Heterogeneous chemical reaction of chlorine nitrate and water on sulfuric-acid surfaces at room temperature

• Main Authors: Rossi, Michel J., Malhotra, Ripudaman, Golden, David M.
• Format: Other/Unknown Material
• Language: unknown
• Published: 1987
• Subjects: 25; Antarctic; The Antarctic; Knudsen; Antarc*
• Online Access: http://ntrs.nasa.gov/search.jsp?R=19870045494

The use of H2SO4 as a catalyst for aerosol production of chlorine compounds in the chemistry of the antarctic stratosphere was investigated in laboratory trials. The experiments involved the gas surface collision rate of a molecule on a given surface during its residence time in a Knudsen cell in molecular flow conditions. Chlorine nitrate gas was made to flow through a chamber exposed to a container holding a 95.6 pct H2SO4 solution. Gas leaving the cell was scanned with a mass spectrometer. A sticking coefficient of 0.00032 was found for the chlorine nitrate, a value five times that previously reported.