The Metal that is used as a catalyst in hydrogenation of Oils is:

Question

Accepted Answer

The correct option is (1):
Nickel (Ni) is widely used as a catalyst in the hydrogenation of oils, a process that converts unsaturated fats (oils) into saturated fats (margarine, vegetable ghee). This process is known as the Sabatier and Senderens reaction. Hydrogenation involves the addition of hydrogen atoms across the double or triple bonds present in unsaturated fatty acids, making them single bonds and thus saturating the oil. Nickel is particularly effective due to its ability to adsorb hydrogen molecules and the unsaturated oil molecules onto its surface, facilitating the reaction by lowering the activation energy. While nickel generally requires higher temperatures compared to some other catalysts, its cost-effectiveness and efficiency make it a preferred choice in industrial applications for hardening oils.

The incorrect option is (2):
Lead (Pb) is not used as a catalyst in the hydrogenation of oils. Lead is primarily known for its use in alloys and batteries, but it does not possess the catalytic properties required to facilitate the addition of hydrogen to unsaturated bonds in oils. In fact, lead can act as a poison to many catalysts, reducing their activity.

The incorrect option is (3):
Copper (Cu) is generally not used as a catalyst for the hydrogenation of oils. While copper can act as a catalyst in certain organic reactions, it is not as effective or commonly employed as nickel, palladium, or platinum for the specific process of hydrogenating vegetable oils. Its catalytic activity for this reaction is significantly lower compared to nickel.

The incorrect option is (4):
Platinum (Pt) is an excellent catalyst for hydrogenation reactions and can facilitate the hydrogenation of oils even at room temperature, as mentioned in the search results. However, due to its very high cost, platinum is not economically viable for large-scale industrial hydrogenation of oils. It is typically reserved for more specialized and sensitive hydrogenation processes in laboratories or specific industrial applications where cost is a lesser concern.