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Mairean CP, Roman C, Arsene C, Bejan IG, Olariu RI. Gas-Phase Kinetics of a Series of cis-3-Hexenyl Esters with OH Radicals under Simulated Atmospheric Conditions. J Phys Chem A 2024; 128:6274-6285. [PMID: 39031125 PMCID: PMC11299184 DOI: 10.1021/acs.jpca.4c03069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/26/2024] [Accepted: 07/09/2024] [Indexed: 07/22/2024]
Abstract
The present relative kinetic study reports on the experimentally determined gas-phase reaction rate coefficients of OH radicals with a series of seven cis-3-hexenyl esters. The experiments were carried out in the environmental simulation chamber made of quartz from the "Alexandru Ioan Cuza" University of Iasi (ESC-Q-UAIC), Romania, at a temperature of (298 ± 2) K and a total air pressure of (1000 ± 10) mbar. In situ long-path Fourier transform infrared (FTIR) spectroscopy was used to monitor cis-3-hexenyl formate (Z3HF, (Z)-CH3CH2CH═CH(CH2)2OC(O)H), cis-3-hexenyl acetate (Z3HAc, (Z)-CH3CH2CH═CH(CH2)2OC(O)CH3), cis-3-hexenyl isobutyrate (Z3HiB, (Z)-CH3CH2CH═CH(CH2)2OC(O)CH(CH3)2), cis-3-hexenyl 3-methylbutanoate (Z3H3MeB, (Z)-CH3CH2CH═CH(CH2)2OC(O)CH2CH(CH3)2), cis-3-hexenyl hexanoate (Z3HH, (Z)-CH3CH2CH═CH(CH2)2OC(O)(CH2)4CH3), cis-3-hexenyl cis-3-hexenoate (Z3HZ3H, (Z,Z)-CH3CH2CH═CH(CH2)2OC(O)CH2CH═CHCH2CH3), cis-3-hexenyl benzoate (Z3HBz, (Z)-CH3CH2CH═CH(CH2)2OC(O)C6H5), and the reference compounds. The following reaction rate coefficients (in 10-11 cm3 molecule-1 s-1) were obtained for the OH radical-initiated gas-phase oxidation of cis-3-hexenyl esters: (4.13 ± 0.45) for Z3HF, (4.19 ± 0.38) for Z3HAc, (4.84 ± 0.39) for Z3HiB, (5.39 ± 0.61) for Z3H3MeB, (7.00 ± 0.56) for Z3HH, (10.58 ± 1.40) for Z3HZ3H, and (3.41 ± 0.28) for Z3HBz. The results are discussed in terms of hexenyl ester reactivity and compared with the available literature data and structure-activity relationship (SAR) estimates. The atmospheric implications based on the average lifetimes of the investigated cis-3-hexenyl esters are discussed in the present study. The gas-phase rate coefficients for OH radical reactions are given herein for the first time for cis-3-hexenyl isobutyrate, cis-3-hexenyl 3-methylbutanoate, cis-3-hexenyl hexanoate cis-3-hexenyl cis-3-hexenoate, and cis-3-hexenyl benzoate. The newly determined gas-phase reaction rate coefficients provide new information for existing kinetic databases and contribute to the further development of SAR methodologies useful for predicting the reactivity of oxygenated volatile organic compounds.
