C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/374, 362/40
C22B 3/44 (2006.01) B01D 15/04 (2006.01) B01J 45/00 (2006.01) C02F 1/62 (2006.01) C22B 3/46 (2006.01)
Patent
CA 2007311
The process of the invention comprises removing and concentrating certain ions, such as the transition metal ions, from solutions thereof admixed with other ions which may be present in much higher concentrations by forming a complex of the desired ion(s) with a compound (see formula I) wherein B and D are each a radical selected from the group consisting of N(R3), N(R3)CH2, O. OCH2, S and SCH2, with the further proviso that if B is selected from the group consisting of O, OCH2, S and SCH2, then D must be selected from the group consisting of N(R3) and N(R3)CH2 ; E is a radical selected From the group consisting of H, NH(R3), SH, OH, lower alkyl, and N(R3)(CH2CH(R1)CH2O] b(CH2)a SiYZ(O- matrix)]; Y and Z are radicals selected from the group of Cl, OCH3, OC2H5, methyl, ethyl and halogenated substituents thereof, and O-matrix; R1 is a radical selected from the group consisting of H, SH, OH, lower alkyl and aryl such as phenyl, naphthyl and pyridyl; R2 is a radical selected from the group consisting H and lower alkyl; R3 is a radical selected from the group consisting of H, lower alkyl and aryl such as phenyl, naphthyl and pyridyl; a is 2 to about 10; b is 0 or 1; c is 1 to about 2000; d is 0 to about 2000; 2 and where matrix is selected from the group consisting of sand, silica gel, glass, glass fibers, alumina, nickel oxide, zirconia, and titania. The complex which is formed is then broken by contacting a receiving liquid with the complex to remove and concentrate the desired ion(s) in solution in the receiving liquid. The concentrated ions can then be analyzed or recovered from the receiving liquid using well known procedures.
Biernat Jan F.
Bochenska Maria
Bradshaw Jerald S.
Bruening Ronald L.
Izatt Reed M.
Brigham Young University
Smart & Biggar
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