FORMATION OF TETERAVALENT CERIUM PHOSPHATE IN SUSPENSION AND THEIR POWDER PROPERTIES

Abstract

The preparation process was studied to obtain phosphate material with large specific surface area. Tetravalent cerium phosphate was prepared from ammonium cerium nitrate and phosphoric acid. In this system, as a solvent, water and ethanol were used, the solvent volume was limited, propionic acid and n-butylamine were added. These preparation conditions had much influence on the ratio of cerium/phosphorus. By the addition of n-butylamine, specific surface area of cerium phosphate became large. The adsorption ratio of basic stinking gas increased with the addition of propionic acid and n-butylamine in suspension condition.