Need reaction to recover Sulphur from Sulphur Dioxide

[nuclear1]

What reaction or series of reactions can I react SO2 gas with that will strip off the O2 and leave me with elemental S?
It seems most reactions will just make a sulphates etc.

[DrStupid]

What reaction or series of reactions can I react SO2 gas with that will strip off the O2 and leave me with elemental S?

How about this: http://ase.tufts.edu/nano-cel/publications/redoxChemOverCeO2.pdf
or this: http://www.worleyparsons.com/CSG/Hydrocarbons/SpecialtyCapabilities/Documents/Production_of_Elemental_Sulphur_from_SO2.pdf