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Hata H, Tonokura K. Kinetic study of isoprene hydroxy hydroperoxide radicals reacting with sulphur dioxide and their global-scale impact on sulphate formation. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:1147-1155. [PMID: 38856669 DOI: 10.1039/d4em00232f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Isoprene is the most relevant volatile organic compound emitted during the biosynthesis of metabolism processes. The oxidation of isoprene by a hydroxy radical (OH) is one of the main consumption schemes that generate six isomers of isoprene hydroxy hydroperoxide radicals (ISOPOOs). In this study, the rate constants of ISOPOOs + sulphur dioxide (SO2) reactions that eventually generate sulphur trioxide (SO3), the precursor of sulphate aerosol (SO42-(p)), are determined using microcanonical kinetic theories coupled with molecular structures and energies estimated by quantum chemical calculations. The results show that the reaction rates range from 10-27 to 10-20 cm3 molecule-1 s-1, depending on the atmospheric temperature and structure of the six ISOPOO isomers. The effect of SO3 formation from SO2 oxidation by ISOPOOs on the atmosphere is evaluated by a global chemical transport model, along with the rate constants obtained from microcanonical kinetic theories. The results show that SO3 formation is enhanced in regions with high SO2 or low nitrogen oxide (NO), such as China, the Middle East, and Amazon rainforests. However, the production rates of SO3 formation by ISOPOOs + SO2 reactions are eight orders of magnitude lower than that from the OH + SO2 reaction. This is indicative of SO42-(p) formation from the direct oxidation of SO2 by ISOPOOs, which is almost negligible in the atmosphere. The results of this study entail a detailed analysis of SO3 formation from gas-phase reactions of isoprene-derived products.
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Affiliation(s)
- Hiroo Hata
- Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan.
| | - Kenichi Tonokura
- Department of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwano-ha, Kashiwa, Chiba 277-8563, Japan
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2
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Jiang H, Liu Y, Xiao C, Yang X, Dong W. Reaction Kinetics of CH 2OO and syn-CH 3CHOO Criegee Intermediates with Acetaldehyde. J Phys Chem A 2024; 128:4956-4965. [PMID: 38868987 DOI: 10.1021/acs.jpca.4c01374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Criegee intermediates exert a crucial influence on atmospheric chemistry, functioning as powerful oxidants that facilitate the degradation of pollutants, and understanding their reaction kinetics is essential for accurate atmospheric modeling. In this study, the kinetics of CH2OO and syn-CH3CHOO reactions with acetaldehyde (CH3CHO) were investigated using a flash photolysis reaction tube coupled with the OH laser-induced fluorescence (LIF) method. The experimental results indicate that the reaction of syn-CH3CHOO with CH3CHO is independent of pressure in the range of 5-50 Torr when using Ar as the bath gas. However, the rate coefficient for the reaction between CH2OO and CH3CHO at 5.5 Torr was found to be lower compared to the near-constant values observed between 10 and 100 Torr. Furthermore, the reaction of syn-CH3CHOO with CH3CHO demonstrated positive temperature dependence from 283 to 330 K, with a rate coefficient of (2.11 ± 0.45) × 10-13 cm3 molecule-1 s-1 at 298 K. The activation energy and pre-exponential factor derived from the Arrhenius plot for this reaction were determined to be 2.32 ± 0.49 kcal mol-1 and (1.66 ± 0.61) × 10-11 cm3 molecule-1 s-1, respectively. In comparison, the reaction of CH2OO with CH3CHO exhibited negative temperature dependence, with a rate coefficient of (2.16 ± 0.39) × 10-12 cm3 molecule-1 s-1 at 100 Torr and 298 K and an activation energy and a pre-exponential factor of -1.73 ± 0.31 kcal mol-1 and (1.15 ± 0.21) × 10-13 cm3 molecule-1 s-1, respectively, over the temperature range of 280-333 K.
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Affiliation(s)
- Haotian Jiang
- Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yue Liu
- Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Chunlei Xiao
- Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Hefei National Laboratory, Hefei 230088, China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenrui Dong
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Hefei National Laboratory, Hefei 230088, China
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3
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Qian Y, Nguyen TL, Franke PR, Stanton JF, Lester MI. Nonstatistical Unimolecular Decay of the CH 2OO Criegee Intermediate in the Tunneling Regime. J Phys Chem Lett 2024; 15:6222-6229. [PMID: 38838341 DOI: 10.1021/acs.jpclett.4c01401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Unimolecular decay of the formaldehyde oxide (CH2OO) Criegee intermediate proceeds via a 1,3 ring-closure pathway to dioxirane and subsequent rearrangement and/or dissociation to many products including hydroxyl (OH) radicals that are detected. Vibrational activation of jet-cooled CH2OO with two quanta of CH stretch (17-18 kcal mol-1) leads to unimolecular decay at an energy significantly below the transition state barrier of 19.46 ± 0.25 kcal mol-1, refined utilizing a high-level electronic structure method HEAT-345(Q)Λ. The observed unimolecular decay rate of 1.6 ± 0.4 × 106 s-1 is 2 orders of magnitude slower than that predicted by statistical unimolecular reaction theory using several different models for quantum mechanical tunneling. The nonstatistical behavior originates from excitation of a CH stretch vibration that is orthogonal to the heavy atom motions along the reaction coordinate and slow intramolecular vibrational energy redistribution due to the sparse density of states.
