Open Access
Table A.1
Grain-surface reactions included in UCLCHEM for HOCO and CO2.
| Reaction | Energy barrier (K) | ||
|---|---|---|---|
| CO + O → | CO2 | 2500 | |
| CO + OH → | HOCO | (50%) | 150 |
| H + CO2 | (50%) | 150 | |
| N + HOCO → | NH + CO2 | (50%) | 0 |
| OH + OCN | (50%) | 0 | |
| O + HOCO → | OH + CO2 | 0 | |
| H + HOCO → | H2 + CO2 | (70%) | 0 |
| CO + H2O | (20%) | 0 | |
| HCOOH | (10%) | 0 | |
Notes. The third reaction, forming H and CO2, was already present in the default chemical network of UCLCHEM, but we updated the energy barrier from 1000 K to 150 K (Ruaud et al. 2015).
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