Production of organic hydroperoxides and hydrogen peroxide in hydrocarbon-nitrogen oxides-dry air system

Conference · Thu Sep 01 04:00:00 EDT 1988 · Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA)

OSTI ID:7166197

Junfeng, Zhang; Jinlong, Li; Xiaoyan, Tang; Wilson, W E

This study describes the formation of the hydrogen peroxide and organic peroxides in photochemical smog reaction. Indoor smog chamber experiments were conducted to assess the rate of hydrogen peroxide loss to chamber walls and measure the formation of H{sub 2}O{sub 2} and total peroxides (THP) from propene-NOx-Air system and pentane-NOx-Air system. The reaction temperature was 292-306{degree}C and relative humidity range from 20-42%. Pentane concentration was 0.77-34.6 ppmv. Propene concentration was 2.0-4.7 ppmv. (HC){sub 0}/(NOx){sub 0} ratio was 1.4-400. Irradiation of the HC-NOx-Air mixture was carried out in a collapsible cylindrical Teflon film reaction chamber which is about 1.2 M{sup 3} in volume and surrounded by 160 {times} 20 W black lamps. Light intensity measured by NO{sub 2} photolysis in purified air is K{sub 1} = 0.127 ({plus minus}) 0.010 min{sup {minus}1}. Irradiation was continued until the maximum of ozone concentration was reached or until there was not enough gas left for sampling. The concentrations of H{sub 2}O{sub 2} and THP were measured by a Dual Channel Hydrogen Peroxide - Hydroperoxide Analyzer made by G. Kok (USA) and calibrated with known liquid concentrations of H{sub 2}O{sub 2} solutions.

• OSTI ID: 7166197
• Report Number(s): CONF-8909232--
• Conference Information: Journal Name: Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA) Journal Volume: 28:2
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR
ALKANES
ALKENES
ATMOSPHERES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROLLED ATMOSPHERES
DECOMPOSITION
FLUIDS
GASES
HIGH TEMPERATURE
HUMIDITY
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PROPANE
PROPYLENE
QUANTITY RATIO
SMOG