Ionic Equilibria and Ion Exchange of Molybdenum(VI) from Strong Acid Solution

Ion exchange experiments of molybdenum(VI) from strong HCl and H(2)SO(4) solution have been done to investigate the existence of anionic complexes. The concentration of HCl and H(2)SO(4) was changed from I to 9 M. From the data on the complex formation of molybdenum in aqueous solution, a new distribution diagram of Mo(VI) was constructed in the pH range from zero to 10. AG 1 X-8, an anion exchange resin, and Diphonix, a cation exchange resin were used in the loading experiments. Ion exchange results indicate that anionic complexes of Mo(VI) begins to form from 3 M HCl and I M H(2)SO(4) solution and the tendency to form anionic complexes is stronger in HCl than in H(2)SO(4) solution. Our results can be utilized in the analysis of Mo(VI) in strong acid solution and in the design of a process to separate Mo(VI).