Magnesite dissolution kinetics

Higgins S.R., Boram L.H., Eggleston C.M., Coles B.A., Compton R.G., and Knauss K.G. (2002a) Dissolution kinetics, step and surface morphology of magnesite (104) surfaces in acidic aqueous solution at 60°C by atomic force microscopy under defined hydro-dynamic conditions. /. Phys. Chem. B 106, 6696-6705. 

Higgins S.R., Jordan G., and Eggleston C.M. (2002b) Dissolution kinetics of magnesite in acidic aqueous solution a hydrothermal atomic force microscopy study assessing step kinetics and dissolution flux. Geochim. Cosmochim. Acta 66, 3201-3210. 

Recently, Chou et al. (1989) studied the dissolution kinetics of various carbonate minerals in aqueous solution. Figure 2.10 illustrates the experimental results for aragonite, calcite, witherite, dolomite, and magnesite. These data can be fit by rate equations, an example of which is shown in equation 2.28 for calcite. 

Pokrovsky O. S. and Schott J. (1999) EYocesses at the magnesium-bearing carbonates/solution interface II. Kinetics and mechanism of magnesite dissolution. Geochim. Cosmochim. Acta 63, 881—897. 

The rates of dissolution of various carbonates were studied in [200], The kinetics of magnesite dissolution was studied in [201] and that of dolomite dissolution in [202,203],... 

Dissolution kinetics of single carbonates such as calcite, aragonite, and magnesite exhibit simple dependence with respect to a limited number of reactants, specifically, H +, H2C03, and H20. It is thus easy to identify the elementary steps leading to the formation of the surface activated complex and the nature of the products of the detachment process following the decomposition of the activated complex. 

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