INTERCALATION OF PEROXOMOLYBDATE-(VI) ANI ON INTO LAYERED DOUBLE HYDROXIDE AND ITS REVERSIBLE TRANSFORMATION TO OXOMOLYBDATE-(VI) ANION

Peroxomolybdate (VI) anion with tartrate as a ligand ([Mo2O2(O-2)(4)(C 4H2O6)](4-), PMA) was intercalated into layers of Mg-Al type layered d ouble hydroxide (LDH) by anion exchange reaction with terephthalate an ion previously intercalated in the layers. The intercalation compounds were characterized by FT-IR, UV, X-ray diffraction and thermal analys is equipped with a mass spectroscope. Both in aqueous solution and in the LDH layers suspended in water, the peroxo groups (-O-O-) in PMA we re released at 80 degrees C to yield oxomolybdate(s) having a tartrate ligand, and the oxomolybdate(s) reverted to PMA by addition of hydrog en peroxide.