[EN] DIALKYLDIAZA-TETRAALKYLOCTANE DIAMIDE DERIVATIVES USEFUL FOR THE SEPARATION OF TRIVALENT ACTINIDES FROM LANTHANIDES AND PROCESS FOR THE PREPARATION THEREOF<br/>[FR] NOUVEAU COMPOSÉ POUR LA SÉPARATION D'ACTINIDES TRIVALENTS À PARTIR DE LANTHANIDES ET PROCÉDÉ DE PRÉPARATION
申请人:SECRETARY DEPT OF ATOMIC ENERGY
公开号:WO2011024184A1
公开(公告)日:2011-03-03
The novel lipophilic metal extractants of the class dialklydiaza-tetraalkyloctanediamide (DADA) useful to selectively separate trivalent americium (sup. 241 Am) from trivalent lanthanides are represented by the formula (1): Wherein R is a C1 to C5 normal alkyl and R' is a C4 to C8 normal and branched alkyl group. The compounds are synthesized at high yield and purity by the reaction of corresponding N,N'-dialkylethylenediamine and N,N-dialkyl-2-chloroacetamide. The separation is achieved by utilizing the soft-soft interaction between the trivalent actinides and 'N' atoms of the extractant. Both soft donor "n" and hard donor 'O' sites are incorporated in the molecule for better extraction of trivalent actinides over trivalent lanthanides. Thus, this molecule can be used as selective extractant to separate trivalent actinides from trivalent lanthanides.
这类化合物为类二烷基二氮杂四烷基辛二胺二酰胺(DADA)的新型亲脂性金属萃取剂,可用于选择性地将三价镅(241Am)与三价镧系元素分离。这些化合物由以下式表示(1):其中R为C1到C5的正链烷基,R'为C4到C8的正支链烷基。这些化合物通过相应的N,N'-二烷基乙二胺和N,N-二烷基-2-氯乙酰胺的反应高产率高纯度合成。通过利用三价锕系元素与萃取剂的“N”原子之间的软-软相互作用实现分离。分子中同时包含软给体“n”和硬给体“O”位点,以更好地萃取三价锕系元素而不是三价镧系元素。因此,该分子可作为选择性萃取剂用于将三价锕系元素与三价镧系元素分离。