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Affiliation(s)
- Yujie Qian
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Thanh Lam Nguyen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611 United States
| | - Peter R Franke
- Department of Chemistry, University of Florida, Gainesville, Florida 32611 United States
| | - John F Stanton
- Department of Chemistry, University of Florida, Gainesville, Florida 32611 United States
| | - Marsha I Lester
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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4
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Pham TV, Trang HTT. Mechanistic and Kinetic Approach on the Propargyl Radical (C 3H 3) with the Criegee Intermediate (CH 2OO). ACS OMEGA 2023; 8:16859-16868. [PMID: 37214685 PMCID: PMC10193399 DOI: 10.1021/acsomega.3c00491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/20/2023] [Indexed: 05/24/2023]
Abstract
The detailed reaction mechanism and kinetics of the C3H3 + CH2OO system have been thoroughly investigated. The CBS-QB3 method in conjunction with the ME/vRRKM theory has been applied to figure out the potential energy surface and rate constants for the C3H3 + CH2OO system. The C3H3 + CH2OO reaction leading to the CH2-[cyc-CCHCHOO] + H product dominates compared to the others. Rate constants of the reaction are dependent on temperatures (300-2000 K) and pressures (1-76,000 Torr), for which the rate constant of the channel C3H3 + CH2OO → CH2-[cyc-CCHCHOO] + H decreases at low pressures (1-76 Torr), but it increases with rising temperature if the pressure P ≥ 760 Torr. Rate constants of the three reaction channels C3H3 + CH2OO → CHCCH2CHO + OH, C3H3 + CH2OO → OCHCHCHCHO + H, and C3H3 + CH2OO → CHCHCHO + CH2O fluctuate with temperatures. The branching ratio of the C3H3 + CH2OO → CH2-[cyc-CCHCHOO] + H channel is the highest, accounting for 51-98.7% in the temperature range of 300-2000 K and 760 Torr pressure, while those of the channels forming the products PR10 (OCHCHCHCHO + H) and PR11 (CHCHCHO + CH2O) are the lowest, less than 0.1%, indicating that the contribution of these two reaction paths to the title reaction is insignificant. The proposed temperature- and pressure-dependent rate constants, together with the thermodynamic data of the species involved, can be confidently used for modeling CH2OO-related systems under atmospheric and combustion conditions.
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Affiliation(s)
- Tien V. Pham
- School
of Chemical Engineering, Hanoi University
of Science and Technology, Hanoi 100000, Vietnam
| | - Hoang T. T. Trang
- Department
of Chemistry, Hanoi Architectural University, Hanoi 100000, Vietnam
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5
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Huang M, Wang H, Shan X, Sheng L, Hu C, Gu X, Zhang W. Experimental study on synchrotron radiation photoionization of secondary organic aerosol derived from styrene ozonolysis. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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6
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Robinson C, Onel L, Newman J, Lade R, Au K, Sheps L, Heard DE, Seakins PW, Blitz MA, Stone D. Unimolecular Kinetics of Stabilized CH 3CHOO Criegee Intermediates: syn-CH 3CHOO Decomposition and anti-CH 3CHOO Isomerization. J Phys Chem A 2022; 126:6984-6994. [PMID: 36146923 PMCID: PMC9549458 DOI: 10.1021/acs.jpca.2c05461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/11/2022] [Indexed: 11/30/2022]
Abstract
The kinetics of the unimolecular decomposition of the stabilized Criegee intermediate syn-CH3CHOO has been investigated at temperatures between 297 and 331 K and pressures between 12 and 300 Torr using laser flash photolysis of CH3CHI2/O2/N2 gas mixtures coupled with time-resolved broadband UV absorption spectroscopy. Fits to experimental results using the Master Equation Solver for Multi-Energy well Reactions (MESMER) indicate that the barrier height to decomposition is 67.2 ± 1.3 kJ mol-1 and that there is a strong tunneling component to the decomposition reaction under atmospheric conditions. At 298 K and 760 Torr, MESMER simulations indicate a rate coefficient of 150-81+176 s-1 when tunneling effects are included but only 5-2+3 s-1 when tunneling is not considered in the model. MESMER simulations were also performed for the unimolecular isomerization of the stabilized Criegee intermediate anti-CH3CHOO to methyldioxirane, indicating a rate coefficient of 54-21+34 s-1 at 298 K and 760 Torr, which is not impacted by tunneling effects. Expressions to describe the unimolecular kinetics of syn- and anti-CH3CHOO are provided for use in atmospheric models, and atmospheric implications are discussed.
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Affiliation(s)
- Callum Robinson
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Lavinia Onel
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - James Newman
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Rachel Lade
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Kendrew Au
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Leonid Sheps
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Dwayne E. Heard
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Paul W. Seakins
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Mark A. Blitz
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
- National
Centre for Atmospheric Science, School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
| | - Daniel Stone
- School
of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
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7
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Zhao H, Wang S, Lu C, Tang Y, Guan J. Theoretical investigations on the reactions of criegee intermediates with SO
2
to form SO
3. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hui Zhao
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao P.R. China
| | - Shuangjun Wang
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao P.R. China
| | - Chenggang Lu
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao P.R. China
| | - Yizhen Tang
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao P.R. China
| | - Jing Guan
- School of Environmental and Municipal Engineering Qingdao University of Technology Qingdao P.R. China
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8
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Peltola J, Seal P, Vuorio N, Heinonen P, Eskola A. Solving the discrepancy between the direct and relative-rate determinations of unimolecular reaction kinetics of dimethyl-substituted Criegee intermediate (CH 3) 2COO using a new photolytic precursor. Phys Chem Chem Phys 2022; 24:5211-5219. [PMID: 35167635 DOI: 10.1039/d1cp02270a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have performed direct kinetic measurements of the thermal unimolecular reaction of (CH3)2COO in the temperature range 243-340 K and pressure range 5-350 Torr using time-resolved UV-absorption spectroscopy. We have utilized a new photolytic precursor, 2-bromo-2-iodopropane ((CH3)2CIBr), which photolysis at 213 nm in the presence of O2 produces acetone oxide, (CH3)2COO. The results show that the thermal unimolecular reaction is even more important main loss process of (CH3)2COO in the atmosphere than direct kinetic studies have suggested hitherto. The current experiments show that the unimolecular reaction rate of (CH3)2COO at 296 K and atmospheric pressure is 899 ± 42 s-1. Probably more importantly, current measurements bring the direct and relative-rate measurements of thermal unimolecular reaction kinetics of (CH3)2COO into quantitative agreement.
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Affiliation(s)
- Jari Peltola
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), Helsinki, FI-00014, Finland.
| | - Prasenjit Seal
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), Helsinki, FI-00014, Finland.
| | - Niko Vuorio
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), Helsinki, FI-00014, Finland.
| | - Petri Heinonen
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), Helsinki, FI-00014, Finland.
| | - Arkke Eskola
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), Helsinki, FI-00014, Finland.
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9
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Vereecken L, Novelli A, Kiendler-Scharr A, Wahner A. Unimolecular and water reactions of oxygenated and unsaturated Criegee intermediates under atmospheric conditions. Phys Chem Chem Phys 2022; 24:6428-6443. [DOI: 10.1039/d1cp05877k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ozonolysis of unsaturated hydrocarbons (VOCs) is one of the main oxidation processes in the atmosphere. The stabilized Criegee intermediates (SCI) formed are highly reactive oxygenated species that potentially influence the...
