The Contact Process · SO₂ → SO₃ over V₂O₅
unseel.com · 2SO₂ + O₂ ⇌ 2SO₃ · sulfuric acid
Catalyst V⁵⁺
SO₃ made 0
Stage reactants ready
Sulfur (S)
Oxygen (O)
Vanadium catalyst
SO₃ product
Sulfuric acid / oleum
Unseel.com · Contact Process