Reduction of nitrogen oxides with ammonia over complex vanadium and chromium oxides
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Catalytic properties of γ-Al2O3 -supported complex vanadium and chromium oxides V2−xCr x O5−δ (0 < × s 1.3), amorphous to X-rays, in the reduction of nitrogen oxides with ammonia were studied. Vanadium exists in these catalysts mostly in a pentavalent state and chromium exists as Cr3+ and Cr6+. As the content of chromium in the catalysts increases, the optimal temperature of the process decreases, and the degree of conversion of nitrogen oxides increases.
Key wordscomplex oxides, vanadium, chromium catalytic properties nitrogen oxides, ammonia, reduction
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