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Source:Transform the World with Simplicity
The nature and use
of light aromatics in the field of chemical production raw materials
Abstract
This paper introduces in detail the nature and use of light aromatics in the field of chemical production raw materials. Light aromatics are an important class of organic compounds, including benzene, toluene, xylene, etc., with a wide range of industrial applications. In this paper, the physical properties, chemical properties, production methods and uses of light aromatic hydrocarbons are described in order to provide help for the in-depth understanding and rational application of light aromatic hydrocarbons.
1. Introduction
Light aromatic hydrocarbons are a class of hydrocarbons containing benzene rings in their molecular structures, mainly including benzene, toluene, xylene, etc. These compounds are widely used in chemical, petroleum, pharmaceutical, pesticide and other fields, so it is of great significance to study their properties and uses.
2. the physical properties of light aromatic hydrocarbons
light aromatic hydrocarbons are usually colorless and transparent liquids with special odors. They have low boiling point, strong volatility, insoluble in water, but can be miscible with many organic solvents. In addition, light aromatics are less dense than water, flammable, explosive and toxic.
3. the chemical properties of light aromatic hydrocarbons
light aromatic hydrocarbons have typical aromaticity and can undergo a variety of chemical reactions such as substitution reactions, addition reactions, and oxidation reactions. The hydrogen atoms on the benzene ring may be substituted with other atoms or groups to generate various derivatives. In addition, the light aromatic hydrocarbon may also undergo an addition reaction with an alkene, an alkyne, or the like to form a compound such as a cycloalkane.
4. the production method of light aromatics
the chemical process of light aromatics mainly from petroleum and coal. The methods of extracting light aromatics from petroleum include catalytic reforming, cracking, alkylation, etc. The methods of extracting light aromatics from coal mainly include coking, gasification, liquefaction, etc. In addition, light aromatics can also be produced by synthetic methods, such as benzene can be produced by toluene dealkylation and the like.
to 5. the use of light aromatics
1. chemical raw materials: light aromatics is the raw material of many important chemical products, such as benzene can be used to produce cyclohexane, phenol, aniline, etc.; toluene can be used to produce benzoic acid, benzyl alcohol, etc.; xylene can be used to produce terephthalic acid, isophthalic acid, etc.
2. solvent: light aromatic hydrocarbon is a good organic solvent, can be used for paint, coating, ink and other diluents and solvents.
3. Fuel: Light aromatics can be used as fuel for combustion to generate energy, such as diesel oil and fuel oil.
6. conclusion
light aromatics have important properties and wide applications in the field of chemical production raw materials. Understanding and mastering the properties and uses of light aromatic hydrocarbons is of great significance for rational utilization of resources, improvement of production efficiency and environmental protection. In the future, with the continuous progress of science and technology and the continuous improvement of environmental protection requirements, the production and application of light aromatics will face new challenges and opportunities.