How to get ethylene?

Leonid Veselov
Leonid Veselov
August 14, 2012
How to get ethylene?

Ethylene is a gas. It dissolves in water - 25,6 ml in 100 ml. And in ethane - 359 ml in 100 ml. Therefore, it can be quite easily obtained from ethane (ethyl alcohol) by dehydration. Dehydrogenation is the removal of hydrogen from a molecule of an organic compound. In this case, from the ethane molecule (C2H5OH).

Two ways to get ethylene

  1. from ethane thermally, in the presence of Al2ABOUT3. But in this way get ethylene in the industry.
  2. from ethane under the action of sulfuric acid (H2SO4), the so-called dehydrating agent (water-binding agent).

We will consider the second method.

How to get ethylene from ethane

The preparation takes place as a result of a simple chemical reaction:

C2H5OH -> CH2= CH2+ H2O (in the presence of concentrated H2SO4).

This method is available in the home. You need to put some amount of alcohol in the container, add gently H2SO4.Since ethylene is slightly lighter than air, it must be collected in an open, upturned vessel, securing it vertically. It will accumulate gas as a result of the reaction.

Extreme caution should be exercised during the reaction, as the acid can burn the eyes or get on the skin.

When the reaction is over, without turning over the top container, close it. All. You got the gas.