Get to Know About Ethylene Oxide Production Reaction

Ethylene oxide production reaction is the ethylene oxide synthesis reaction. This is the process that produces ethylene oxide, which is an important building block for various plastics and resins. Ethylene oxide is also a key ingredient in refrigerants, medical oxygen delivery devices and humidifier systems. Ethylene oxides can be produced by either the indirect or direct catalytic addition of hydrogen gas to propane, butane or pentane.

1.Hydration of propan-1-ol

This reaction is accomplished by treating propan-1-ol with hydrogen peroxide. This results in propylene glycol and water, which are easily separated from each other.

2.Oxidation of propylene

The resulting propylene oxide can be oxidized by means of an oxidant such as cumene hydroperoxide, benzoyl peroxide or hydrogen peroxide. This converts the compound into ethylene oxide:

3.Byproduct removal

The resulting ethylene oxide must then be distilled to remove impurities and decomposition products (ethylene glycol). It is also important that reactions be carried out at low temperature (40-60℃) to minimize unwanted side reactions. This a very important step in Ethylene oxide production reaction.

4. Use of ketene bromide or sodium bromate

In this method, which is the most common method of ethylene oxide synthesis, propylene oxide is reacted with an inorganic base to form a salt. The salt can then be reduced using a reducing agent. This another step of Ethylene oxide production reaction. If ketene bromide is used as the base, then the salt formed is sodium ethylate. In this case, sodium ethylate is used to reduce ethylene oxide. Alternatively, if sodium bromate is used as the base, then the reaction takes place by means of an inorganic salt. The result of this reaction is shown below:

Uses of ethylene

1.Cleaning of synthetic fiberglass.

This is done by treating the object with a mixture of ethylene and oxygen. The oxygen supports combustion of the ethylene, which helps to burn off surface dirt and dust.

2.Production of polyethylene, polymers and resins.

Ethylene oxide is an important chemical used in the production of various plastics and resins for use in many different industries including construction, electronics, aerospace and medicine. One application for ethylene oxide is to produce modified polyethylene (PE). PE is modified by adding vinyl groups and/or chlorine to the molecule so that it can be used in the production of medical tubing, rubber and other products. Also, ethylene oxide is used in the production of polymers such as polyurethane.

3.Leather processing materials.

Ethylene oxide is also used to create leather processing materials such as tannic acid and triacetate (or "tri") resins. The reactions involve treating ethylene oxide with various chemicals such as calcium hydroxide, sodium phenate or Phthaloyl chloride derivatives.

4.Production of sterilization and insect control products.

Ethylene oxide is used for the production of sterilization and insect control products such as ethylene oxide gas, which is used in hospitals to disinfect rooms, equipment and surgical instruments by exposing them to the gas. Ethylene oxide is also used in the production of plastic strips that are placed on doors to kill pests such as ants, roaches and silverfish. It can also be used in a formulation applied to fabric, vinyl or paper that kills pests or prevents infestation by certain insects such as mites.

5.Preparation of carbon-carbon bonds.

Ethylene oxide is prepared as a precursor to olefin metathesis reactions, in which carbon-carbon double bonds are formed. These reactions occur in the production of polyethylene, polypropylene and other similar plastics and resins. The reactions involve the reaction of ethylene oxide with an olefin, an unsaturated monomer that contains at least two centers of unsaturation (a double bond). This reaction is shown below:

6.Production of the refrigerant R-11.

Ethylene oxide is used to produce the refrigerant R-11, a gaseous compound that has become an important product in the production of many household appliances such as refrigerators and freezers due to its high heat capacity and low boiling point. The following reaction cycle occurs in the production of R-11:

7.Production of dyes, lacquers and other coatings.

Ethylene oxide is removed from ethylene glycol to create ethoxylated alcohols (EOs). These compounds are used primarily to create dyes, resins and other coatings such as varnish and urethane/urea lacquers. Ethoxylated alcohols consist of three molecules of ethylene oxide bound in each molecule. The compound can be created by means of the following reaction:

8.Production of pesticides and insecticides

These products are used in agriculture and industry for the control of pests such as insects, mites and weeds. Products such as malathion, methyl parathion and other derivatives are used to kill insects.

9.Production of disinfectants, fungicides and herbicides

These products are used in water treatment, personal hygiene and industry for the control of microorganisms such as bacteria, viruses and fungi. Ethylene oxide is a key ingredient in the production of denatured alcohols (DEAs), which are used to eliminate microbes from water supplies.

Inconclusions, Ethylene oxide is used in many different industries and because of its wide array of uses, it has a large number of applications. Its main drawback however is its volatility, which can be dangerous to workers in the production process as well as the environment. There are other reactions which cannot eliminate this drawback and one such reaction is hydrogenation catalyzed by an alkaline catalyst. The catalyst used to catalyze the reaction is an alkaline catalyst consisting of potassium hydroxide (KOH) with an excess ligand that forms upon competition for the hydrogen gas between ethylene oxide (EO) and air.