Question

Which compound is formed on catalytic hydrogenation of carbon monoxide at high pressure and temperature in presence of ZnO–Cr$_2$O$_3$ catalyst?

• A. CH\(_3\)OH
• B. CH\(_3\)COOH
• C. CH\(_3\)CH\(_2\)OH
• D.

Hint:

ZnO–Cr\(_2\)O\(_3\) is the catalyst in the large-scale synthesis of methanol from CO and H\(_2\).

Answer 1

The Correct Option is A

This is the industrial method for methanol synthesis:
\[ \text{CO} + 2\text{H}_2 \xrightarrow{\text{ZnO–Cr}_2\text{O}_3,\ P,\ T} \text{CH}_3\text{OH} \] This catalytic system is efficient under:
- High pressure (50–100 atm)
- Elevated temperature (around 300°C)
Other compounds like ethanol or acetic acid are not formed under these conditions.