FORMATION OF TETERAVALENT CERIUM PHOSPHATE IN SUSPENSION AND THEIR POWDER PROPERTIES

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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.