| 摘要 |
The dispersions, with a high cerium concentration, are obtained by a process which consists:… - in preparing a cerium hydroxynitrate corresponding to the formula (I):… Ce(OH)x(NO3)y.nH2O (I)… in which:… - y is between 0.25 and 0.35… - x is such that x = 4-y… - n is between approximately 0 and approximately 20… obtained by reacting an aqueous solution of a cerium (IV) salt and of a base,… - in separating off the precipitate obtained,… - in washing it,… - in dispersing the product obtained in an acidic aqueous medium. …<??>The dispersions are highly suitable for an application in the field of catalysis, especially for the impregnation of catalyst supports. |