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10
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Saheb V. Detailed theoretical kinetics studies on the product formation from the reaction of the criegee intermediate CH2OO with H2O molecule. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02779-0] [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]
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11
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Wang R, Wen M, Liu S, Lu Y, Makroni L, Muthiah B, Zhang T, Wang Z, Wang Z. The favorable routes for the hydrolysis of CH 2OO with (H 2O) n (n = 1-4) investigated by global minimum searching combined with quantum chemical methods. Phys Chem Chem Phys 2021; 23:12749-12760. [PMID: 34041511 DOI: 10.1039/d0cp00028k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrolysis reaction of CH2OO with water and water clusters is believed to be a dominant sink for the CH2OO intermediate in the atmosphere. However, the favorable route for the hydrolysis of CH2OO with water clusters is still unclear. Here global minimum searching using the Tsinghua Global Minimum program has been introduced to find the most stable geometry of the CH2OO(H2O)n (n = 1-4) complex firstly. Then, based on these stable complexes, favorable hydrolysis of CH2OO with (H2O)n (n = 1-4) has been investigated using the quantum chemical method of CCSD(T)-F12a/cc-pVDZ-F12//B3LYP/6-311+G(2d,2p) and canonical variational transition state theory with small curvature tunneling. The calculated results have revealed that, although the contribution of CH2OO + (H2O)2 is the most obvious in the hydrolysis of CH2OO with (H2O)n (n = 1-4), the hydrolysis of CH2OO with (H2O)3 is not negligible in atmospheric gas-phase chemistry as its rate is close to the rate of the CH2OO + H2O reaction. The calculated results also show that, in a clean atmosphere, the CH2OO + (H2O)n (n = 1-2) reaction competes well with the CH2OO + SO2 reaction at 298 K when the concentrations of (H2O)n (n = 1-2) range from 20% relative humidity (RH) to 100% RH, and SO2 is 2.46 × 1011 molecules per cm3. Meanwhile, when the RH is higher than 40%, it is a new prediction that the CH2OO + (H2O)3 reaction can also compete well with the CH2OO + SO2 reaction at 298 K. Besides, Born-Oppenheimer molecular dynamics simulation results show that all the favorable channels of the CH2OO + (H2O)n (n = 1-3) reaction cannot react on a time scale of 100 ps in the NVT simulation. However, the NVE simulation results show that the CH2OO + (H2O)3 reaction can be finished well at 8.5 ps, indicating that the gas phase reaction of CH2OO + (H2O)3 is not negligible in the atmosphere. Overall, the present results have provided a definitive example of how the favorable hydrolysis of important atmospheric species with (H2O)n (n = 1-4) takes place, which will stimulate one to consider the favorable hydrolysis of water and water clusters with other Criegee intermediates and other important atmospheric species.
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Affiliation(s)
- Rui Wang
- School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China.
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12
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Liu J, Liu Y, Yang J, Zeng XC, He X. Directional Proton Transfer in the Reaction of the Simplest Criegee Intermediate with Water Involving the Formation of Transient H 3O . J Phys Chem Lett 2021; 12:3379-3386. [PMID: 33784110 DOI: 10.1021/acs.jpclett.1c00448] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The reaction of Criegee intermediates with water vapor has been widely known as a key Criegee reaction in the troposphere. Herein, we investigated the reaction of the smallest Criegee intermediate, CH2OO, with a water cluster through fragment-based ab initio molecular dynamics simulations at the MP2/aug-cc-pVDZ level. Our results show that the CH2OO-water reaction could occur not only at the air/water interface but also inside the water cluster. Moreover, more than one reactive water molecules are required for the CH2OO-water reaction, which is always initiated from the Criegee carbon atom and ends at the terminal Criegee oxygen atom via a directional proton transfer process. The observed reaction pathways include the loop-structure-mediated and stepwise mechanisms, and the latter involves the formation of transient H3O+. The lifetime of transient H3O+ is on the order of a few picoseconds, which may impact the atmospheric budget of the other trace gases in the actual atmosphere.
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Affiliation(s)
- Jinfeng Liu
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Yanqing Liu
- Department of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, China
| | - Jinrong Yang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, United States
| | - Xiao He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- NYU-ECNU Center for Computational Chemistry at NYU, Shanghai, Shanghai, 200062, China
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13
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Wang R, Wen M, Chen X, Mu R, Zeng Z, Chai G, Lily M, Wang Z, Zhang T. Atmospheric Chemistry of CH 2OO: The Hydrolysis of CH 2OO in Small Clusters of Sulfuric Acid. J Phys Chem A 2021; 125:2642-2652. [PMID: 33755485 DOI: 10.1021/acs.jpca.1c02006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The hydrolysis of CH2OO is not only a dominant sink for the CH2OO intermediate in the atmosphere but also a key process in the formation of aerosols. Herein, the reaction mechanism and kinetics for the hydrolysis of CH2OO catalyzed by the precursors of atmospheric aerosols, including H2SO4, H2SO4···H2O, and (H2SO4)2, have been studied theoretically at the CCSD(T)-F12a/cc-pVDZ-F12//B3LYP/6-311+G(2df,2pd) level. The calculated results show that the three catalysts decrease the energy barrier by over 10.3 kcal·mol-1; at the same time, the product formation of HOCH2OOH is more strongly bonded to the three catalysts than to the reactants CH2OO and H2O, revealing that small clusters of sulfuric acid promote the hydrolysis of CH2OO both kinetically and thermodynamically. Kinetic simulations show that the H2SO4-assisted reaction is more favorable than the H2SO4···H2O- (the pseudo-first-order rate constant being 27.9-11.5 times larger) and (H2SO4)2- (between 2.8 × 104 and 3.4 × 105 times larger) catalyzed reactions. Additionally, due to relatively lower concentration of H2SO4, the hydrolysis of CH2OO with H2SO4 cannot compete with the CH2OO + H2O or (H2O)2 reaction within the temperature range of 280-320 K, since its pseudo-first-order rate ratio is smaller by 4-7 or 6-8 orders of magnitude, respectively. However, the present results provide a good example of how small clusters of sulfuric acid catalyze the hydrolysis of an important atmospheric species.
