Desiccants, also known as hygroscopic agents, are solid materials that adsorb or chemically absorb water vapor. A desiccant is a water-removing agent that absorbs moisture from the atmosphere.
Its drying principle is to physically adsorb water molecules in its own structure or chemically absorb water molecules and change its chemical structure to become another kind. substance.
The desiccant for removing water vapor by adsorption is silica gel, alumina gel, molecular sieve, activated carbon, bone charcoal, charcoal or activated clay.
The water vapor is removed by a chemical absorption method, and a commonly used desiccant is a substance having a large chemical affinity with water vapor such as calcium chloride, quicklime or phosphorus pentoxide.
Water vapour:aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Unlike other forms of water, water vapor is invisible.
Is water vapor and moisture the same thing?
Water is present as a liquid and as a gas in the atmosphere. When water is a gas, it is called water vapor. You can't see water vapor in the air, because water molecules are very small. ... Warm air can hold more water vapor, while cold air cannot hold as much.