UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds

Handle URI:
http://hdl.handle.net/10754/594255
Title:
UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds
Authors:
Rachidi, Mariam El ( 0000-0001-7392-6777 ) ; El Masri, A. ( 0000-0001-7861-6401 ) ; Roth, E.; Chakir, A.
Abstract:
This paper presents an experimental study of the UV spectra as well as the kinetics of gaseous phase OH-oxidation of morpholine, N-formylmorpholine (NFM) and N-acetlymorpholine (NAM). The spectra recorded using a UV spectrometer in the spectral range 200-280nm show that the analytes mainly absorb at wavelengths less than 280nm. This indicates that their photolysis potential in the troposphere is insignificant. Meanwhile, the OH-reactivity of these analytes was studied using a triple-jacket 2m long reactor equipped with a multi-reflection system and coupled to an FTIR spectrometer. The experiments were carried out at 295 and 313K for the amine and amides, respectively. The study was conducted in the relative mode using isoprene and benzaldehyde as reference compounds. The rate constants obtained are 14.0±1.9, 4.0±1.1 and 3.8±1.0 (in units of 10-11cm3molecule-1s-1) for morpholine, NFM and NAM respectively. These results are discussed in terms of reactivity and compared to those obtained for other oxy-nitrogenated species. In addition, the determined rate constants are used to estimate effective atmospheric lifetimes of the investigated morpholinic compounds with respect to reaction with OH radicals. © 2014 Elsevier Ltd.
KAUST Department:
Clean Combustion Research Center
Citation:
Al Rashidi M, El Masri A, Roth E, Chakir A (2014) UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds. Atmospheric Environment 88: 261–268. Available: http://dx.doi.org/10.1016/j.atmosenv.2014.01.057.
Publisher:
Elsevier BV
Journal:
Atmospheric Environment
Issue Date:
May-2014
DOI:
10.1016/j.atmosenv.2014.01.057
Type:
Article
ISSN:
1352-2310
Sponsors:
The authors would like to acknowledge the Region of Champagne-Ardenne for financing this study, as well as programs AQUAL and VOLUBILIS-AI no : .MA/10/226
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorRachidi, Mariam Elen
dc.contributor.authorEl Masri, A.en
dc.contributor.authorRoth, E.en
dc.contributor.authorChakir, A.en
dc.date.accessioned2016-01-19T14:44:28Zen
dc.date.available2016-01-19T14:44:28Zen
dc.date.issued2014-05en
dc.identifier.citationAl Rashidi M, El Masri A, Roth E, Chakir A (2014) UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds. Atmospheric Environment 88: 261–268. Available: http://dx.doi.org/10.1016/j.atmosenv.2014.01.057.en
dc.identifier.issn1352-2310en
dc.identifier.doi10.1016/j.atmosenv.2014.01.057en
dc.identifier.urihttp://hdl.handle.net/10754/594255en
dc.description.abstractThis paper presents an experimental study of the UV spectra as well as the kinetics of gaseous phase OH-oxidation of morpholine, N-formylmorpholine (NFM) and N-acetlymorpholine (NAM). The spectra recorded using a UV spectrometer in the spectral range 200-280nm show that the analytes mainly absorb at wavelengths less than 280nm. This indicates that their photolysis potential in the troposphere is insignificant. Meanwhile, the OH-reactivity of these analytes was studied using a triple-jacket 2m long reactor equipped with a multi-reflection system and coupled to an FTIR spectrometer. The experiments were carried out at 295 and 313K for the amine and amides, respectively. The study was conducted in the relative mode using isoprene and benzaldehyde as reference compounds. The rate constants obtained are 14.0±1.9, 4.0±1.1 and 3.8±1.0 (in units of 10-11cm3molecule-1s-1) for morpholine, NFM and NAM respectively. These results are discussed in terms of reactivity and compared to those obtained for other oxy-nitrogenated species. In addition, the determined rate constants are used to estimate effective atmospheric lifetimes of the investigated morpholinic compounds with respect to reaction with OH radicals. © 2014 Elsevier Ltd.en
dc.description.sponsorshipThe authors would like to acknowledge the Region of Champagne-Ardenne for financing this study, as well as programs AQUAL and VOLUBILIS-AI no : .MA/10/226en
dc.publisherElsevier BVen
dc.subjectAtmospheric life-timesen
dc.subjectCross sectionen
dc.subjectDegradation mechanismen
dc.subjectFTIR spectroscopyen
dc.subjectKineticen
dc.subjectMorpholineen
dc.subjectOH-radicalsen
dc.subjectUV spectraen
dc.titleUV spectra and OH-oxidation kinetics of gaseous phase morpholinic compoundsen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalAtmospheric Environmenten
dc.contributor.institutionUniversité de Reims, Laboratoire GSMA, Campus Moulin de la Housse, BP 1039, 51687 Reims cedex 02, Franceen
dc.contributor.institutionCNRS, Laboratoire GSMA-UMR 6089, UFR Sciences, BP 1039, 51687 Reims cedex 02, Franceen
kaust.authorRachidi, Mariam Elen
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