Gas phase synthesis of organophosphorus compounds and the atmosphere of the giant planets

Details Gas phase synthesis of organophosphorus compounds and the atmosphere of the giant planets Gas phase synthesis of organophosphorus compounds and the atmosphere of the giant planets

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...67..305b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 67, Aug. 1986, p. 305-324. Research supported by the Institut National des Sciences de l'Univers.

Computer Science

9

Atmospheric Composition, Gas Giant Planets, Organic Phosphorus Compounds, Planetary Atmospheres, Chemical Reactions, Electric Discharges, Gas Mixtures, Reaction Kinetics, Space Environment Simulation

Scientific paper

Spark discharge and UV irradiation experiments were performed to investigate the interactions of CH4 and PH3 and the chemical evolution of PH3-H2O-NH3-CH4 mixtures in the upper atmospheres of the giant planets. The spark discharges were performed with various combinations of CH4-PH3, CH-PH3-H2, C2H6-PH3, and CH3PH2-CH4. PH3 alone and CH4-PH3 were exposed to 147 nm UV light. Sparks released into the hydrocarbon-phosphine mixtures induced the formation of alkylphosphines. The main products were H2, C2H6 and CH3PH2 when the initial mole fraction of PH3 was low. If the fraction of PH3 was high, the main products were He, CH3PH2 and P2H4. A gas phase chemical reaction model was defined for the formation reaction of methylphosphine. UV irradiation of CH4-PH3 usually produced a solid deposit and the constituents H2 and P2H4. The stability of the various reaction products in the Saturn and Jupiter atmospheres is discussed.

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