oxidereleasing

Oxidereleasing is a descriptive term used to refer to substances and processes that release oxygen or other oxidizing species during a chemical reaction. It is not a single, formal field, but a label applied in chemistry, materials science, and engineering to describe materials that supply oxidizing power or oxygen.

Mechanisms underpinning oxidereleasing include chemical decomposition of oxidizers such as peroxides and chlorates, which liberate molecular oxygen; hydrolysis of compounds like calcium peroxide or sodium percarbonate that releases O2 in water; and catalytic or spontaneous decomposition of hydrogen peroxide to form oxygen gas. In some cases, solid-state reactions such as potassium superoxide (KO2) reacting with carbon dioxide yield oxygen. Electrochemical methods, including water electrolysis, generate oxygen at the anode. Biological processes, notably photosynthesis, also release oxygen as a byproduct.

Common examples of oxidereleasing materials include hydrogen peroxide, calcium peroxide, sodium percarbonate, potassium chlorate, ammonium perchlorate, and potassium superoxide, among others. Applications span life-support systems for submarines and spacecraft, portable chemical oxygen generators, and certain industrial processes that require localized oxygen delivery. Oxidereleasing chemistry is also relevant in wastewater treatment and aquaculture for maintaining dissolved oxygen levels.

Safety considerations are central: oxidizers can be highly reactive, potentially igniting organic materials or fuels. Many oxidereleasing substances are moisture-sensitive or heat-sensitive and require careful storage, compatible containment, and separation from combustibles. Proper handling, sizing, and compatibility testing are essential in both laboratory and industrial settings.