Molibdéndiszulfid

Molibdéndiszulfid is an inorganic compound with the chemical formula MoS2. It is a naturally occurring mineral, also known as molybdenite. Molibdéndiszulfid is a layered material, meaning it consists of stacked layers of molybdenum atoms sandwiched between layers of sulfur atoms. These layers are held together by weak van der Waals forces, which allows them to slide easily over one another. This property makes molibdéndiszulfid an excellent solid lubricant.

In its pure form, molibdéndiszulfid is a gray-black solid. It is insoluble in water and most common solvents. The compound exhibits a hexagonal crystal structure. Its high melting point and thermal stability contribute to its utility in demanding applications.

The primary use of molibdéndiszulfid is as an additive in lubricants, greases, and anti-friction coatings. When used as a lubricant, the sliding layers effectively reduce friction between surfaces, preventing wear and heat buildup. This makes it valuable in high-pressure, high-temperature environments where traditional liquid lubricants may fail. It is also employed in various industrial applications, including as a catalyst in petroleum refining and in the production of certain chemicals. Research is ongoing into its potential applications in electronics and advanced materials due to its unique electronic and optical properties.