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[Chemical Knowledge]：Properties and Uses of Coal-to-Olefins

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Coal-to-olefin is a chemical technology that uses coal as raw material to produce olefins. Olefin is a kind of important organic chemical raw materials, widely used in the production of plastics, synthetic rubber, synthetic fiber and other fields. The emergence of coal-to-olefin technology makes the production of olefins no longer dependent on petroleum resources, which is of great significance to ensure national energy security.

The properties of coal-to-olefins mainly include the following aspects:

1. Thermal stability: Coal-to-olefins have high thermal stability, can be processed and used at high temperatures, and are not easy to decompose and deteriorate.

2. Chemical reactivity: The carbon-carbon double bond in the olefin molecule has strong chemical reactivity, and can react with many compounds, such as addition, oxidation, polymerization, etc., to generate a variety of useful compounds.

3. physical properties: coal olefins are mostly colorless, transparent liquid or gas, with high volatility and flammability.

coal olefins are widely used, mainly used in the following aspects:

1. Production of plastics: Olefin is an important raw material for plastics, and various plastics can be generated through polymerization, such as polyethylene, polypropylene, etc. These plastics have excellent corrosion resistance, insulation and processing properties, and are widely used in packaging, construction, home appliances, automobiles and other fields.

2. production of synthetic rubber: coal olefin can be used as a raw material for synthetic rubber, through the polymerization reaction to generate a variety of rubber, such as butadiene rubber, styrene butadiene rubber. These rubbers have excellent elasticity, wear resistance and anti-aging properties, and are widely used in tires, rubber hoses, tapes and other fields.

3. Production of synthetic fibers: coal olefins can be used as raw materials for synthetic fibers, through the polymerization reaction to generate a variety of fibers, such as polyester, nylon and so on. These fibers have excellent strength, elasticity and wear resistance, and are widely used in textiles, clothing and other fields.

In conclusion, as an important chemical technology, coal-to-olefins has a wide range of applications in the field of raw materials for chemical production. With the continuous progress and development of technology, coal-to-olefins will be applied in more fields and bring more contributions to human production and life.

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