Abstract: In the present work, cobalt-doped vanadyl phosphate
is synthesized and use to prepare orthorhombic sulfur by reaction
with hydrogen sulfide. The obtained X-ray florescence results
for the cobalt doped matrix are as follows: 93.36 % V2O5;
6.56% P2O5 and 0,08% Co2O3. The maximum H2S adsorption
capacity was measure as 44.3 mg of H2S per gram of matrix.
The interlayer distance (as measured by X-ray diffraction data)
in the cobalt-doped matrix is 0.52 nm. It is verified by SEM
images that orthorhombic sulfur crystals are formed.