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Affiliation(s)
- Rui Wang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Mingjie Wen
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Xu Chen
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Ruxue Mu
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Zhaopeng Zeng
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Guang Chai
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Makroni Lily
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China
| | - Zhiyin Wang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
| | - Tianlei Zhang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, P. R. China
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14
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Chhantyal-Pun R, Khan MAH, Taatjes CA, Percival CJ, Orr-Ewing AJ, Shallcross DE. Criegee intermediates: production, detection and reactivity. INT REV PHYS CHEM 2020. [DOI: 10.1080/0144235x.2020.1792104] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Craig A. Taatjes
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA, USA
| | - Carl J. Percival
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
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15
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Du B, Zhang W. Theoretical Insight into the Reaction Mechanism and Kinetics for the Criegee Intermediate of anti-PhCHOO with SO2. Molecules 2020; 25:molecules25133041. [PMID: 32635243 PMCID: PMC7412395 DOI: 10.3390/molecules25133041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, the density functional theory (DFT) and CCSD(T) method have been performed to gain insight into the possible products and detailed reaction mechanism of the Criegee intermediate (CI) of anti-PhCHOO with SO2 for the first time. The potential energy surfaces (PESs) have been depicted at the UCCSD(T)/6-311++G(d,p)//UB3LYP/6-311++G(d,p) levels of theory with ZPE correction. Two different five-membered ring adducts, viz., endo PhCHOOS(O)O (IM1) and exo PhCHOOS(O)O (IM2) have been found in the entrance of reaction channels. Both direct and indirect reaction pathways from IM1 and IM2 have been considered for the title reaction. Our calculations show that the formation of PhCHO+SO3 (P1) via indirect reaction pathways from IM1 is predominant in all the pathways, and the production of P1 via direct dissociation pathway of IM1 and indirect reaction pathways of IM2 cannot be neglected. Moreover, PhCOOH+SO2 (P2) initiated from IM2 is identified as the minor product. According to the kinetic calculation, the total rate constant for the anti-PhCHOO+SO2 reaction is estimated to be 6.98 × 10−10 cm3·molecule−1·s−1 at 298 K.
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Affiliation(s)
| | - Weichao Zhang
- Correspondence: ; Tel.: +86-516-8340-3165; Fax: +86-516-8340-3164
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16
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Newland MJ, Nelson BS, Muñoz A, Ródenas M, Vera T, Tárrega J, Rickard AR. Trends in stabilisation of Criegee intermediates from alkene ozonolysis. Phys Chem Chem Phys 2020; 22:13698-13706. [PMID: 32525165 DOI: 10.1039/d0cp00897d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Criegee Intermediates (CI), formed in the ozonolysis of alkenes, play a central role in tropospheric chemistry as an important source of radicals, with stabilised CI (SCI) able to participate in bimolecular reactions, affecting climate through the formation of inorganic and organic aerosol. However, total SCI yields have only been determined for a few alkene systems, while speciated SCI yields from asymmetrical alkenes are almost entirely unknown. Here we report for the first time a systematic experimental exploration of the stabilisation of CH2OO and (CH3)2COO CI, formed from ten alkene-ozone systems with a range of different sizes and structures, under atmospherically relevant conditions in the EUPHORE chamber. Experiments in the presence of excess SO2 (an SCI scavenger) determined total SCI yields from each alkene-ozone system. Comparison of primary carbonyl yields in the presence/absence of SO2 determined the stabilisation fraction of a given CI. The results show that the stabilisation of a given CI increases as the size of the carbonyl co-product increases. This is interpreted in terms of the nascent population of CI formed following decomposition of the primary ozonide (POZ) having a lower mean energy distribution when formed with a larger carbonyl co-product, as more of the energy from the POZ is taken by the carbonyl. These findings have significant implications for atmospheric modelling of alkene ozonolysis. Higher stabilisation of small CI formed from large alkenes is expected to lead to lower radical yields from CI decomposition, and higher SCI concentrations, increasing the importance of SCI bimolecular reactions.
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Affiliation(s)
- Mike J Newland
- Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, UK.
| | - Beth S Nelson
- Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, UK.
| | - Amalia Muñoz
- Fundación CEAM, EUPHORE Laboratories, Avda Charles R. Darwin 14. Parque Tecnológico, Valencia, Spain
| | - Milagros Ródenas
- Fundación CEAM, EUPHORE Laboratories, Avda Charles R. Darwin 14. Parque Tecnológico, Valencia, Spain
| | - Teresa Vera
- Fundación CEAM, EUPHORE Laboratories, Avda Charles R. Darwin 14. Parque Tecnológico, Valencia, Spain
| | - Joan Tárrega
- Fundación CEAM, EUPHORE Laboratories, Avda Charles R. Darwin 14. Parque Tecnológico, Valencia, Spain
| | - Andrew R Rickard
- Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, UK. and National Centre for Atmospheric Science, Wolfson Atmospheric Chemistry Laboratories, University of York, UK
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17
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Adame JA, Lope L, Sorribas M, Notario A, Yela M. SO 2 measurements in a clean coastal environment of the southwestern Europe: Sources, transport and influence in the formation of secondary aerosols. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 716:137075. [PMID: 32044490 DOI: 10.1016/j.scitotenv.2020.137075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/21/2020] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Two years of SO2 measurements at El Arenosillo observatory located in the Gulf of Cadiz (Atlantic Ocean) were investigated. Annual hourly averages of 1.9 ± 1.5 μg m-3 and p95 between 3 and 4.4 μg m-3 were recorded, showing clean and background environments. Monthly means vary between 1.5 and 2.4 μg m-3, a monthly evolution was not found. SO2 fields from the MERRA2 model were used to identify SO2 sources and its transport, which could be affecting the studied region. Although SO2 records were low, major conductive for SO2 increases were observed in specific periods. A selection methodology was applied to extract these events, which showed a mean of ~11 μg m-3. Surface meteorological observations and ERA5 meteorological fields from the ECMWF model were used to assess the weather conditions. SO2 increases, in cold months occurred under conditions governed by synoptic-scale. Two types of transport scenarios were identified: SO2 transport defined as direct impact, which is the sum of the plumes from Portugal and the Huelva area; and indirect impact, where SO2 and sulphate particle emissions from Portugal were transported and accumulated in the Gulf of Cadiz and then carried inland, where new particle formation were observed. Episodes with high SO2 concentrations were also reported in warm periods associated with pure sea-land breezes. The SO2 peaks under sea-land breezes were associated with the transport of SO2 from the south of Portugal to the Gulf of Cadiz, whereas SO2 from the east of the Iberian Peninsula and north of Africa reached the Mediterranean Sea and were then transported to the Atlantic Ocean following the Strait of Gibraltar. Blocking of the airflows from the Mediterranean Sea to the Atlantic Ocean turns the Gulf of Cadiz into a chemical reservoir, where chemical species such as SO2 can accumulate, triggering new particle formation processes.
