Characterization of Calcium-Doped Silica Gel Prepared in an Aqueous Solution

Simple item page
dc.creatorQuang, Dang Viet
dc.creatorPark, Jin Koo
dc.creatorKim, Jong-gil
dc.creatorElineema, Gideon
dc.creatorShao, Godlisten N.
dc.creatorLee, Jae Eun
dc.creatorKim, Hee Taik
dc.date2016-05-16T14:06:29Z
dc.date2016-05-16T14:06:29Z
dc.date2012-02-20
dc.date.accessioned2018-04-18T12:07:59Z
dc.date.available2018-04-18T12:07:59Z
dc.descriptionIn this study, calcium-doped silica was prepared by modifying sodium silicate-based silica gel in an aqueous solution of Ca(OH)2. Silica gels with less than 1 mm in size with different pH values were treated in Ca(OH)2 solution at concentrations ranging from 2 to 20 g/L and aged at 25, 60, and 90°C for 40 min. The BET surface area of the silica gel decreased while its pore size increased considerably after modification in Ca(OH)2 solution. The pH of 5% calcium-doped silica in water ranged from about 8.5 to 10, depending on the pH of silica gel, the aging temperature, and the concentration of the Ca(OH)2. When the concentration of the Ca(OH)2 solution was 20%, needle-like crystals of calcium silicate hydrate formed over the surface of silica gel.
dc.identifierhttp://hdl.handle.net/20.500.11810/2078
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2078
dc.languageen_US
dc.publisherResources Processing
dc.titleCharacterization of Calcium-Doped Silica Gel Prepared in an Aqueous Solution
dc.typeJournal Article, Peer Reviewed

Files

Collections

Department of Chemistry and Life Sciences