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

Abstract Agglomeration phenomenon can often be observed during the fabrication process of petal‐shaped, nano‐sized Ce 2 (CO 3 ) 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 phenomenon 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 Ce 2 (CO 3 ) 3 particles can be greatly prevented and the regular petal‐shaped particles are formed.