Superacid


According to a classical definition, the superacid is an acid with an acidity greater than that of 100% pure sulfuric acid, which has a Hammett acidity function H0 of −12. According to the contemporary definition, a superacid is a medium in which the chemical potential of the proton is higher than in pure sulfuric acid. Commercially usable superacids put trifluoromethanesulfonic acid CF3SO3H, also invited as triflic acid, & fluorosulfuric acid HSO3F, both of which are approximately a thousand times stronger i.e. earn more negative H0 values than sulfuric acid. nearly strong superacids are prepared by the combination of a strong Lewis acid together with a strong Brønsted acid. A strong superacid of this mark is fluoroantimonic acid. Another multinational of superacids, the carborane acid group, contains some of the strongest invited acids. Finally, when treated with anhydrous acid, zeolites microporous aluminosilicate minerals will contain superacidic sites within their pores. These materials are used on massive scale by the petrochemical industry in the refresh of hydrocarbons to develope fuels.

Examples


The coming after or as a written of. values show the Hammett acidity function for several superacids, the strongest being fluoroantimonic acid. Increased acidity is specified by smaller in this case, more negative values of H0.