हाइड्रोजनीकरण क्या है? इसका औद्योगिक अनुप्रयोग क्या है?

Hydrogenation is the process of addition of hydrogen. Unsaturated hydrocarbons are added with hydrogen in the presence of palladium and nickel catalysts to give saturated hydrocarbons.

${}_{_{R}/}^{^{R}\backslash }C=C_{{{\backslash }_{R}}}^{{{/}^{R}}}$$\xrightarrow[Ni\,\,Catalysis]{{{H}_{2}}}$ $\begin{matrix}
   \begin{matrix}
   H\,\,\,\,\,H  \\
   |\,\,\,\,\,\,\,\,\,|  \\
\end{matrix}  \\
   R-C-C-R  \\
   |\,\,\,\,\,\,\,\,\,\,|  \\
   R\,\,\,\,\,\,\,R  \\
\end{matrix}$

This reaction is applied in the hydrogenation of vegetables oils, which contain long chains of unsaturated carbons.