Tyagi, BeenaChudasama, Chintan D.Jasra, Raksh V.2012-01-232012-01-232006Applied Clay Science 31 (2006) 16– 28http://hdl.handle.net/1968424/576enSurface acidity; Montmorillonite; DRIFT spectroscopyCharacterization of surface acidity of an acid montmorillonite activated with hydrothermal, ultrasonic and microwave techniquesArticle