Table A.3
Carbon-rich cloud formation: Dust growth surface reactions for a carbon-rich environment in addition to those listed in Table 1 in Helling et al. (2008) for TiO2[s], SiO2[s], SiO[s], Fe[s], FeS[s], MgO[s], and Al2O3[s] (32 reactions).
| Index r | Solid s | Surface reaction | Key species |
|
|
|||
| 33 | C[s] | C → C[s] | C |
| 34 | carbon | C2→ 2 C[s] | C2 |
| 35 | C3→ 3 C[s] | C3 | |
| 36 | 2 C2H → 4 C[s] + H2 | C2H | |
| 37 | C2H2→ 2 C[s] + H2 | C2H2 | |
| 38 | CH4→ C[s] + 2 H2 | CH4 | |
| 39 | TiC[s] | Ti + C → TiC[s] | min{Ti, C} |
| 40 | titanium- | 2 Ti + C2→ 2 TiC[s] | min{Ti, C2} |
| 41 | carbide | 3 Ti + C3→ 3 TiC[s] | min{Ti, C3} |
| 42 | 4 Ti + 2 C2H → 4 TiC[s] + H2 | min{Ti, C2H} | |
| 43 | 2 Ti + C2H2→ 2 TiC[s] + H2 | min{Ti, C2H2} | |
| 44 | Ti + CH4→ TiC[s] + 2 H2 | min{Ti, CH4} | |
| 45 | TiC → TiC[s] | TiC | |
| 46 | TiS + C + H2→ TiC[s] + H2S | min{TiS, C} | |
| 47 | 2 TiS + C2 + 2 H2→ 2 TiC[s] + 2 H2S | min{TiS, C2} | |
| 48 | 3 TiS + C3 + 3 H2→ 3 TiC[s] + 3 H2S | min{TiS, C3} | |
| 49 | 4 TiS + 2 C2H + 3 H2→ 4 TiC[s] + 4 H2S | min{TiS, C2H} | |
| 50 | 2 TiS + C2H2 + H2→ 2 TiC[s] + 2 H2S | min{TiS, C2H2} | |
| 51 | TiS + CH4 + H2→ TiC[s] + H2S | min{TiS, CH4} | |
| 52 | TiC2→ TiC[s] + C | TiC2 | |
| 53 | SiC[s] | Si + C → SiC[s] | min{Si, C} |
| 54 | silicon- | 2 Si + C2→ 2 SiC[s] | min{Si, C2} |
| 55 | carbide | 3 Si + C3→ 3 SiC[s] | min{Si, C3} |
| 56 | 4 Si + 2 C2H → 4 SiC[s] + H2 | min{Si, C2H} | |
| 57 | 2 Si + C2H2→ 2 SiC[s] + H2 | min{Si, C2H2} | |
| 58 | Si + CH4→ SiC[s] + 2 H2 | min{Si, CH4} | |
| 59 | SiC → SiC[s] | SiC | |
| 60 | SiS + C + H2→ SiC[s] + H2S | min{SiS, C} | |
| 61 | 2 SiS + C2 + 2 H2→ 2 SiC[s] + 2 H2S | min{SiS, C2} | |
| 62 | 3 SiS + C3 + 3 H2→ 3 SiC[s] + 3 H2S | min{SiS, C3} | |
| 63 | 4 SiS + 2 C2H + 3 H2→ 4 SiC[s] + 4 H2S | min{SiS, C2H} | |
| 64 | 2 SiS + C2H2 + H2→ 2 SiC[s] + 2 H2S | min{SiS, C2H2} | |
| 65 | SiS + CH4 + H2→ SiC[s] + H2S | min{SiS, CH4} | |
| 66 | Si2C → SiC[s] + Si | Si2C | |
| 67 | SiC2→ SiC[s] + C | SiC2 | |
| 68 | SiH4 + C → SiC[s] + 2 H2 | min{SiH4, C} | |
| 69 | 2 SiH4 + C2→ 2 SiC[s] + 4 H2 | min{SiH4, C2} | |
| 70 | 3 SiH4 + C3→ 3 SiC[s] + 6 H2 | min{SiH4, C3} | |
| 71 | 3 SiH4 + 2 C2H → 4 SiC[s] + 9 H2 | min{SiH4, C2H} | |
| 72 | 2 SiH4 + C2H2→ 2 SiC[s] + 5 H2 | min{SiH4, C2H2} | |
| 73 | SiH4 + CH4→ SiC[s] + 4 H2 | min{SiH4, CH4} | |
| 74 | KCl[s] | KCl → KCl[s] | KCl |
| 75 | sylvite | HK + HCl → KCl[s] + H2 | min{KH, HCl} |
| 76 | 2 CKN + 2 H2O + CaCl2→ 2 KCl[s] + 2 C + N2 + Ca(OH)2 + H2 | min{CKN, CaCl2} | |
| 77 | MgS[s] | MgS → MgS[s] | MgS |
| 78 | niningerite | 2 MgH + 2 H2S → 2 MgS[s] + 3 H2 | min{MgH, H2S} |
| 79 | 2 MgOH + 2 H2S → 2 MgS[s] + 2 H2O + H2 | min{MgOH, H2S} | |
| 80 | MgOH + CaS → MgS[s] + CaOH | min{MgOH, CaS} | |
| 81 | 2 MgN + 2 H2S → 2 MgS[s] + 2 H2 + N2 | min{MgN, H2S} | |
| 82 | 2 MgH + 2 CS → 2 MgS[s] + H2 + 2 C | min{MgH, CS} | |
| 83 | 2 MgOH + 2 TiS → 2 MgS[s] + H2 + 2 TiO | min{MgOH, TiS} | |
| 84 | Mg + H2S → MgS[s] + H2 | min{Mg, H2S} | |
Notes. This set of 84 reactions is applied for all carbon-rich models.
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