Question

Conversion of $S{O}_2$ to $S{O}_3$ requires $Pt$ or $V_2{O}_5$ as catalyst.

• A. True
• B. False

Answer 1

The correct option is A True

Clean, dry sulfur dioxide is the feedstock for this stage. Electrostatic precipitators are used to remove any ash from the stream.

Relevant Equations: ${SO}_2+\frac{1}{2}{O}_2⟶{SO}_3\Delta H=99kJ/mol$

The sulfur dioxide is mixed with air at pressure slightly higher than atmospheric, and is passed through a catalyst tower, called a converter. The tower contains 3 or 4 layers of vanadium oxide catalyst. Unreacted gases are recycled back into the gas stream.

Hence, true.