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Table 6
Calculated rate coefficients for reactions between Al and halogen species (see text in Appendix D for further details).
| Reaction | Rate coefficient(a) |
|---|---|
| Fluorine reactions: | |
| Al +HF →AlF + H | k1 = 1.1 × 10−10 exp(−125∕T) + 9.3 × 10−10 exp(−2750∕T) |
| AlOH + HF → AlF + H2O |  |
| AlO + HF → AlF + OH | k3 = 7.1 × 10−10 exp(145∕T) |
| AlF + H →Al +HF | k−1 = 1.5 × 10−10 exp(−13 816∕T) |
| AlF + H2O →AlOH + HF | k−2 = 3.9 × 10−12 exp(−6125∕T) |
| AlF + OH →AlO + HF | k−3 = 4.1 × 10−10 exp(−4105∕T) |
| Chlorine reactions: | |
| Al + HCl → AlCl + H | k4 = 1.4 × 10−10 exp(−890∕T) + 2.0 × 10−9 exp(−4036∕T) |
| AlOH + HCl → AlCl + H2O |  |
| AlO + HCl → AlCl + OH | k6a = 2.0 × 10−10 exp(−793∕T) |
| → AlOH + Cl | k6b = 8.8 × 10−10 exp(−27∕T) |
| AlCl + H →Al + HCl | k−4 = 2.0 × 10−10 exp(−10 670∕T) |
| AlCl + H2O →AlOH + HCl |  |
| AlCl + OH →AlO + HCl | k−6a = 1.7 × 10−10 exp(−1266∕T) |
| → AlOH + Cl | k−6b = 8.0 × 10−10 exp(−18.9∕T) |
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