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Affiliation(s)
- Ciprian-Paul Mairean
- Faculty
of Chemistry, “Alexandru Ioan Cuza”
University of Iasi, 11 Carol I, Iasi 700506, Romania
| | - Claudiu Roman
- Integrated
Centre of Environmental Science Studies in the North Eastern Region
- CERNESIM, “Alexandru Ioan Cuza”
University of Iasi, 11
Carol I, Iasi 700506, Romania
- Research
Center with Integrated Techniques for Atmospheric Aerosol Investigation
in Romania (RECENT AIR), “Alexandru
Ioan Cuza” University of Iasi, 11 Carol I, Iasi 700506, Romania
| | - Cecilia Arsene
- Faculty
of Chemistry, “Alexandru Ioan Cuza”
University of Iasi, 11 Carol I, Iasi 700506, Romania
- Integrated
Centre of Environmental Science Studies in the North Eastern Region
- CERNESIM, “Alexandru Ioan Cuza”
University of Iasi, 11
Carol I, Iasi 700506, Romania
- Research
Center with Integrated Techniques for Atmospheric Aerosol Investigation
in Romania (RECENT AIR), “Alexandru
Ioan Cuza” University of Iasi, 11 Carol I, Iasi 700506, Romania
| | - Iustinian-Gabriel Bejan
- Faculty
of Chemistry, “Alexandru Ioan Cuza”
University of Iasi, 11 Carol I, Iasi 700506, Romania
- Integrated
Centre of Environmental Science Studies in the North Eastern Region
- CERNESIM, “Alexandru Ioan Cuza”
University of Iasi, 11
Carol I, Iasi 700506, Romania
| | - Romeo-Iulian Olariu
- Faculty
of Chemistry, “Alexandru Ioan Cuza”
University of Iasi, 11 Carol I, Iasi 700506, Romania
- Integrated
Centre of Environmental Science Studies in the North Eastern Region
- CERNESIM, “Alexandru Ioan Cuza”
University of Iasi, 11
Carol I, Iasi 700506, Romania
- Research
Center with Integrated Techniques for Atmospheric Aerosol Investigation
in Romania (RECENT AIR), “Alexandru
Ioan Cuza” University of Iasi, 11 Carol I, Iasi 700506, Romania
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2
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Straccia C VG, Lugo PL, Rivela CB, Blanco MB, Wiesen P, Teruel MA. OH-initiated degradation of methyl 2-chloroacetoacetate and ethyl 2-chloroacetoacetate: Kinetics, products and mechanisms at 298 K and atmospheric pressure. CHEMOSPHERE 2021; 274:129659. [PMID: 33549882 DOI: 10.1016/j.chemosphere.2021.129659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Rate coefficients for the gas-phase reactions of OH radicals with CH3C(O)CHClC(O)OCH3 (k1) and CH3C(O)CHClC(O)OCH2CH3 (k2) were measured using the relative technique with different reference compounds. The experiments were performed at (298 ± 2) K and 750 Torr of nitrogen or synthetic air by in situ FTIR spectroscopy and GC-FID chromatography. The following rate coefficients (in units of cm3molecule-1 s-1) were obtained: k1FTIR= (2.70 ± 0.51) × 10-11; k1GC-FID= (2.30 ± 0.71) × 10-11 and k2FTIR= (3.37 ± 0.62) × 10-11; k2GC-FID= (3.26 ± 0.85) × 10-11. This work reports the first kinetic study for the reactions of OH radicals with the mentioned chloroacetoacetates. Additionally, product studies are reported in similar conditions of the kinetic experiments. Acetic acid, acetaldehyde, formyl chloride, and methyl 2-chloro-2-oxoacetate were positively identified and quantified as degradation products. According to the identified products, atmospheric chemical mechanisms were proposed. The environmental implications of these reactions were assessed by the tropospheric lifetimes calculations of the title chloroesters. Significant average ozone production of 4.16 ppm for CH3C(O)CHClC(O)OCH3 and 5.98 ppm for CH3C(O)CHClC(O)OCH2CH3, respectively were calculated.
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Affiliation(s)
- Vianni G Straccia C
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Pedro L Lugo
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Cynthia B Rivela
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Maria B Blanco
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Peter Wiesen
- Institute for Atmospheric and Environmental Research, University of Wuppertal, DE-42097, Wuppertal, Germany
| | - Mariano A Teruel
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina.
