Global to push GA events into
skip to main content

Title: Preparation and use of tetra-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents

Preparation and use of tetra-C-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents. Tetra-C-alkyl derivatives of cobalt dicarbollide, Co(C{sub 2}R{sub 2}B{sub 9}H{sub 9}){sub 2}{sup {minus}}(CoB{sub 2}R{sub 4}{sup {minus}}; R=CH{sub 3} and C{sub 6}H{sub 13}) are demonstrated to be significant cesium and strontium extractants from acidic and alkaline solutions into non-toxic organic solvent systems. Extractions using mesitylene and diethylbenzene are compared to those with nitrobenzene as the organic phase. CoB{sub 2}-hexyl{sub 4}{sup {minus}} in diethylbenzene shows improved selectivity (10{sup 4}) for Cs over Na in acidic solution. In dilute alkaline solution, CoB{sub 2}-hexyl{sub 4}{sup {minus}} extracts Cs less efficiently, but more effectively removes Sr from higher base concentrations. A general synthesis of tetra-C-alkyl cobalt dicarbollides is described. 6 figs.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
441859
Assignee:
Univ. of California, Los Alamos, NM (United States) PTO; SCA: 052001; PA: INS-97:004434; EDB-97:039028; SN: 97001739254
Patent Number(s):
US 5,603,074/A/
Application Number:
PAN: 8-412,384
Contract Number:
W-7405-ENG-36
Resource Relation:
Other Information: PBD: 11 Feb 1997
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; CESIUM; STRONTIUM; SOLVENT EXTRACTION; CHELATING AGENTS; RADIOACTIVE WASTE PROCESSING; CHEMICAL PREPARATION; COBALT COMPOUNDS