I1. Phase boundary processes as rate determining steps in reactions between solids and liquids

Kinetic inhibition of calcite (104) dissolution by aqueous manganese(II)

“…Our results are analogous to those of Terjesen et al [18], who found that cation adsorption had an increasingly stronger influence on inhibition over time, with little to no influence at the onset of an experiment. They concluded that adsorbed impurity cations increase surface carbonate ion concentration thus increasing the rate of the reverse reaction and causing the formation of a protective adsorption layer [18]. The protective surface layer concept also supports our observations of a cessation in new etch pit nucleation at 46 h total reaction time for DIC-buffered runs 1d-1e (Table 1).…”

“…This argument is supported by the work of Sternbeck [45], who concluded that dehydration of MnCO 0 3 on {MnHCO 0 3 and {MnCO 3 À sites was the rate determining process for rhodochrosite growth. Similarly, Terjesen et al [18] demonstrated that adsorption of Cu(II) to calcite decreased with decreasing solution pH, indicating that Cu(II) adsorbed mainly as CuHCO 3 + or CuCO 3 0 . Alternatively, if successive stepwise reactions such as (4)-(6) are indeed important, especially at pH$8.8, the surface would require an induction period of some time before adsorption imposed a significant influence on the dissolution process.…”

“…[4,6,[18][19][20]) has received much less attention compared to that directed at their influence on growth (e.g., Refs. [2,3,5,8,[15][16][17][21][22][23]).…”

In situ AFM study of the interaction between calcite {101¯4} surfaces and supersaturated Mn2+–CO32− aqueous solutions

“…Our observations are in agreement with the results obtained by different authors on the influence of metal cations on the kinetics of calcite dissolution. Macroscopic studies [29,30] have shown that the calcite dissolution rate is highly dependent on the concentration of cationic impurities, with the metal divalent cations smaller than Ca 2 +, i.e. those which form carbonates with calcite-type structure, being the most efficient as inhibitors of calcite dissolution.…”

Incorporation of trivalent actinides into calcite: A time resolved laser fluorescence spectroscopy (TRLFS) study

“…The growth rate of the samples varied with metal ion concentration (Terjesen et al, 1961) from 0.75 to 1.35 lmol m À2 min À1 .…”