sulfation

sulfation

also spelled  Sulphation,  

      in chemistry, any of several methods by which esters or salts of sulfuric acid (sulfates) are formed. The esters are commonly prepared by treating an alcohol with sulfuric acid, sulfur trioxide, chlorosulfuric acid, or sulfamic acid. The term sulfation often connotes a deleterious effect; an example is the accretion on statuary of unsightly films resulting from the action of airborne oxides or sulfur on calcium minerals in the stone. Another undesirable process called sulfation is the accumulation of a crystalline form of lead sulfate on the plates of lead–acid storage batteries.

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Universalium. 2010.

Look at other dictionaries:

  • Sulfation — refers to the process whereby a lead acid battery (such as a car battery) loses its ability to hold a charge after it is kept in a discharged state too long due to the crystallization of lead sulfate.Lead acid batteries generate electricity… …   Wikipedia

  • Sulfation — Sulfat Ion in der klassischen Schreibweise wahrscheinlichere Bindungssituation im Sulfat Ion …   Deutsch Wikipedia

  • sulfation — sulfatacija statusas T sritis chemija apibrėžtis Smulkių PbSO₄ kristalų virtimas stambiais švino akumuliatoriuje. atitikmenys: angl. sulfating; sulfation rus. сульфатация …   Chemijos terminų aiškinamasis žodynas

  • sulfation — noun The replacement of a hydrogen atom of an organic compound with a sulfate ( OSOOH) functional group, or the replacement of the hydrogen atoms of two molecules to form a sulfate (R OSOO R) …   Wiktionary

  • sulfation — Addition of sulfate groups as esters to preexisting molecules. * * * sul·fa·tion (sul faґshən) addition of a sulfate group to a molecule …   Medical dictionary

  • Sulfation —   A condition that afflicts unused and discharged batteries; large crystals of lead sulfate grow on the plate, instead of the usual tiny crystals, making the battery extremely difficult to recharge.   Solar Electric Glossary …   Energy terms

  • sulfation — sul·fa·tion …   English syllables

  • sulfation — ˌsəlˈfāshən noun ( s) : the process of sulfating or becoming sulfated * * * sulphāˈtion or (US) sulfāˈtion noun • • • Main Entry: ↑sulphate …   Useful english dictionary

  • Sulfation Factor — Sul|fa|ti|on Fac|tor [sʌl feɪʃn fæktə[r]; engl. = Sulfatierungsfaktor]: svw. ↑ Somatomedin …   Universal-Lexikon

  • sulfation factors — former name for insulin like growth f s …   Medical dictionary

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