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/DSC，FTIR，XRD and TEM. The results showed that Nb₂O₅·nH₂O which contains adsorbed water，crystal water and structural water was distributed on the surface of C uniformly. The reaction process was niobium oxalate and glycol formed niobium chelate complex，which was decomposed by heating，and then Nb₂O₅·nH₂O was obtained by the reaction of the decomposition product and ammonia.

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/DSC、FTIR、XRD、HRTEM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，且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。