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Affiliation(s)
- J A Adame
- Atmospheric Sounding Station - El Arenosillo, Atmospheric Research and Instrumentation Branch, National Institute for Aerospace Technology, INTA, Mazagón, Huelva, Spain.
| | - L Lope
- Atmospheric Sounding Station - El Arenosillo, Atmospheric Research and Instrumentation Branch, National Institute for Aerospace Technology, INTA, Mazagón, Huelva, Spain
| | - M Sorribas
- Atmospheric Sounding Station - El Arenosillo, Atmospheric Research and Instrumentation Branch, National Institute for Aerospace Technology, INTA, Mazagón, Huelva, Spain
| | - A Notario
- Universidad de Castilla-La Mancha, Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Ciudad Real, Spain; Universidad de Castilla La Mancha, Instituto de Investigación en Combustión y Contaminación Atmosférica, Camino de Moledores s/n, Ciudad Real, Spain
| | - M Yela
- Atmospheric Sounding Station - El Arenosillo, Atmospheric Research and Instrumentation Branch, National Institute for Aerospace Technology, INTA, Mazagón, Huelva, Spain
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18
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Direct conversion of terminal alkenes to aldehydes via ozonolysis reaction in rotating zigzag bed. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01933-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Stephenson TA, Lester MI. Unimolecular decay dynamics of Criegee intermediates: Energy-resolved rates, thermal rates, and their atmospheric impact. INT REV PHYS CHEM 2019. [DOI: 10.1080/0144235x.2020.1688530] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Thomas A. Stephenson
- Department of Chemistry and Biochemistry, Swarthmore College, Swarthmore, PA, USA
| | - Marsha I. Lester
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
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20
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Rapid unimolecular reaction of stabilized Criegee intermediates and implications for atmospheric chemistry. Nat Commun 2019; 10:2003. [PMID: 31043594 PMCID: PMC6494847 DOI: 10.1038/s41467-019-09948-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 04/03/2019] [Indexed: 11/10/2022] Open
Abstract
Elucidating atmospheric oxidation mechanisms is necessary for estimating the lifetimes of atmospheric species and understanding secondary organic aerosol formation and atmospheric oxidation capacity. We report an unexpectedly fast mechanistic pathway for the unimolecular reactions of large stabilized Criegee intermediates, which involves the formation of bicyclic structures from large Criegee intermediates containing an aldehyde group. The barrier heights of the mechanistic pathways are unexpectedly low – about 2–3 kcal/mol – and are at least 10 kcal/mol lower than those of hydrogen shift processes in large syn Criegee intermediates; and the calculated rate constants show that the mechanistic pathways are 105-109 times faster than those of the corresponding hydrogen shift processes. The present findings indicate that analogous low-energy pathways can now also be expected in other large Criegee intermediates and that oxidative capacity of some Criegee intermediates is smaller than would be predicted by existing models. Criegee intermediates have received much attention in atmospheric chemistry because of their importance in ozonolysis mechanisms. Here, using quantum mechanical kinetics, the authors reveal an unexpectedly fast mechanistic pathway for unimolecular reactions of large stabilized Criegee intermediates.
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21
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Wei WM, Hong S, Fang WJ, Zheng RH, Qin YD. Formation of OH radicals from the simplest Criegee intermediate CH2OO and water. Theor Chem Acc 2019. [DOI: 10.1007/s00214-018-2401-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Rousso AC, Hansen N, Jasper AW, Ju Y. Identification of the Criegee intermediate reaction network in ethylene ozonolysis: impact on energy conversion strategies and atmospheric chemistry. Phys Chem Chem Phys 2019; 21:7341-7357. [DOI: 10.1039/c9cp00473d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction network of the simplest Criegee intermediate (CI) CH2OO has been studied experimentally during the ozonolysis of ethylene.
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Affiliation(s)
- Aric C. Rousso
- Department of Mechanical and Aerospace Engineering
- Princeton University
- USA
| | - Nils Hansen
- Combustion Research Facility
- Sandia National Laboratories
- Livermore
- USA
| | - Ahren W. Jasper
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Lemont
- USA
| | - Yiguang Ju
- Department of Mechanical and Aerospace Engineering
- Princeton University
- USA
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23
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Sun C, Xu B, Lv L, Zhang S. Theoretical investigation on the reaction mechanism and kinetics of a Criegee intermediate with ethylene and acetylene. Phys Chem Chem Phys 2019; 21:16583-16590. [DOI: 10.1039/c9cp02644d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The competition among the possible pathways, the branching ratios of the adduct and the decomposition products at different temperatures and pressures have been evaluated.
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Affiliation(s)
- Cuihong Sun
- College of Chemical Engineering
- Shijiazhuang University
- Shijiazhuang
- P. R. China
| | - Baoen Xu
- College of Chemical Engineering
- Shijiazhuang University
- Shijiazhuang
- P. R. China
| | - Liqiang Lv
- College of Chemical Engineering
- Shijiazhuang University
- Shijiazhuang
- P. R. China
| | - Shaowen Zhang
- School of Chemistry and Chemical Engineering
- Key Laboratory of Cluster Science of Ministry of Education
- Beijing Institute of Technology
- South Zhongguancun Street #5
- Beijing
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24
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Giorio C, Campbell SJ, Bruschi M, Archibald AT, Kalberer M. Detection and identification of Criegee intermediates from the ozonolysis of biogenic and anthropogenic VOCs: comparison between experimental measurements and theoretical calculations. Faraday Discuss 2018; 200:559-578. [PMID: 28580994 PMCID: PMC5708353 DOI: 10.1039/c7fd00025a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ozonolysis of alkenes is a key reaction in the atmosphere, playing an important role in determining the oxidising capacity of the atmosphere and acting as a source of compounds that can contribute to local photochemical “smog”. The reaction products of the initial step of alkene-ozonolysis are Criegee intermediates (CIs), which have for many decades eluded direct experimental detection because of their very short lifetime. We use an innovative experimental technique, stabilisation of CIs with spin traps and analysis with proton transfer reaction mass spectrometry, to measure the gas phase concentration of a series of CIs formed from the ozonolysis of a range of both biogenic and anthropogenic alkenes in flow tube experiments. Density functional theory (DFT) calculations were used to assess the stability of the CI-spin trap adducts and show that the reaction of the investigated CIs with the spin trap occurs very rapidly except for the large β-pinene CI. Our measurement method was used successfully to measure all the expected CIs, emphasising that this new technique is applicable to a wide range of CIs with different molecular structures that were previously unidentified experimentally. In addition, for the first time it was possible to study CIs simultaneously in an even more complex reaction system consisting of more than one olefinic precursor. Comparison between our new experimental measurements, calculations of stability of the CI-spin trap adducts and results from numerical modelling, using the master chemical mechanism (MCM), shows that our new method can be used for the quantification of CIs produced in situ in laboratory experiments.
