http://link.springer.com/article/10.1134%2FS0020168508030059

This link may give some idea

• no it doesn't answer my question, but thanks anyway.

Molybdenum metal or dissolved molybdenum? If you mean dissolved molybdenum It will depend on pH and concentration, but generally at pH's greater than 7 molybdenum will be MoO4(2-) irrespective of H2O2 addition. At low pH molybdenum speciation is more complex so I'm not sure what species you will have.

Depending on concentration, hydrogen peroxide will oxidize metallic molybdenum and under certain conditions may form superoxides with dissolved molybdenum salts.

These two articles might be useful:

http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCGMCS_2011_v32n10_3687

http://pubs.acs.org/doi/pdf/10.1021/cr00027a002

What molybdenum product do you have initially? Metallic molybdenum reacts with  H2O2, this reaction isi exothermic. Once all O2 is consumed to form a mixture of peroxo molybdates, you'll get a yellow-brown solution. The pH is around 3.  There is no way to leave it few days for incubation. 

It is most likely permolybdate.  It is added to red or whte wine to oxidise the sulphite preservatives ad therefore reduce thir toxic affect on some peple.

Mo7O24 6- + H2O2 ⇌ Mo7O23(O2) 6- + H2O

peroxoheptamolybdate is yellow in acidic media and red in alkaline solution.

The catalytic properties of peroxomolybdates originate from the enhanced electrophilic character of the peroxo oxygens that arises when peroxide coordinates to the metal center.

Thus, peroxomolybdates can be considered as electrophilic oxidants and are proposed to react through a transfer of peroxide oxygens to the substrate.

S. L. Regen and G. M. Whitesides, J. Organometal. Chem. 1973, 59, 293.

S. Campestrini, V. Conte, F. Di Furia and G. Modena, J. Org. Chem., 1988, 53, 5721