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3
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Kaipara R, Kumar A, Gupta P, Rajakumar B. Temperature-dependent kinetic study of the photo-oxidation reaction of vinyl butyrate with Cl atoms and fate of the formation of alkoxy radicals. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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4
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He X, Hansen N, Moshammer K. Molecular-Weight Growth in Ozone-Initiated Low-Temperature Oxidation of Methyl Crotonate. J Phys Chem A 2020; 124:7881-7892. [PMID: 32893634 DOI: 10.1021/acs.jpca.0c05684] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report experiments of ozone-initiated low-temperature oxidation of methyl crotonate (MC, CH3-CH═CH-C(O)OCH3) from 420 to 660 K in a near-atmospheric-pressure jet-stirred reactor using photoionization molecular-beam mass spectrometry as a sampling technique. In this temperature regime, no typical low-temperature combustion (LTC) reactions have been observed for MC when oxygen (O2) is used as the oxidizer. Upon ozone addition, significant oxidation of methyl crotonate is found. On the basis of experimentally observed energy-dependent mass peaks in combination with temperature-dependent mole fraction profiles and photoionization efficiency curves, we provide new insights into the methyl crotonate ozonolysis reaction network. The observed MC + O3 products, C5H8O5, are found to be related to the keto-hydroperoxides resulting from the isomerization of the primary ozonide. Evidence is also provided that molecular growth mainly results from cycloaddition reactions of the Criegee intermediate into aldehydes and alkenes as well as addition reactions of the Criegee intermediates to the double bond of methyl crotonate and sequential decomposition into ketones. Furthermore, species that contribute in large amounts to the low-temperature oxidation of methyl crotonate, like H2O2, CH3OOH, CH3OH, and HC(O)OH, are identified, and their mole fractions are reported. Additionally, preliminary modeling is performed which qualitatively captures the observed NTC behavior and reveals future research opportunities.
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Affiliation(s)
- X He
- Department of Physical Chemistry, Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany
| | - N Hansen
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - K Moshammer
- Department of Physical Chemistry, Physikalisch-Technische Bundesanstalt (PTB), 38116 Braunschweig, Germany
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5
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Kaipara R, Rajakumar B. Cl Atom-Initiated Photo-Oxidation Reactions of Vinyl Trifluoroacetate and Allyl Trifluoroacetate in Tropospheric Conditions. J Phys Chem A 2020; 124:2123-2139. [DOI: 10.1021/acs.jpca.9b11166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Revathy Kaipara
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - B. Rajakumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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6
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Cao H, Li X, He M, Zhao X. Computational study on the mechanism and kinetics of NO3-initiated atmosphere oxidation of vinyl acetate. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.09.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Gandolfo A, Marque S, Temime-Roussel B, Gemayel R, Wortham H, Truffier-Boutry D, Bartolomei V, Gligorovski S. Unexpectedly High Levels of Organic Compounds Released by Indoor Photocatalytic Paints. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11328-11337. [PMID: 30188114 DOI: 10.1021/acs.est.8b03865] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Photocatalytic paints based on titanium dioxide (TiO2) nanoparticles represent a promising treatment technology for cleaning the air at our dwellings. A few studies have shown that instead of elimination of harmful indoor air pollutants the production of carbonyl compounds occurs from the photocatalytic paints. Herein, we report unexpectedly high concentrations of volatile organic compounds (VOCs) released upon irradiation of photocatalytic paints which are meant to clean the air at our dwellings. The concentrations of the VOCs were measured continuously and online by PTR-ToF-MS (Proton Transfer Reaction-Time of Flight-Mass Spectrometry) connected to a well-established flow tube photoreactor. The PTR-ToF-MS analysis revealed the presence of 52 ions in the mass range between 20 and 490 amu, among which 43 have been identified. In particular very high emission rates were estimated of two relevant indoor air pollutants, formaldehyde and acetaldehyde as 355 μg h-1 and 257 μg h-1 for 1 m2, respectively. We suggest a detailed reaction mechanism responsible for the production of these harmful indoor air pollutants (formaldehyde and acetaldehyde, among the others). The hydroxyl radicals (OH) formed upon activation of TiO2, react with the organic constituent (butyl acrylate and vinyl acetate) of the paint binder lead to generation of an important number of organic compounds. We demonstrate that the TiO2 quantity and the organic content of the binder is of paramount importance with respect to the formation of VOCs, which should be considered for future optimization of this air remediation technology based on TiO2 nanoparticles.
