合成铌醇盐的条件、水解过程及其特性再分析

Analysis of Synthetical Conditions, Hydrolytic Process and Their Characteristics for Niobium Alkoxides

本文主要报道了以无水ＮｂＣｌ５为原料，在控制一定的制备条件下，经氨法合成了若干铌醇盐，并对其进行了各种鉴别和测试．研究了产物的水解及热处理过程，无定形产物至晶型Ｎｂ２Ｏ５的转化温度为５７３℃，并制得粒径约０．５μｍ，分布尚均匀的超细颗粒．溶胶涂覆于光纤成膜，可增加光纤强度．

This paper mainly reports how to synthesize certain niobium alkoxides under some conditions of controlling the preparation with waterless NbCl5 as raw materials by ammonia method. The synthetical parameters on the technique have been analyzed and the Nb alkoxides also identified by a variety of spectra. The process of the hydrolysis of the products and their heat treatment has also been studied to learn about the transformation temperature of 573℃ from the amorphous to the crystal of Nb2O5. The prepared particle size of the ultrafine powder is about 0.5 μm, the distribution of which was homogeneous. Films of Nb2O5 coated on the optical fibers from the sol can lead to increasing flexible strength of the fibers.