Flow Reactors
Contacts : Wahid MELLOUKI, Yuri BEDJANIAN
Laminar flow reactor – particle counter
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• Double-walled glass tube (length = 100 cm and internal diameter = 10 cm) • Temperature : 250 – 350 K • Pressure : 760 Torr • Ozone production : mercury lamp • Ozone detection : UV absorption • Associated means of detection: granulometer (SMPS), ozone monitor, TFRI Current application : étude de la formation d’aérosols organiques secondaires (AOS) par ozonolyse de composés organiques volatils |
Laminar Flow Reactor – Electronic Impact Mass Spectrometer
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• Double-walled Quartz and Pyrex tube (length: 45 cm and internal diameter: 2.4 cm) • Temperature : 220 – 1000 K • Pressure : 0,2 – 10 Torr • Production of radicals by microwave discharge • Associated analytical means : HPLC Applications : Study of the interactions of atmospheric oxidants with substrates characteristic of atmospheric aerosols (marine, mineral, soot); study of radical reactions of interest for combustion and the atmosphere. |
Turbulent Flow Reactor – Chemical Ionisation Mass Spectrometer
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• Glass tube (length = 80 cm and internal diameter = 2.4 cm) • Temperature : 220 – 320 K • Pressure : 100 – 700 Torr • Production of radicals by microwave discharge • Chemical ionization: positive or negative mode Current application : Studies of the mechanisms of radical gas-phase reactions in the temperature and pressure ranges of the troposphere and lower stratosphere. |
