Table 1 Conditions of initial rate measurements and results obtained by linear regression of normalized Si mass losses over time determined from UV-visible spectrophotometry solution analyses

From: Impact of B and Al on the initial and residual dissolution rate of alumino-borosilicate glasses. Part I: kinetic data

Glass

Sample

Grain size (µm)

Surface

S/V* (cm-1)

Final pH

r0 (g.m-2.d-1)

R2

B6A4

Monolith

 

GEO

0.03

8.9

2.4 ± 0.6

0.994

Powder

20-40

BET

0.16

9.0

2.6 ± 0.5

0.999

GEO

0.10

4.0 ± 0.7

B11A3

Monolith

 

GEO

0.01

9.0

10.3 ± 2.6

0.999

Powder

20-40

BET

0.03

8.9

12.2 ± 1.9

0.998

GEO

0.02

17.8 ± 3.6

B14A3

Monolith

 

GEO

0.01

8.9

32.6 ± 6.3

0.0996

Powder

20-40

BET

0.03

9.0

31.0 ± 11.2

0.985

GEO

0.02

49.5 ± 17.9

B11A6

Monolith

 

GEO

0.01

9.0

10.0 ± 2.0

0.999

Powder

20-40

BET

0.03

9.0

11.4 ± 2.3

0.998

GEO

0.02

16.5 ± 2.6

B10A2

Monolith

 

GEO

0.01

8.8

5.1 ± 0.6

0.999

Powder

20-40**

BET

0.09

9.1

6.6 ± 1.9

0.963

GEO

0.02

29.6 ± 8.5

B10A1

Monolith

 

GEO

0.01

8.9

15.5 ± 2.6

0.998

Powder

20-40

BET

0.03

9.0

17.6 ± 4.8

0.985

GEO

0.02

30.3 ± 8.3

  1. The pH is measured at 90 °C at the end of the test, and the associated uncertainties are ± 0.1. *The provided S/V corresponds to the initial S/V and is calculated for powders based on the BET surface area or the geometric surface area (GEO), and for monoliths based on the geometric surface area. **The powders used for B10A2 were not washed and contain fines; the geometric surface area does not account for the presence of these grinding fines.
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