Agglomeration behavior of petal-shaped cerium carbonate with different operating conditions  

作　　者：Yan-Hong Hu Liang Xu Mei Li Xue-Feng Wang Zhao-Gang Liu Mi-Tang Wang Xiao-Wei Zhang 

机构地区：[1]School of Materials and Metallurgy, Inner Mongolia University of Science and Technology [2]Key Laboratory of Green Extraction and Efficient Utilization of Light Rare-earth Resources, Ministry of Education

出　　处：《Rare Metals》2018年第2期154-160,共7页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.21666029 and 201066010);the Science Foundation of Inner Mongolia (No. 2016MS0223)

摘　　要：Agglomeration phenomenon can often be observed during the fabrication process of petal-shaped, nano-sized Ce2（CO3）3 powders. This kind of powder was produced by liquid-phase precipitation method with the template agent of polyallylamine hydrochloride （PAH）. In this study, the effects of the polymer concentration, pH value, and stirring speed on the agglomeration phe- nomenon of cerium carbonate were investigated. On the condition that the concentration of PAH is 0.9 g·L^-1, the pH value of the adjusting solution is 3-4, the final pH value is 8-10, and the stirring speed is 300-400 r·min^-1, it is found that the agglomeration phenomenon of Ce2（CO3）3 particles can be greatly prevented and the regular petal- shaped particles are formed.Agglomeration phenomenon can often be observed during the fabrication process of petal-shaped, nano-sized Ce2（CO3）3 powders. This kind of powder was produced by liquid-phase precipitation method with the template agent of polyallylamine hydrochloride （PAH）. In this study, the effects of the polymer concentration, pH value, and stirring speed on the agglomeration phe- nomenon of cerium carbonate were investigated. On the condition that the concentration of PAH is 0.9 g·L^-1, the pH value of the adjusting solution is 3-4, the final pH value is 8-10, and the stirring speed is 300-400 r·min^-1, it is found that the agglomeration phenomenon of Ce2（CO3）3 particles can be greatly prevented and the regular petal- shaped particles are formed.

关 键 词：Cerium carbonate AGGLOMERATION Polyallylamine hydrochloride Operating conditions 

分 类 号：O614.332[理学—无机化学]