A new precipitation pathway for calcium sulfate dihydrate (gypsum) via amorphous and hemihydrate intermediates

A new precipitation pathway for calcium sulfate dihydrate (gypsum) via amorphous and hemihydrate intermediates

This work investigates the early stages of precipitation of calcium sulfate from aqueous solution at room temperature and shows for the first time that amorphous calcium sulfate (ACS) and calcium sulfate hemihydrate are sequentially precipitated prior to calcium sulfate dihydrate (gypsum).

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2012-01, Vol.48 (4), p.504-506
Hauptverfasser: Wang, Yun-Wei, Kim, Yi-Yeoun, Christenson, Hugo K, Meldrum, Fiona C
Format: Artikel
Sprache:eng
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Zusammenfassung:This work investigates the early stages of precipitation of calcium sulfate from aqueous solution at room temperature and shows for the first time that amorphous calcium sulfate (ACS) and calcium sulfate hemihydrate are sequentially precipitated prior to calcium sulfate dihydrate (gypsum).
ISSN:1359-7345
1364-548X
DOI:10.1039/c1cc14210k