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Affiliation(s)
- Chiara Giorio
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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25
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26
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27
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Modeling Heterogeneous Oxidation of NOx, SO2 and Hydrocarbons in the Presence of Mineral Dust Particles under Various Atmospheric Environments. ACTA ACUST UNITED AC 2018. [DOI: 10.1021/bk-2018-1299.ch015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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28
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Sun C, Zhang S, Yue J, Zhang S. Theoretical Study on the Reaction Mechanism and Kinetics of Criegee Intermediate CH2OO with Acrolein. J Phys Chem A 2018; 122:8729-8737. [DOI: 10.1021/acs.jpca.8b06897] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cuihong Sun
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang, 050035, P. R. China
- School of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Shaoyan Zhang
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang, 050035, P. R. China
| | - Junyong Yue
- School of Literature and Media, Shijiazhuang University, Shijiazhuang 050035, P. R. China
| | - Shaowen Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, P. R. China
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29
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Stone D, Au K, Sime S, Medeiros DJ, Blitz M, Seakins PW, Decker Z, Sheps L. Unimolecular decomposition kinetics of the stabilised Criegee intermediates CH 2OO and CD 2OO. Phys Chem Chem Phys 2018; 20:24940-24954. [PMID: 30238099 DOI: 10.1039/c8cp05332d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Decomposition kinetics of stabilised CH2OO and CD2OO Criegee intermediates have been investigated as a function of temperature (450-650 K) and pressure (2-350 Torr) using flash photolysis coupled with time-resolved cavity-enhanced broadband UV absorption spectroscopy. Decomposition of CD2OO was observed to be faster than CH2OO under equivalent conditions. Production of OH radicals following CH2OO decomposition was also monitored using flash photolysis with laser-induced fluorescence (LIF), with results indicating direct production of OH in the v = 0 and v = 1 states in low yields. Master equation calculations performed using the Master Equation Solver for Multi-Energy well Reactions (MESMER) enabled fitting of the barriers for the decomposition of CH2OO and CD2OO to the experimental data. Parameterisations of the decomposition rate coefficients, calculated by MESMER, are provided for use in atmospheric models and implications of the results are discussed. For CH2OO, the MESMER fits require an increase in the calculated barrier height from 78.2 kJ mol-1 to 81.8 kJ mol-1 using a temperature-dependent exponential down model for collisional energy transfer with ΔEdown = 32.6(T/298 K)1.7 cm-1 in He. The low- and high-pressure limit rate coefficients are k1,0 = 3.2 × 10-4(T/298)-5.81exp(-12 770/T) cm3 s-1 and k1,∞ = 1.4 × 1013(T/298)0.06exp(-10 010/T) s-1, with median uncertainty of ∼12% over the range of experimental conditions used here. Extrapolation to atmospheric conditions yields k1(298 K, 760 Torr) = 1.1+1.5-1.1 × 10-3 s-1. For CD2OO, MESMER calculations result in ΔEdown = 39.6(T/298 K)1.3 cm-1 in He and a small decrease in the calculated barrier to decomposition from 81.0 kJ mol-1 to 80.1 kJ mol-1. The fitted rate coefficients for CD2OO are k2,0 = 5.2 × 10-5(T/298)-5.28exp(-11 610/T) cm3 s-1 and k2,∞ = 1.2 × 1013(T/298)0.06exp(-9800/T) s-1, with overall error of ∼6% over the present range of temperature and pressure. The extrapolated k2(298 K, 760 Torr) = 5.5+9.2-5.5 × 10-3 s-1. The master equation calculations for CH2OO indicate decomposition yields of 63.7% for H2 + CO2, 36.0% for H2O + CO and 0.3% for OH + HCO with no significant dependence on temperature between 400 and 1200 K or pressure between 1 and 3000 Torr.
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Affiliation(s)
- Daniel Stone
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Kendrew Au
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94551, USA.
| | - Samantha Sime
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | | | - Mark Blitz
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Paul W Seakins
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Zachary Decker
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94551, USA.
| | - Leonid Sheps
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94551, USA.
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30
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Long B, Bao JL, Truhlar DG. Unimolecular reaction of acetone oxide and its reaction with water in the atmosphere. Proc Natl Acad Sci U S A 2018; 115:6135-6140. [PMID: 29844185 PMCID: PMC6004451 DOI: 10.1073/pnas.1804453115] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Criegee intermediates (i.e., carbonyl oxides with two radical sites) are known to be important atmospheric reagents; however, our knowledge of their reaction kinetics is still limited. Although experimental methods have been developed to directly measure the reaction rate constants of stabilized Criegee intermediates, the experimental results cover limited temperature ranges and do not completely agree well with one another. Here we investigate the unimolecular reaction of acetone oxide [(CH3)2COO] and its bimolecular reaction with H2O to obtain rate constants with quantitative accuracy comparable to experimental accuracy. We do this by using CCSDT(Q)/CBS//CCSD(T)-F12a/DZ-F12 benchmark results to select and validate exchange-correlation functionals, which are then used for direct dynamics calculations by variational transition state theory with small-curvature tunneling and torsional and high-frequency anharmonicity. We find that tunneling is very significant in the unimolecular reaction of (CH3)2COO and its bimolecular reaction with H2O. We show that the atmospheric lifetimes of (CH3)2COO depend on temperature and that the unimolecular reaction of (CH3)2COO is the dominant decay mode above 240 K, while the (CH3)2COO + SO2 reaction can compete with the corresponding unimolecular reaction below 240 K when the SO2 concentration is 9 × 1010 molecules per cubic centimeter. We also find that experimental results may not be sufficiently accurate for the unimolecular reaction of (CH3)2COO above 310 K. Not only does the present investigation provide insights into the decay of (CH3)2COO in the atmosphere, but it also provides an illustration of how to use theoretical methods to predict quantitative rate constants of medium-sized Criegee intermediates.
