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Table 2 Reported and calculated activation energies

From: Effect of temperature and illumination on pyrite oxidation between pH 2 and 6

pH range

T-range/°C

Progress variable

Dark/light

Ea/kJ mol-1

Referencea

2–4

20–40

R Fe

Dark

56.9 +/- 7.5

MBb

6.7h;8.5

3–25

Dark

88

N

11.4

50–80

Py loss

Dark

55.6

CO-A1

10–12.5

50–84

Py loss

Dark

60.9

CO-A2

5.4–6.4

25–37

Ro2

Dark

62.7+/-12.2

KObc

5.4–6.4

25–37

Ro2

Dark

66.1+/-5.9

KObd

3

20–47

R H

Dark

54.4

This study

4

20–47

R H

Dark

100.3

This study

5

20–47

R H

Dark

64.6

This study

6

20–47

R H

Dark

72.0

This study

3

20–47

R H

Light

85.3

This study

4

20–47

R H

Light

121.1

This study

5

20–47

R H

Light

48.9

This study

6

20–47

R H

Light

55.2

This study

2.3

20–47

Dark

50.7

This study

3

20–47

Dark

48.3

This study

4

20–47

Dark

70.8

This study

5

20–47

Dark

34

This study

6

20–47

Dark

45

This study

3

20–47

Light

64.2

This study

4

20–47

Light

74.5

This study

5

20–47

Light

89

This study

6

20–47

Light

64

This study

2.3

20–47

R Fe

Dark

46.2

This study

3

20–47

R Fe

Dark

56.3

This study

3

20–47

R Fe

Light

55.8

This study

  1. aSources: MB = ref. 16; N = ref. 10; CO-A = ref. 52, 53; KO = ref. 54. bEa based on two rates measured at two temperatures. cActivation energy for stage III of their experiments when initial transient effects have dissipated. dActivation energy for stage IV of their experiments.