Research Article
Mathematical Modeling and Mechanism of VUV Photodegradation of H2S in the Absence of O2
Table 1
The chemical reaction of direct photolysis of H2S and the corresponding photolysis rate constants.
| | Reaction | Quantum efficiency | Light absorptivity at 185 nm (L/mol·cm) | Light absorptivity at 254 nm (L/mol·cm) | Rate constant (L/mol·s) | Reaction order | References |
| | H2S + hv → H· + SH | 1 | 1004.66 | 1.96 | / | / | [24] | | HS· + hv → H· + S | 1 | 20.5 | 0 | / | / | [24] | | H· + H· → H2 | / | / | / | 2.498E + 10 | 2 | [25] | | H2S + H· → H2 + SH | / | / | / | 4.786E + 08 | 2 | [26] | | H· + SH· → H2 + S | / | / | / | 8.0E + 09 | 2 | [27] | | SH· + SH· → S + H2S | / | / | / | 8.368E + 9 | 2 | [28] |
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