Reaction of atomic oxygen with hydrogen sulphide

Abstract

The reaction of atomic oxygen with hydrogen sulphide has been analyzed in terms of the following reaction mechanism. O+H₂S→OH+SH; k₁= 1.37 × 10^–14 cm³ molecule^–1 s^–1(1) O+OH→H+O₂; k₂= 4.3 × 10^–11 cm³ molecule^–1 s^–1(2) H+H₂S→H₂+SH; k₃= 3.20 × 10^–12 cm³ molecule^–1 s^–1(3) SH+O→H+SO; k₄= 5.0 × 10^–10 cm³ molecule^–1 s^–1(4) SH+H→S+H₂; k₅= 1.3 × 10^–10 cm³ molecule^–1 s^–1(5) SO+OH→SO₂+H; k₆= 1.17 × 10^–10 cm³ molecule^–1 s^–1(6) S+O₂→SO+O; k₇= 1.2 × 10^–12 cm³ molecule^–1 s^–1. (7) Numerical integration of the above rate equations yielded reaction profiles for O, H, and SO that accurately reproduced those measured experimentally in a fast discharge flow system using e.s.r. detection. The consistency of the mechanism with known reactions of sulphur-containing species is discussed.