ChemInform Abstract: Hydration Kinetics of CaAl2O4 Using Synchrotron Energy-Dispersive Diffraction.

✍ Scribed by S. RASHID; X. TURRILLAS

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 33 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199804015

✦ Synopsis

Hydration Kinetics of CaAl 2 O 4 Using Synchrotron Energy-Dispersive Diffraction. -The hydration process of pastes of CaAl 2 O 4 with a water to solid ratio of 0.4 at temp. ranging from 60 to 90 • C is followed by synchrotron EDD. The hydration rate increases with temp. according to a three-dimensional diffusion-controlled model. A solid state reaction mechanism is proposed that involves the formation of intermediate Ca 2 Al 2 O 5 •8H 2 O and final formation of Ca 3 Al 2 O 6 •6H 2 O. The degree of crystallinity of the intermediate product influences the overall reaction rate.

-(RASHID, S.; TURRILLAS, X.;