Aromatics are circular hydrocarbon compounds that contain rings with six carbon atoms, and are found in large amounts in coal . In organic chemistry, organic compounds that contain only two elements, hydrogen and carbon, are called hydrocarbons. Hydrocarbons are also divided into two main groups: aliphatic and aromatic.
Aromatics are compounds that contain at least one benzene ring. The benzene ring is very stable and does not crack to smaller components. Aromatics are not a preferred feedstock because few of the molecules will crack. The cracking of aromatics mainly involves breaking off the side chains resulting in excess fuel gas yield.
Aromatics do not show a tendency to perform incremental reactions, but participate in successive reactions, which is one of their hallmarks. The most common way to produce aromatic compounds is to use catalytic reforming, but there are various other sources for their production, including: steam cracking of hydrocarbons, hydrolysis of alkylation, and so on.
The word aromatic, meaning fragrant, was used before the process of its formation was known. The reason for its use was the sweet smell of many of these compounds, so because of their pleasant smell, their compounds, especially benzene. Toluene and xylene are used as the main feed for the production of many intermediates in the petrochemical industry.
Aromatics are very important in industry and in everyday life. Aromatic structures are used in the health, agricultural, food, pharmaceutical, and many other industries.
The source of this article is the Persian section of the site, which you can read if you are fluent in Persian: آروماتیک ها