| 摘要 |
1353870 Removing metal cations from nitrile solutions E I DU PONT DE NEMOURS & CO 25 May 1972 [26 May 1971] 24620/72 Heading C2C Metal cations are removed from liquid organic nitrile solutions by contacting a solution of a metal salt in a nitrile or mixture of nitriles with anhydrous ammonia and separating the insoluble ammonia-metal salt complex formed. Suitable cations are Zn, Cd, Be, Al, Ga, In, Ag, Ti, Zr, Hf, Ge, Sn, V, Nb, Sc, Cr, Mo, W, Mn, Re, Pd, Th, Er, Fe, Y, Co and Ni forming salts with such anions as the halides, anions of C 2 -C 7 fatty acids, HPO<SP>2</SP> 3 -, H 2 PO 2 -, CF 3 COO<SP>-</SP>, OSO 2 C 7 F 15 - and SO 4 <SP>2-</SP>. Exemplified nitriles are adiponitrile, 2-methylglutaronitrile, ethyl succino-nitrile, pentenenitriles, 2-methyl-butene nitrile, acetonitrile and benzonitrile. |
