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The existing form of molybdenum in acidic sulfate solution was studied by means of ion exchange,infrared(IR) spectra and X-ray photoelectron spectroscopy(XPS).The results indicate that the anionic molybdenum species are predominant in acidic sulfate solution,and Mo(VI) can combine with sulfate radical to form heteropoly acid anions[Mo_2O_5(SO_4)_2]~(2-) and[MoO_2(HSO_4)_4]~(2-).With the decrease in solution pH from 1.92 to 0.06,the existing form of Mo(VI) changes from Mo_7O_(21)(OH)_3~(3-) to[Mo_2O_5(SO_4)_2]~(2-) and then becomes[MoO_2(HSO_4)_4]~(2-),which results in the decrease in the resin adsorption capacity for molybdenum.
The existing form of molybdenum in acidic sulfate solution was studied by means of ion exchange, infrared (IR) spectra and X-ray photoelectron spectroscopy (XPS). The results indicate that the anionic molybdenum species are predominant in acidic sulfate solution, and Mo ( VI) can combine with sulfate radical to form heteropoly acid anions [Mo_2O_5 (SO_4) _2] ~ (2-) and [MoO_2 (HSO_4) _4] ~ (2 -) with the decrease in solution pH from 1.92 to 0.06, the Existing forms of Mo (VI) changes from Mo_7O_ (21) (OH) _3 ~ (3-) to [Mo_2O_5 (SO_4) _2] ~ (2-) and then becomes [MoO_2 (HSO_4) , which results in the decrease in the resin adsorption capacity for molybdenum.