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

• Published in: Rare metals 2018-02, Vol.37 (2), p.154-160
• Main Authors: Hu, Yan-Hong, Xu, Liang, Li, Mei, Wang, Xue-Feng, Liu, Zhao-Gang, Wang, Mi-Tang, Zhang, Xiao-Wei
• Format: Article
• Language: English
• Subjects: Agglomeration; Biomaterials; Cerium; Chemistry and Materials Science; Energy; Materials Engineering; Materials Science; Metallic Materials; Nanoscale Science and Technology; Physical Chemistry; Polyallylamine hydrochloride; Stirring; 碳酸盐; 花瓣; 操作条件; 行为; 铈; nano; 制造过程; 降水方法
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-017-0995-5

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.