Preparation and characterization of neodymium hydroxide powder via the hydration method  

作　　者：Hongxi Li Chenggong Xu Qishan Yang 

机构地区：[1]School of Chemistry and Chemical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China

出　　处：《Chinese Journal of Chemical Engineering》2020年第7期1973-1980,共8页中国化学工程学报（英文版）

基　　金：financial support for this study by the Natural Science Foundation of Inner Mongolia(CN)(2016ZD05)。

摘　　要：The preparation of Nd(OH)3 powder by the direct hydration method using Nd2O3 as a raw material was studied,and the effects of stirring mode,H2O and Nd2O3 molar ratio,stirring rate,and reaction time on temperature change and conversion rate in a hydration system were analyzed.The reasonable process conditions for the direct hydration of Nd(OH)3 by Nd2O3 were then determined.Process,morphology,and structure were considered in the preparation of neodymium hydroxide powder,and its composition was investigated by X-ray powder diffraction,scanning electron microscopy,laser particle size analysis,thermogravimetric differential thermal analysis,and chemical analysis.It has been proved that the process is simple and feasible,in line with the concept of modern green chemistry,and the products also meet the market requirements.

关 键 词：Hydration method Neodymium hydroxide Powder preparation Influencing factor Green chemical engineering 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TQ133.3[化学工程—无机化工]