Table 1.
List of experiments with the corresponding temperature, initial concentration ratio, and thickness.
| Experiment | T (K) | NH3:CO2:H2O | Thickness (nm) | τSE (s) |
 (s) |
τAC (S) |
|---|---|---|---|---|---|---|
| 1 | 120 | 15:8:100 | 348 | 5.7×104 | 1.1×105 | 7.0×104 |
| 2 | 120 | 16:8:100 | 160 | 2.2×104 | 1.9×104 | 1.9×104 |
| 3 | 125 | 8:5:100 | 258 | 1.7×104 | 1.7×104 | 3.8×104 |
| 4 | 130 | 31:4:100 | 338 | 1.9×104 | 2.3×104 | – |
| 5 | 130 | 21:8:100 | 296 | 2.1×104 | 1.9×104 | 3.4×104 |
| 6 | 130 | 16:9:100 | 218 | 1.9×104 | 2.1×104 | 7.4×104 |
| 7 | 130 | 5:2:100 | 228 | 3.2×104 | 1.5×104 | 4.8×104 |
| 8 | 135 | 15:8:100 | 269 | 1.3×104 | 1.5×104 | 1.1×104 |
| 9 | 135 | 7:6:100 | 217 | 2.2×103 | 3.0×103 | 2.5×104 |
| 10 | 140 | 21:8:100 | 332 | 1.4×104 | 5.7×103 | 1.2×104 |
| 11 | 140 | 17:6:100 | 307 | 2.0×104 | 4.5×103 | 1.6×104 |
| 12 | 140 | 15:5:100 | 191 | 5.2×104 | 2.9×103 | 2.9×104 |
| 13 | 140 | 6:9:100 | 181 | 3.4×103 | 1.7×103 | 1.1×103 |
Notes. The structural evolution (SE) timescale as well as the reaction timescales for the CO2 reactant and ammonium carbamate (AC) product are also given. We estimate a 20% uncertainty on the concentration ratio and thicknesses, a 30% uncertainty on the SE and CO2 timescales, and up to 100% uncertainty on the AC timescale.
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