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Affiliation(s)
- Adrien Gandolfo
- Aix Marseille Univ , CNRS, LCE, UMR 7376 , 13331 , Marseille , France
| | - Sylvain Marque
- Aix Marseille Univ , CNRS, ICR, UMR 7273 , 13297 , Marseille , France
| | | | - Rachel Gemayel
- Aix Marseille Univ , CNRS, LCE, UMR 7376 , 13331 , Marseille , France
| | - Henri Wortham
- Aix Marseille Univ , CNRS, LCE, UMR 7376 , 13331 , Marseille , France
| | | | | | - Sasho Gligorovski
- Aix Marseille Univ , CNRS, LCE, UMR 7376 , 13331 , Marseille , France
- State Key Laboratory of Organic Geochemistry , Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou 510 640 , China
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8
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Wang S, Du L, Zhu J, Tsona NT, Liu S, Wang Y, Ge M, Wang W. Gas-Phase Oxidation of Allyl Acetate by O 3, OH, Cl, and NO 3: Reaction Kinetics and Mechanism. J Phys Chem A 2018; 122:1600-1611. [PMID: 29388423 DOI: 10.1021/acs.jpca.7b10599] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Allyl acetate (AA) is widely used as monomer and intermediate in industrial chemicals synthesis. To evaluate the atmospheric outcome of AA, kinetics and mechanism of its gas-phase reaction with main atmospheric oxidants (O3, OH, Cl, and NO3) have been investigated in a Teflon reactor at 298 ± 3 K. Both absolute and relative rate methods were used to determine the rate constants for AA reactions with the four atmospheric oxidants. The obtained rate constants (in units of cm3 molecule-1 s-1) are (1.8 ± 0.3) × 10-18, (3.1 ± 0.7) × 10-11, (2.5 ± 0.5) × 10-10, and (1.1 ± 0.4) × 10-14, for reactions with O3, OH, Cl, and NO3, respectively. While results for reactions with O3, OH and Cl are in good agreement with previous studies, the kinetics for the reaction with NO3 is reported for the first time in this study. On the basis of determined rate constants, the tropospheric lifetimes of AA are τO3 = 9 days, τOH = 5 h, τCl = 5 days, τNO3 = 2 days. On the basis of the products study, reaction mechanisms for these oxidations have been proposed and the reaction products were detected using thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) and Fourier transform infrared spectroscopy (FTIR). Results show that the main products formed in these reactions are carbonyl compounds. In particular, 2-oxoethyl acetate was detected in all four AA oxidation reactions. Compared to previous studies, several new products were determined for reactions with OH and Cl. These results form a set of comprehensive kinetic data for AA reactions with main atmospheric oxidants and provide a better understanding of the degradation and atmospheric outcome of unsaturated acetate esters in the troposphere, during both daytime and nighttime.
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Affiliation(s)
- Shuyan Wang
- Environment Research Institute, Shandong University , Jinan 250100, China
| | - Lin Du
- Environment Research Institute, Shandong University , Jinan 250100, China
| | - Jianqiang Zhu
- Environment Research Institute, Shandong University , Jinan 250100, China
| | - Narcisse T Tsona
- Environment Research Institute, Shandong University , Jinan 250100, China
| | - Shijie Liu
- Environment Research Institute, Shandong University , Jinan 250100, China
| | - Yifeng Wang
- Key Lab of Colloid and Interface Science of the Education Ministry, Department of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, China
| | - Maofa Ge
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Wenxing Wang
- Environment Research Institute, Shandong University , Jinan 250100, China
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9
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Wang L, Zu L. Photodissociation dynamics of dinitrite at 355 nm: initiation of a reactive pathway. Phys Chem Chem Phys 2016; 18:25249-25256. [PMID: 27711402 DOI: 10.1039/c6cp03049a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinitrites are effective nitrosating reagents in preparative chemistry and their decomposition products are involved in the atmospheric reaction of volatile organic compounds with nitrogen oxides (NOx). In this work, photodissociation dynamics of five alkyl dinitrites were investigated by detecting the LIF spectra of the dissociation products and theoretical calculations. The results showed that the C-C bond connecting the two nitrosooxy (-ONO) functional groups was the weakest bond in vicinal dinitrites and aldehydes were the dissociation products. For dinitrites with two ONO groups separated by a CH2 group, vinoxy and 1-methylvinoxy radicals were detected as the fragments via photodissociation, indicating a different mechanism compared to thermal decomposition. This observation demonstrated that a new reactive pathway could be initiated by photolysis of dinitrites.
