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dc.contributor.authorEs-sebbar, Et-touhami
dc.contributor.authorAlrefae, Majed
dc.contributor.authorFarooq, Aamir
dc.date.accessioned2015-08-03T11:45:06Z
dc.date.available2015-08-03T11:45:06Z
dc.date.issued2014-01
dc.identifier.issn00224073
dc.identifier.doi10.1016/j.jqsrt.2013.09.019
dc.identifier.urihttp://hdl.handle.net/10754/563295
dc.description.abstractPropylene, a by-product of biomass burning, thermal cracking of hydrocarbons and incomplete combustion of fossil fuels, is a ubiquitous molecule found in the environment and atmosphere. Accurate infrared (IR) cross-sections and integrated band intensities of propylene are essential for quantitative measurements and atmospheric modeling. We measured absolute IR cross-sections of propylene using Fourier Transform Infrared (FTIR) Spectroscopy over the wavenumber range of 400-6500cm-1 and at gas temperatures between 296 and 460K. We recorded these spectra at spectral resolutions ranging from 0.08 to 0.5cm-1 and measured the integrated band intensities for a number of vibrational bands in certain spectral regions. We then compared the integrated band intensities measured at room temperature with values derived from the National Institute of Standards and Technology (NIST) and the Pacific Northwest National Laboratory (PNNL) databases. Our results agreed well with the results reported in the two databases with a maximum deviation of about 4%. The peak cross-sections for the primary bands decreased by about 20-54% when the temperature increased from 296 to 460K. Moreover, we determined the integrated band intensities as a function of temperature for certain features in various spectral regions; we found no significant temperature dependence over the range of temperatures considered here. We also studied the effect of temperature on absorption cross-section using a Difference Frequency Generation (DFG) laser system. We compared the DFG results with those obtained from the FTIR study at certain wavenumbers over the 2850-2975cm-1 range and found a reasonable agreement with less than 10% discrepancy. © 2013 Elsevier Ltd.
dc.description.sponsorshipWe are grateful for the financial support provided by King Abdullah University of Science of Technology (KAUST) and the Clean Combustion Research Center (CCRC) at KAUST.
dc.publisherElsevier BV
dc.subjectDFG spectroscopy
dc.subjectFTIR
dc.subjectIntegrated band intensity
dc.subjectIR cross-section
dc.subjectPropylene
dc.titleInfrared cross-sections and integrated band intensities of propylene: Temperature-dependent studies
dc.typeArticle
dc.contributor.departmentChemical Kinetics & Laser Sensors Laboratory
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Quantitative Spectroscopy and Radiative Transfer
kaust.personEs-sebbar, Et-touhami
kaust.personAlrefae, Majed
kaust.personFarooq, Aamir
kaust.acknowledged.supportUnitClean Combustion Research Center (CCRC)


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