C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/42 (2006.01) C07C 51/41 (2006.01) C08F 4/52 (2006.01) C08F 36/04 (2006.01) C08F 36/06 (2006.01) G01N 21/35 (2006.01) C07C 53/126 (2006.01)
Patent
CA 2581987
A process is described for the purification of lanthanide carboxylates which comprises a step in which the hydrocar-bon solution deriving from the synthesis of lanthanide car-boxylate, containing said carboxylate and impurities of the corresponding carboxylic acid and/or water, is treated with an aqueous solution of a base in order to obtain a pH of the aqueous phase ranging from 9.0 to 12.2 and/or a step in which the hydrocarbon solution containing lanthanide car-boxylate is treated with a solid selected from Na2SO4, MgSO4, Mg(ClO4)2, molecular sieves 3 .ANG., molecular sieves 4 .ANG., molecular sieves 5 .ANG. and molecular sieves 13 X. Analytical methods are also described, which allow the pu-rity of the lanthanide carboxylates to be non-destructively measured.
Biagini Paolo
Bonoldi Lucia
Cambisi Franco
Gila Liliana
Salvalaggio Mario
Polimeri Europa S.p.a
Robic
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