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Affiliation(s)
- Bo Long
- College of Materials Science and Engineering, Guizhou Minzu University, 550025 Guiyang, China;
- Department of Chemistry, Chemical Theory Center, University of Minnesota, Minneapolis, MN 55455-0431
- Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455-0431
| | - Junwei Lucas Bao
- Department of Chemistry, Chemical Theory Center, University of Minnesota, Minneapolis, MN 55455-0431
- Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455-0431
| | - Donald G Truhlar
- Department of Chemistry, Chemical Theory Center, University of Minnesota, Minneapolis, MN 55455-0431;
- Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455-0431
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31
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Pfeifle M, Ma YT, Jasper AW, Harding LB, Hase WL, Klippenstein SJ. Nascent energy distribution of the Criegee intermediate CH2OO from direct dynamics calculations of primary ozonide dissociation. J Chem Phys 2018; 148:174306. [DOI: 10.1063/1.5028117] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Mark Pfeifle
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Yong-Tao Ma
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, USA
| | - Ahren W. Jasper
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Lawrence B. Harding
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - William L. Hase
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, USA
| | - Stephen J. Klippenstein
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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32
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Lester MI, Klippenstein SJ. Unimolecular Decay of Criegee Intermediates to OH Radical Products: Prompt and Thermal Decay Processes. Acc Chem Res 2018; 51:978-985. [PMID: 29613756 DOI: 10.1021/acs.accounts.8b00077] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Alkene ozonolysis is a primary oxidation pathway for anthropogenic and biogenic alkenes emitted into the troposphere. It is also an important source of atmospheric hydroxyl (OH) radicals, often called the atmosphere's detergent. Alkene ozonolysis takes place through a highly exothermic reaction pathway with multiple intermediates and barriers prior to releasing the OH radical products. This Account focuses on a key reaction intermediate with a carbonyl oxide functional group (-COO), known as the Criegee intermediate, which is formed along with a carbonyl coproduct in alkene ozonolysis reactions. Under atmospheric conditions, the initially energized Criegee intermediates may promptly decay to OH products or be collisionally stabilized prior to thermal decay to OH radicals and other products. Alternatively, the stabilized Criegee intermediates may undergo bimolecular reactions with atmospheric species, including water vapor and sulfur dioxide, which can lead to nucleation and growth of aerosols. The dimethyl-substituted Criegee intermediate, (CH3)2COO, is utilized in this Account to showcase recent efforts to experimentally measure and theoretically predict the rates for prompt and thermal unimolecular decay processes of prototypical Criegee intermediates under laboratory and atmospheric conditions. The experimental laboratory studies utilize an alternative synthesis method to efficiently generate Criegee intermediates via the reaction of iodoalkyl radicals with O2. Infrared excitation is then used to prepare the (CH3)2COO Criegee intermediates at specific energies in the vicinity of the transition state barrier or significantly below the barrier for 1,4-hydrogen transfer that leads to OH products. The rate of unimolecular decay is revealed through direct time-domain measurements of the appearance of OH products utilizing ultraviolet laser-induced fluorescence detection under collision-free conditions. Complementary high-level theoretical calculations are carried out to evaluate the transition state barrier and the energy-dependent unimolecular decay rates for (CH3)2COO using Rice-Ramsperger-Kassel-Marcus (RRKM) theory, which are in excellent accord with the experimental measurements. Quantum mechanical tunneling through the barrier, incorporated through Eckart and semiclassical transition state theory models, is shown to make a significant contribution to the unimolecular decay rates at energies in the vicinity of and much below the barrier. Master equation modeling is used to extend the energy-dependent unimolecular rates to thermal decay rates of (CH3)2COO under tropospheric conditions (high pressure limit), which agree well with recent laboratory measurements [ Smith et al. J. Phys. Chem. A 2016 , 120 , 4789 and Chhantyal-Pun et al. J. Phys. Chem. A 2017 , 121 , 4 - 15 ]. Again, tunneling is shown to enhance the thermal decay rate by orders of magnitude. The experimentally validated unimolecular rates are also utilized in modeling the prompt and thermal unimolecular decay of chemically activated (CH3)2COO formed upon ozonolysis of 2,3-dimethyl-2-butene under atmospheric conditions [ Drozd et al. J. Phys. Chem. A 2017 , 121 , 6036 - 6045 ]. Future challenges lie in extension of these spectroscopic and dynamical methods to Criegee intermediates derived from more complex ozonolysis reactions involving biogenic alkenes.
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Affiliation(s)
- Marsha I. Lester
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Stephen J. Klippenstein
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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Wennberg PO, Bates KH, Crounse JD, Dodson LG, McVay RC, Mertens LA, Nguyen TB, Praske E, Schwantes RH, Smarte MD, St Clair JM, Teng AP, Zhang X, Seinfeld JH. Gas-Phase Reactions of Isoprene and Its Major Oxidation Products. Chem Rev 2018. [PMID: 29522327 DOI: 10.1021/acs.chemrev.7b00439] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Isoprene carries approximately half of the flux of non-methane volatile organic carbon emitted to the atmosphere by the biosphere. Accurate representation of its oxidation rate and products is essential for quantifying its influence on the abundance of the hydroxyl radical (OH), nitrogen oxide free radicals (NO x), ozone (O3), and, via the formation of highly oxygenated compounds, aerosol. We present a review of recent laboratory and theoretical studies of the oxidation pathways of isoprene initiated by addition of OH, O3, the nitrate radical (NO3), and the chlorine atom. From this review, a recommendation for a nearly complete gas-phase oxidation mechanism of isoprene and its major products is developed. The mechanism is compiled with the aims of providing an accurate representation of the flow of carbon while allowing quantification of the impact of isoprene emissions on HO x and NO x free radical concentrations and of the yields of products known to be involved in condensed-phase processes. Finally, a simplified (reduced) mechanism is developed for use in chemical transport models that retains the essential chemistry required to accurately simulate isoprene oxidation under conditions where it occurs in the atmosphere-above forested regions remote from large NO x emissions.
