Laser-induced fluorescence detection of the NS radical in sulfur and nitrogen doped methane flames

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(86)90098-2· OSTI ID:5753773

Jeffries, J B; Crosley, D R

The nitrogen sulfide radical, NS, has been observed for the first time in methane flames. Methane doped with H/sub 2/S and NH/sub 3/ was burned with oxygen, nitrous oxide, and air as oxidizers with equivalence ratios between 1.2 and 2.3. Laser-induced fluorescence (LIF) was used to detect the NS. Steady-state concentrations of NS were estimated from the LIF signal to be about 0.1% of the added sulfur concentration, indicating that NS may be an important reactive intermediate in these flames. This radical is a direct interconnection between the NO/sub x/ and SO/sub x/ production mechanisms.

• Research Organization: Molecular Physics Department, SRI International, Menlo Park, CA 94025
• OSTI ID: 5753773
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 64:1; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000* -- Natural Gas-- Combustion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
AIR
ALKANES
AMMONIA
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
COMBUSTION PRODUCTS
DOPED MATERIALS
ELEMENTS
EMISSION SPECTROSCOPY
FLAME PROPAGATION
FLAMES
FLUIDS
FLUORESCENCE SPECTROSCOPY
GASES
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KINETICS
LASER SPECTROSCOPY
MATERIALS
METHANE
NITRIDES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXIDIZERS
OXYGEN
OXYGEN COMPOUNDS
PNICTIDES
QUANTITY RATIO
RADICALS
REACTION KINETICS
SPECTROSCOPY
STEADY-STATE CONDITIONS
SULFIDES
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR DIOXIDE
SULFUR NITRIDES
SULFUR OXIDES