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Affiliation(s)
- Lingxuan Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
| | - Lily Zu
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
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10
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Li X, Cao H, Han D, Zhang S, He M. The mechanism and kinetic studies for Cl-initiated oxidation of allyl acetate in troposphere. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.04.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Cao H, Li X, Han D, Zhang S, He M. OH-initiated tropospheric photooxidation of allyl acetate: a theoretical study. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The mechanisms of OH-initiated oxidation of allyl acetate in the presence of O2/NO have been investigated by performing density functional theory calculations. Two patterns (OH-addition and H-abstraction) of the initial reaction and the subsequent reactions of the primarily produced intermediates (IM1, IM2, and IM4) have been proposed. The OH-addition reactions are more favorable than the H-abstraction reactions, but H-abstraction from the CH2 group cannot be ignored. The major degradation products have been identified. The rate coefficients and the branching ratios of the primary reactions are obtained over the temperature of 200–500 K and the pressure range of 0.001–1000 atm. The total rate coefficient is 3.17 × 10−11 cm3 molecule−1 s−1 at 298 K and 1 atm. With respect to the typical concentration of OH radical (2.0 × 106 molecule cm−3), the atmospheric lifetime of AAC is estimated to be 4.40 h.
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Affiliation(s)
- Haijie Cao
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
| | - Xin Li
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
| | - Dandan Han
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
| | - Shiqing Zhang
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
| | - Maoxia He
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
- Environment Research Institute, Shandong University, Jinan 250100, P. R. China
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12
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Rivela C, Blanco MB, Teruel MA. Kinetics of OH- and Cl-initiated oxidation of CH2CHC(O)O(CH2)2CH3 and CH2CHCH2C(O)O(CH2)2CH3 and fate of the alkoxy radicals formed. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Rodríguez A, Bravo I, Rodríguez D, Tajuelo M, Diaz-de-Mera Y, Aranda A. The environmental impact of unsaturated fluoroesters: atmospheric chemistry towards OH radicals and Cl atoms, radiative behavior and cumulative ozone creation. RSC Adv 2016. [DOI: 10.1039/c6ra00630b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Atmospheric lifetimes, reaction mechanisms, infrared spectra, radiative forcing efficiencies, global warming potentials and ozone creation potentials of the allyl and vinyl trifluoroacetate were determined to assess their environmental impact.
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Affiliation(s)
- Ana Rodríguez
- Faculty of Environmental Sciences and Biochemistry
- University of Castilla La Mancha
- 45071 Toledo
- Spain
| | - Iván Bravo
- Faculty of Pharmacy
- University of Castilla La Mancha
- 02071 Albacete
- Spain
| | - Diana Rodríguez
- Faculty of Environmental Sciences and Biochemistry
- University of Castilla La Mancha
- 45071 Toledo
- Spain
| | - Mercedes Tajuelo
- Faculty of Environmental Sciences and Biochemistry
- University of Castilla La Mancha
- 45071 Toledo
- Spain
| | - Yolanda Diaz-de-Mera
- Faculty of Chemical Sciences
- University of Castilla La Mancha
- 13071 Ciudad Real
- Spain
| | - Alfonso Aranda
- Faculty of Chemical Sciences
- University of Castilla La Mancha
- 13071 Ciudad Real
- Spain
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14
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Gibilisco RG, Uranga JG, Santiago AN, Teruel MA. Atmospheric Degradation of CH2═C(CH3)C(O)OCH3 Initiated by OH Radicals: Mechanistic Study and Quantification of CH3C(O)C(O)OCH3 in NOx Free Air. J Phys Chem A 2015. [DOI: 10.1021/acs.jpca.5b04273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rodrigo G. Gibilisco
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas and ‡Dpto. de Química
Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Jorge G. Uranga
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas and ‡Dpto. de Química
Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Ana N. Santiago
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas and ‡Dpto. de Química
Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Mariano A. Teruel
- Dpto. de Fisicoquímica, Facultad de Ciencias Químicas and ‡Dpto. de Química
Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Ciudad Universitaria, 5000 Córdoba, Argentina
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15
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Gibilisco RG, Blanco MB, Bejan I, Barnes I, Wiesen P, Teruel MA. Atmospheric Sink of (E)-3-Hexen-1-ol, (Z)-3-Hepten-1-ol, and (Z)-3-Octen-1-ol: Rate Coefficients and Mechanisms of the OH-Radical Initiated Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:7717-7725. [PMID: 26010217 DOI: 10.1021/es506125c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A kinetic study of the gas-phase reactions of OH radicals with three unsaturated biogenic alcohols, (E)-3-hexen-1-ol, (Z)-3-hepten-1-ol, and (Z)-3-octen-1-ol, has been performed. The rate coefficients obtained are (in units of 10(-10) cm(3) molecule(-1) s(-1)) k1 (OH + (E)-CH2(OH)CH2CH═CHCH2CH3) = (1.14 ± 0.14), k2 (OH + (Z)-CH2(OH)CH2CH═CHCH2CH2CH3) = (1.28 ± 0.23), and k3 (OH + (Z)-CH2(OH)CH2CH═CHCH2CH2CH2CH3) = (1.49 ± 0.35). In addition, a product study on the reactions of OH with (E)-3-hexen-1-ol and (Z)-3-hepten-1-ol is reported. All the experiments were performed at (298 ± 2) K and 1 atm of NOx-free air in a 1080 L photoreactor with in situ FTIR detection of organics. This work constitutes the first kinetic study of the reactions of OH radicals with (Z)-3-hepten-1-ol and (Z)-3-octen-1-ol as well as the first determination of the fate of the hydroxy alkoxy radicals formed in the title reactions. An analysis of the available rates of addition of OH and Cl to the double bond of different unsaturated alcohols at 298 K has shown that they can be related by the expression log kOH = (0.29 ± 0.04) log kCl - 10.8. The atmospheric lifetimes of the alcohols studies were estimated to be around 1 h for reaction with OH radicals. The products formed in the title reactions are mainly carbonylic compounds that can contribute to the formation of ozone and PANs-type compounds in the troposphere.
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Affiliation(s)
- Rodrigo G Gibilisco
- †Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.) and CONICET. Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - María B Blanco
- †Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.) and CONICET. Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Iustinian Bejan
- §Faculty of Chemistry, "Al. I. Cuza" University, Iasi, Romania
| | | | | | - Mariano A Teruel
- †Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.) and CONICET. Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
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Blanco MB, Bejan I, Barnes I, Wiesen P, Teruel MA. Tropospheric chemical degradation of vinyl and allyl acetate initiated by Cl atoms under high and low NOx conditions. RSC Adv 2015. [DOI: 10.1039/c5ra04975j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The products of the reactions of Cl atoms with vinyl acetate (VA) and allyl acetate (AA) have been investigated with and without NOx in a 1080 L chamber using in situ FTIR.
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Affiliation(s)
- María B. Blanco
- Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.)
- Dpto. de Fisicoquímica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba. Ciudad Universitaria
- 5000 Córdoba
| | - Iustinian Bejan
- Physikalische & Theoretische Chemie/FBC
- Bergische Universitaet Wuppertal
- Wuppertal
- Germany
- “Al. I. Cuza” University of Iasi
| | - Ian Barnes
- Physikalische & Theoretische Chemie/FBC
- Bergische Universitaet Wuppertal
- Wuppertal
- Germany
| | - Peter Wiesen
- Physikalische & Theoretische Chemie/FBC
- Bergische Universitaet Wuppertal
- Wuppertal
- Germany
| | - Mariano A. Teruel
- Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.)
- Dpto. de Fisicoquímica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba. Ciudad Universitaria
- 5000 Córdoba
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Li M, Li J, Cao H, Han D, He M. Mechanistic and kinetic investigations on the ozonolysis of isopropenyl acetate and propenyl acetate in atmosphere. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bravo I, Rodríguez A, Rodríguez D, Diaz-de-Mera Y, Notario A, Aranda A. Atmospheric Chemistry and Environmental Assessment of Inhalational Fluroxene. Chemphyschem 2013; 14:3834-42. [DOI: 10.1002/cphc.201300559] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Indexed: 11/08/2022]
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