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Lockhart JPA, Bodipati B, Rizvi S. Investigating the Association Reactions of HOCH 2CO and HOCHCHO with O 2: A Quantum Computational and Master Equation Study. J Phys Chem A 2023; 127:4302-4316. [PMID: 37146175 DOI: 10.1021/acs.jpca.2c08163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Glycolaldehyde, HOCH2CHO, is an important multifunctional atmospheric trace gas formed in the oxidation of ethylene and isoprene and emitted directly from burning biomass. The initial step in the atmospheric photooxidation of HOCH2CHO yields HOCH2CO and HOCHCHO radicals; both of these radicals react rapidly with O2 in the troposphere. This study presents a comprehensive theoretical investigation of the HOCH2CO + O2 and HOCHCHO + O2 reactions using high-level quantum chemical calculations and energy-grained master equation simulations. The HOCH2CO + O2 reaction results in the formation of a HOCH2C(O)O2 radical, while the HOCHCHO + O2 reaction yields (HCO)2 + HO2. Density functional theory calculations have identified two open unimolecular pathways associated with the HOCH2C(O)O2 radical that yield HCOCOOH + OH or HCHO + CO2 + OH products; the former novel bimolecular product pathway has not been previously reported in the literature. Master equation simulations based on the potential energy surface calculated here for the HOCH2CO + O2 recombination reaction support experimental product yield data from the literature and indicate that, even at total pressures of 1 atm, the HOCH2CO + O2 reaction yields ∼11% OH at 298 K.
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Affiliation(s)
- J P A Lockhart
- Department of Chemistry, Adelphi University, One South Avenue, Garden City, New York 11530, United States
| | - B Bodipati
- Department of Chemistry, Adelphi University, One South Avenue, Garden City, New York 11530, United States
| | - S Rizvi
- Department of Chemistry, Adelphi University, One South Avenue, Garden City, New York 11530, United States
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Novelli A, Cho C, Fuchs H, Hofzumahaus A, Rohrer F, Tillmann R, Kiendler-Scharr A, Wahner A, Vereecken L. Experimental and theoretical study on the impact of a nitrate group on the chemistry of alkoxy radicals. Phys Chem Chem Phys 2021; 23:5474-5495. [DOI: 10.1039/d0cp05555g] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chemistry of nitrated alkoxy radicals, and its impact on RO2 measurements using the laser induced fluorescence (LIF) technique, is examined by a combined theoretical and experimental study.
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Affiliation(s)
- A. Novelli
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - C. Cho
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - H. Fuchs
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - A. Hofzumahaus
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - F. Rohrer
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - R. Tillmann
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - A. Kiendler-Scharr
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - A. Wahner
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
| | - L. Vereecken
- Institute for Energy and Climate Research
- Forschungszentrum Jülich GmbH
- 52428 Jülich
- Germany
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Wang SN, Wu RR, Wang LM. Role of hydrogen migrations in carbonyl peroxy radicals in the atmosphere. CHINESE J CHEM PHYS 2019. [DOI: 10.1063/1674-0068/cjcp1811265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Sai-nan Wang
- School of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Run-run Wu
- School of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Li-ming Wang
- School of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou 510006, China
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4
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Bouzidi H, Djehiche M, Gierczak T, Morajkar P, Fittschen C, Coddeville P, Tomas A. Low-Pressure Photolysis of 2,3-Pentanedione in Air: Quantum Yields and Reaction Mechanism. J Phys Chem A 2015; 119:12781-9. [DOI: 10.1021/acs.jpca.5b09448] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hichem Bouzidi
- Mines Douai, SAGE, 59508 Douai, France
- Université de Lille, 59000 Lille, France
