Laboratory studies on the reactions between chlorine, sulfur dioxide, and oxygen - Implications for the Venus stratosphere

Details Laboratory studies on the reactions between chlorine, sulfur dioxide, and oxygen - Implications for the Venus stratosphere Laboratory studies on the reactions between chlorine, sulfur dioxide, and oxygen - Implications for the Venus stratosphere

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...63..347d&link_type=abstract

Icarus (ISSN 0019-1035), vol. 63, Sept. 1985, p. 347-353.

Computer Science

5

Atmospheric Chemistry, Photolysis, Planetary Composition, Stratosphere, Venus Atmosphere, Chlorine Compounds, Oxygen, Sulfur Dioxides, Sulfuric Acid, Venus, Laboratory Studies, Reactions, Chemistry, Chlorine, Oxygen, Sulfur Dioxide, Stratosphere, Atmosphere, Spectroscopy, Photometry, Infrared, Wavelengths, Sulfuric Acid, Sulfuryl Chloride, Experiments, Photolysis

Scientific paper

The title reaction was studied by photolyzing mixtures of Cl2 and SO2 with and without O2 present in an atmosphere of N2, using Fourier transform infrared spectrophotometry to monitor reactants and products. In the absence of oxygen, sulfur dioxide is quantitatively converted to sulfuryl chloride. With 10 to 150 Torr O2 present H2SO4 is produced as well as SO2Cl2. When a number of speculative reactions inferred from these experiments are added to a published model for Venus stratospheric chemistry, it emerges that SO2Cl2 is a key reservoir species for chlorine and that the reaction between Cl and SO2 provides an important cycle for destroying O2 and converting SO2 to H2SO4. The modified model could provide a possible solution to the photochemistry of the Venus stratosphere if the mixing ratio of chlorine on Venus were as high as 8 ppm.

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