtained from Nb 2 O 5 · n H 2 O precipitate.
更多查看译文
关键词
niobium oxide,synthesis,thermolysis,polymorphic modifications,phase composition
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要