| | - Mokhtar Djehiche
- Mines Douai, SAGE, 59508 Douai, France
- Université de Lille, 59000 Lille, France
| | - Tomasz Gierczak
- Faculty
of Chemistry, Warsaw University, ul. Pasteura 1, Poland
| | - Pranay Morajkar
- Université de Lille 1, PC2A, UMR 8522 CNRS/Lille 1, 59655 Villeneuve d’Ascq, France
| | - Christa Fittschen
- Université de Lille 1, PC2A, UMR 8522 CNRS/Lille 1, 59655 Villeneuve d’Ascq, France
| | - Patrice Coddeville
- Mines Douai, SAGE, 59508 Douai, France
- Université de Lille, 59000 Lille, France
| | - Alexandre Tomas
- Mines Douai, SAGE, 59508 Douai, France
- Université de Lille, 59000 Lille, France
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Papadimitriou VC, Karafas ES, Gierczak T, Burkholder JB. CH3CO + O2 + M (M = He, N2) Reaction Rate Coefficient Measurements and Implications for the OH Radical Product Yield. J Phys Chem A 2015; 119:7481-97. [PMID: 25803714 DOI: 10.1021/acs.jpca.5b00762] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The gas-phase CH3CO + O2 reaction is known to proceed via a chemical activation mechanism leading to the formation of OH and CH3C(O)OO radicals via bimolecular and termolecular reactive channels, respectively. In this work, rate coefficients, k, for the CH3CO + O2 reaction were measured over a range of temperature (241-373 K) and pressure (0.009-600 Torr) with He and N2 as the bath gas and used to characterize the bi- and ter-molecular reaction channels. Three independent experimental methods (pulsed laser photolysis-laser-induced fluorescence (PLP-LIF), pulsed laser photolysis-cavity ring-down spectroscopy (PLP-CRDS), and a very low-pressure reactor (VLPR)) were used to characterize k(T,M). PLP-LIF was the primary method used to measure k(T,M) in the high-pressure regime under pseudo-first-order conditions. CH3CO was produced by PLP, and LIF was used to monitor the OH radical bimolecular channel reaction product. CRDS, a complementary high-pressure method, measured k(295 K,M) over the pressure range 25-600 Torr (He) by monitoring the temporal CH3CO radical absorption following its production via PLP in the presence of excess O2. The VLPR technique was used in a relative rate mode to measure k(296 K,M) in the low-pressure regime (9-32 mTorr) with CH3CO + Cl2 used as the reference reaction. A kinetic mechanism analysis of the combined kinetic data set yielded a zero pressure limit rate coefficient, kint(T), of (6.4 ± 4) × 10(-14) exp((820 ± 150)/T) cm(3) molecule(-1) s(-1) (with kint(296 K) measured to be (9.94 ± 1.3) × 10(-13) cm(3) molecule(-1) s(-1)), k0(T) = (7.39 ± 0.3) × 10(-30) (T/300)(-2.2±0.3) cm(6) molecule(-2) s(-1), and k∞(T) = (4.88 ± 0.05) × 10(-12) (T/300)(-0.85±0.07) cm(3) molecule(-1) s(-1) with Fc = 0.8 and M = N2. A He/N2 collision efficiency ratio of 0.60 ± 0.05 was determined. The phenomenological kinetic results were used to define the pressure and temperature dependence of the OH radical yield in the CH3CO + O2 reaction. The present results are compared with results from previous studies and the discrepancies are discussed.
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Affiliation(s)
- Vassileios C Papadimitriou
- †Earth System Research Laboratory, Chemical Sciences Division, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, Colorado 80305, United States.,‡Cooperative Institute for Research in Environmental Sciences, Colorado University, 216 UCB, Boulder, Colorado 80309, United States.,§Laboratory of Photochemistry and Chemical Kinetics, Department of Chemistry, University of Crete, Vassilika Vouton, 71003 Heraklion, Crete, Greece
| | - Emmanuel S Karafas
- §Laboratory of Photochemistry and Chemical Kinetics, Department of Chemistry, University of Crete, Vassilika Vouton, 71003 Heraklion, Crete, Greece
| | - Tomasz Gierczak
- †Earth System Research Laboratory, Chemical Sciences Division, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, Colorado 80305, United States.,‡Cooperative Institute for Research in Environmental Sciences, Colorado University, 216 UCB, Boulder, Colorado 80309, United States
| | - James B Burkholder
- †Earth System Research Laboratory, Chemical Sciences Division, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, Colorado 80305, United States
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