The core functions of aliphatic hydrocarbons are as energy fuels, industrial solvents, and raw materials for chemical synthesis, playing a fundamental role in multiple production and daily life sectors. Specific functions can be categorized as follows:
1. Energy Fuel Function: This is the most common use of aliphatic hydrocarbons. Methane, gasoline, kerosene, and diesel are all important fuels. Methane is widely used for domestic gas heating, while gasoline and diesel are the main energy sources for transportation, releasing a large amount of heat energy upon combustion.
2. Solvent Function: Low-boiling-point aliphatic hydrocarbons (such as gasoline and kerosene) are commonly used organic solvents in industry. They can be used for industrial cleaning and solvent extraction of organic components. Their insolubility in water allows them to dissolve many hydrophobic organic substances.
3. Chemical Synthesis Raw Material Function: Low-carbon aliphatic hydrocarbons (C1-C5): These are the core basic raw materials for petrochemicals. Ethylene, propylene, etc., can be used through addition and polymerization reactions to produce synthetic plastics and fibers such as polyethylene and polypropylene, forming the source of the synthetic materials industry. Higher aliphatic hydrocarbons (C6 and above): Straight-chain olefins (C18 and below) can be used to produce plasticizers and surfactants; n-alkanes can be oxidized to prepare higher alcohols and fatty acids, which are raw materials for soaps and detergents; C10-C30 n-alkanes can also be used to produce single-cell protein for animal feed through biochemical reactions.
4. Other Sub-applications: Aliphatic hydrocarbons are also involved in pharmaceutical and cosmetic production, and some derivatives can be used as petroleum additives, flame retardants, and other chemical auxiliaries, covering multiple fields such as daily chemicals and biomedicine.