UV and infrared absorption spectra and 248 nm photolysis of maleic anhydride (C4H2O3)

[Display omitted] •Room temperature gas-phase UV absorption spectrum of maleic anhydride.•Room temperature gas-phase infrared absorption spectrum of maleic anhydride.•Photolysis quantum and CO, CO2, and C2H2 product yields in the 248 nm pulsed laser.•photolysis of maleic anhydride. Maleic anhydride...

Full description

Saved in:
Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2019-09, Vol.382, p.111953, Article 111953
Main Authors: Marshall, Paul, Papadimitriou, Vassileios C., Papanastasiou, Dimitrios K., Roberts, James M., Burkholder, James B.
Format: Article
Language:English
Subjects:
Absorption
Absorption spectra
Acetylene
Aromatic compounds
Atmospheric models
Biodegradation
Burning
Calibration
Carbon dioxide
Carbon monoxide
Environmental impact
Fourier transforms
Infrared absorption
Infrared spectra
Infrared spectroscopy
Joint ventures
Maleic anhydride
Organic compounds
Photochemicals
Photochemistry
Photolysis
Pressure
Product yield
Pulsed lasers
Spectroscopy
Spectrum analysis
Temperature
VOCs
Volatile organic compounds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Room temperature gas-phase UV absorption spectrum of maleic anhydride.•Room temperature gas-phase infrared absorption spectrum of maleic anhydride.•Photolysis quantum and CO, CO2, and C2H2 product yields in the 248 nm pulsed laser.•photolysis of maleic anhydride. Maleic anhydride (C2H2(CO)2O, Furan-2,5-dione) is emitted into or formed in the atmosphere during bio-mass burning events as well as being a photochemical degradation product of some aromatic volatile organic compounds. The photochemical fate of maleic anhydride, however, is presently not well enough characterized to enable modeling of its impact on the environment and human health. Maleic anhydride is a strong UV absorbing molecule with a continuous spectrum that extends well into the long-wavelength atmospheric actinic region, >295 nm. In this study, the room temperature UV and infrared absorption spectra of maleic anhydride were measured and quantified using several complementary calibration methods. In addition, photolysis quantum yields and stable end-product yields were measured following its 248 nm pulsed laser photolysis. Photoproducts were measured at room temperature using Fourier transform infrared spectroscopy detection under slow flow conditions at total pressures in the range 100–600 Torr (Syn. Air). The maleic anhydride photolysis quantum yield was determined to be 0.85 ± 0.20, independent of pressure, with CO, CO2, and acetylene (C2H2) photo-products formed with a 1:1:1 stoichiometric ratio and a yield of 1 ± 0.15, independent of total pressure.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2019.111953