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。
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.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2010年第12期2341-2345,共5页
Chemical Industry and Engineering Progress
基金
国家高技术研究发展计划资助项目(2007AA03Z245)
