Palladium on barium sulphate (Pd/BaSO4) is also known as:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. the Rosenmund catalyst.
Palladium on barium sulfate (Pd/BaSO4), commonly known as the Rosenmund catalyst, is a widely used heterogeneous catalyst in organic chemistry. It facilitates the hydrogenation of acyl chlorides to aldehydes, allowing for selective reduction without over-reduction to alcohols. The barium sulfate support helps stabilize the palladium and control its activity, making it less reactive compared to unsupported palladium. This selectivity is crucial in synthetic organic processes, where specific functional groups need to be preserved. The Rosenmund catalyst plays a significant role in pharmaceutical and fine chemical synthesis.