Studi Ekstraksi Sinergi Kobalt(II) dengan Campuran Acyl-Pyrazolon dan Eter Mahkota dalam Lingkungan Stronsium(II)
ABSTRACT: Synergistic
extraction of cobalt(II) with mixture of acyl-pyrazolon (HL) and crown-ether
(E) in the Sr(NO3)2 environment has been studied. In this research, HPMBP
(phenyl-1-methyl-3-benzoil-4-pyrazolon-5) was used, with three different kinds
of crown-ether, i.e. (benzo-15-crown-5),
DB18C6 (dibenzo-18-crown-6) and DB24C8 (dibenzo-24-crown-8), in chloroform. In
the bulk environment of stronsium, a
cobalt coextraction and stronsium occured with species ESrNO3+,Co(PMBP)3-, and
E = B15C5, while Co(PMBP)2E and ESr,Co(PMBP3)2, with E = DB18C6. There was
no coextraction when using crown-ether
DB24C8, with the extracted species Co(PMBP)2E. Values of extraction constant
presented in log Kex were -6.08 (B15C5), - 4.51, -12.55 (DB18C6), and - 4.57 (DB24C8),
respectively.
Penulis: Bambang Rusdiarso
Kode Jurnal: jpkimiadd070081
