Purification of Turkish sepiolite through hydrochloric acid treatment

Ethylene Adsorption on Acid-Treated Clay Minerals

“…The intensities of both the calcite and dolomite peaks decreased after acid treatment. Similar results have been reported by other workers (Inukai et al 1994;Vukovic et al 2006;Korichi et al 2009).…”

“…During acid treatment, cations are leached from the octahedral and tetrahedral sheets, impurities such as calcite and dolomite are dissolved and exchangeable cations are replaced by hydrogen ions. All these changes give rise to an increase in the specific surface area of the clays (Christidis et al 1997;Lazarevic et al 2007;Panda et al 2010). There are many reports regarding the structural and textural properties of clays after acid treatment (Christidis et al 1997;Volzone and Ortiga 2006;Önal et al 2002;Grim 1962;Srasra et al 1989;Myriam et al 1998;Balcı 1999).…”

Microwave assisted acid treatment of sepiolite: The role of composition and “crystallinity”

“…However, the crystal lattice of sepiolite is not entirely disrupted despite the acid treatment. The correlation between the quantity of Mg 2+ ions released from sepiolite and its properties, mainly an increase of the surface area (Aznar et al, 1996;Inukai et al, 1994) and the ability for adsorption on acid-activated sepiolite, have been reported in several studies (Kara et al, 2003;Sabah et al, 2002;Vico, 2003).…”

A New Approach to Compositional Limits for Sepiolite and Palygorskite

“…Samples of sepiolite were prepared by cutting a fragment and coating it with Au. Palygorskite samples were first treated using the dodecylanunonium treatment (Abudelgawad et al, Mid-Atlantic Ridge (Hathaway and Sachs, 1965) Goles, South Serbia (Maksimovic and Radukic, 1961) Little Cottonwood, Utah, USA (Nagy and Bradley, 1955) Kuzuu District, Japan (Imai et al, 1969) Madriat, Sistriere (Caill~re, 1934a) Ampandrandava, Madagascar (Caill~re, 1936) Vasko (Caillbre, 1951) Eski~ehir, Turkey (Cetisli and Gedikbey, 1990) Amboseli, Kenya (Hay and Stoessell, 1984) Tintinara, South Australia (Rogers et al, 1956) Vallecas, Spain (Galfin and Castillo, 1984) Yunclillos, Toledo, Spain (Gal~in and Castillo, 1984) Ballarat, Inyo County, California (Post and Janke, 1984) Itukaichi, Tokyo, Japan (Nagata and Sakae, 1975) Toledo, Spain (L6pez Gonzfilez et al, 1981) Nye County, Nevada (Giiven and Carney, 1979) Vallecas, Spain (Fukushima and Okamoto, 1987) Vallecas, Spain (Gal~in, 1987) Vallecas, Spain (Vicente Rodrfguez et al, 1994) Ninetyeast Ridge, Indian Ocean (Argast, 1989) U.S.S.R. (Teodorovitch, 1961) Ankara, Turkey (Inukai et al, 1994) Southwest Konya, Anatolia, Turkey (Yeniyol, 1986) Vallecas, Spain (Komarneni et al, 1986) Ash Meadows, Nevada (Komarneni et al, 1986) Valdemoro, Spain (He et al, 1996) Vicalvaro, Madrid, Spain (Robertson and Stot, 1974) Amboseli, Kenya (Stoessell and Hay, 1978) Yavapai Country, Arizona, USA (Kauffman, 1943) Karasawa Mine, Japan (Takahashi, 1966) Mullion, Cornwall, England (Midgley, 1964) Yagca formation, Turkey (Yal~in and Bozkaya, 1995) Eski~ehir, Turkey (Yalqin nad Bozkaya, 1995) (2) from …”