The Periodic Table
The Transition Metals - Hydrogenation of Vegetable Oils.
What is the Hydrogenation of Vegetable Oils?
nickel is used in the
vegetable oils to make margarines and soft-spreads.
Hydrogenation means adding hydrogen to a substance.
oils that are unsaturated will react with hydrogen
at about 60 °C in the presence of a nickel catalyst.
This is an example of an addition reaction where hydrogen
adds across the double bond leaving only single bonds.
The picture below shows hydrogenation of a double bond.
raises the melting point above
and makes the liquid oil become solid in a process called hardening.
The solid product is used as a margarine or spread.
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