Ethene can be prepared from ethanol by one step. You can use dehydrators such as concentrated sulfuric acid for preparation of ethene by ethanol. This is the reaction of preparing an alkene from alcohol compound.
Ethene is an alkene compound and ethanol is an alcohol. Both ethene and ethanol has two carbon atoms in their carbon chain. When ethene is prepared from ethanol, a water molecule should be removed.
Following dehydrators can be used to prepare alkenes from alcohols. Sometimes we need to heat the mixture to occur the reaction.
Ethanol is a liquid in room temperture. But ethene is a gas. Therfore you can see a phase change, liquid to gas.
As ethanol to ethene, other alcohols also can be converted to alkene compounds by using above dehydrators.
So, we have to convert ethanol to different organic compounds and has to try other reagents to do this. There are several methods to that. But those methods will take two steps or more to sucess.
Ethyne reacts with H2 in the presence of quionline to control hydrogenation to give ethene.
Alkyl halides are treated with alcoholic strong bases such as KOH, NaOH to give alkenes. Therefore, heating bromoethane or chloroethane with alcoholic KOH will give ethene.Ethene and other alkenes preparations