%0 Journal Article
%T SilicasupportedBr£¿nstedacidsascatalystinorganictransformations:Acomprehensivereview
%A Manpreet Kaur
%A Sahil Sharma
%A Preet M. S. Bedi
%J ´ß»¯Ñ§±¨
%P 520-549
%D 2015
%R 10.1016/S1872-2067(14)60299-0
%X £¿Br£¿nstedacidcatalystshavebeenusedinanumberoforganictransformations.Toovercomelimitations,suchastoxicity,volatility,highpriceandhazardousnatureoftheconventionalmethods,thecatalystsareadsorbedonsilicageltogivethebenefitsandadvantagesofreadyavailability,simplework-upprocedure,longcatalyticlife,environment-friendliness,goodtoexcellentyieldsandrecyclability.Theusesofsuchcatalystshavegainedimportanceworldwide.Thisarticledescribessomeoftheimportantsilicatedcatalysts,namely,heteropolyacids,polyphosphoricacid,perchloricacid,fluoroboricacid,andsilicatedsulphuricacid.Thesecatalystshavebeenusedinanumberoforganicreactionstoyieldcompoundsthatareimportantinthechemicalandpharmaceuticalindustries.Wesummarizethebeneficialeffectsofthesecatalystsandthereportsthathavebeenpublishedontheminthepastseveralyears.Inthepresentreview,thedescriptionofthecatalystsareintroducedfollowedbyarecentresearchhistory,andacomparisonbetweenthesilicasupportedcatalystsandother(polymer)supportedcatalysts.Thearticleendsupgivingtheadvantagesofthesecatalyticsystemsovertheconventionalcatalyst.
%K Br£¿nstedacids
%K Silicatedcatalysts
%K Recyclability
%K Chemoselectivity
%K Conventional
%U http://www.chxb.cn/CN/abstract/abstract21565.shtml