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34
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Vereecken L, Novelli A, Taraborrelli D. Unimolecular decay strongly limits the atmospheric impact of Criegee intermediates. Phys Chem Chem Phys 2018; 19:31599-31612. [PMID: 29182168 DOI: 10.1039/c7cp05541b] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Stabilized Criegee intermediates (SCI) are reactive oxygenated species formed in the ozonolysis of hydrocarbons. Their chemistry could influence the oxidative capacity of the atmosphere by affecting the HOx and NOx cycles, or by the formation of low-volatility oxygenates enhancing atmospheric aerosols known to have an important impact on climate. The concentration of SCI in the atmosphere has hitherto not been determined reliably, and very little is known about their speciation. Here we show that the concentration of biogenic SCI is strongly limited by their unimolecular decay, based on extensive theory-based structure-activity relationships (SARs) for the reaction rates for decomposition. Reaction with water vapor, H2O and (H2O)2 molecules, is the second most important loss process; SARs are also proposed for these reactions. For SCI derived from the most common biogenic VOCs, we find that unimolecular decay is responsible for just over half of the loss, with reaction with water vapor the main remaining loss process. Reactions with SO2, NO2, or acids have negligible impact on the atmospheric SCI concentration. The ambient SCI concentrations are further characterized by analysis of field data with speciated hydrocarbon information, and by implementation of the chemistry in a global chemistry model. The results show a highly complex SCI speciation, with an atmospheric peak SCI concentrations below 1 × 105 molecule cm-3, and annual average SCI concentrations less than 7 × 103 molecule cm-3. We find that SCI have only a negligible impact on the global gas phase H2SO4 formation or removal of oxygenates, though some contribution around the equatorial belt, and in select regions, cannot be excluded.
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Affiliation(s)
- L Vereecken
- Forschungszentrum Jülich GmbH, Institute for Energy and Climate, IEK-8 Troposphere, 52428 Jülich, Germany.
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35
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Sheps L, Rotavera B, Eskola AJ, Osborn DL, Taatjes CA, Au K, Shallcross DE, Khan MAH, Percival CJ. The reaction of Criegee intermediate CH 2OO with water dimer: primary products and atmospheric impact. Phys Chem Chem Phys 2018; 19:21970-21979. [PMID: 28805226 DOI: 10.1039/c7cp03265j] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rapid reaction of the smallest Criegee intermediate, CH2OO, with water dimers is the dominant removal mechanism for CH2OO in the Earth's atmosphere, but its products are not well understood. This reaction was recently suggested as a significant source of the most abundant tropospheric organic acid, formic acid (HCOOH), which is consistently underpredicted by atmospheric models. However, using time-resolved measurements of reaction kinetics by UV absorption and product analysis by photoionization mass spectrometry, we show that the primary products of this reaction are formaldehyde and hydroxymethyl hydroperoxide (HMHP), with direct HCOOH yields of less than 10%. Incorporating our results into a global chemistry-transport model further reduces HCOOH levels by 10-90%, relative to previous modeling assumptions, which indicates that the reaction CH2OO + water dimer by itself cannot resolve the discrepancy between the measured and predicted HCOOH levels.
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Affiliation(s)
- Leonid Sheps
- Combustion Research Facility, Sandia National Laboratories, 7011 East Ave., MS 9055, Livermore, California 94551, USA.
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36
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Anglada JM, Solé A. Impact of the water dimer on the atmospheric reactivity of carbonyl oxides. Phys Chem Chem Phys 2018; 18:17698-712. [PMID: 27308802 DOI: 10.1039/c6cp02531e] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of twelve carbonyl oxides or Criegee intermediates with the water monomer and with the water dimer have been investigated employing high level theoretical methods. The study includes all possible carbonyl oxides arising from the isoprene ozonolysis and the methyl and dimethyl carbonyl oxides that originated from the reaction of ozone with several hydrocarbons. These reactions have great significance in the chemistry of the atmosphere because Criegee intermediates have recently been identified as important oxidants in the troposphere and as precursors of secondary organic aerosols. Moreover, water vapor is one of the most abundant trace gases in the atmosphere and the water dimer can trigger the atmospheric decomposition of Criegee intermediates. Our calculations show that the nature and position of the substituents in carbonyl oxides play a very important role in the reactivity of these species with both the water monomer and the water dimer. This fact results in differences in rate constants of up to six orders of magnitude depending on the carbonyl oxide. In this work we have defined an effective rate constant (keff) for the atmospheric reaction of carbonyl oxides with water vapor, which depends on the temperature and on the relative humidity as well. With this keff we show that the water dimer, despite its low tropospheric concentration, enhances the atmospheric reactivity of Criegee intermediates, but its effect changes with the nature of carbonyl oxide, ranging between 59 and 295 times in the most favorable case (syn-methyl carbonyl oxide), and between 1.4 and 3 times only in the most unfavorable case.
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Affiliation(s)
- Josep M Anglada
- Departament de Química Biològica i Modelització Molecular, (IQAC - CSIC), Jordi Girona, 18-26, E-08034 Barcelona, Spain.
| | - Albert Solé
- Departament de Ciència de Materials i Química Física, i Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franqués, 1, E-08028 Barcelona, Spain
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37
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Liu Y, Yin C, Smith MC, Liu S, Chen M, Zhou X, Xiao C, Dai D, Lin JJM, Takahashi K, Dong W, Yang X. Kinetics of the reaction of the simplest Criegee intermediate with ammonia: a combination of experiment and theory. Phys Chem Chem Phys 2018; 20:29669-29676. [DOI: 10.1039/c8cp05920a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The negative temperature dependence of the rate coefficient for CH2OO + NH3 reaction was observed using an OH laser-induced fluorescence method.
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Affiliation(s)
- Yiqiang Liu
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology
- Dalian
- P. R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
| | - Cangtao Yin
- Institute of Atomic and Molecular Science, Academia Sinica
- Taipei 10617
- Taiwan
| | - Mica C. Smith
- Institute of Atomic and Molecular Science, Academia Sinica
- Taipei 10617
- Taiwan
| | - Siyue Liu
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology
- Dalian
- P. R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
| | - Maodu Chen
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology
- Dalian
- P. R. China
| | - Xiaohu Zhou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
- China
- State Key Laboratory of Fine Chemicals and Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science & Technology, Dalian University of Technology
- Dalian 116024
| | - Chunlei Xiao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
- China
| | - Dongxu Dai
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
- China
| | - Jim Jr-Min Lin
- Institute of Atomic and Molecular Science, Academia Sinica
- Taipei 10617
- Taiwan
- Department of Chemistry, National Taiwan University
- Taipei 10617
| | - Kaito Takahashi
- Institute of Atomic and Molecular Science, Academia Sinica
- Taipei 10617
- Taiwan
| | - Wenrui Dong
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
- China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Dalian
- China
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Road, Guangdong
- Shenzhen
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38
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Laskin A, Lin P, Laskin J, Fleming LT, Nizkorodov S. Molecular Characterization of Atmospheric Brown Carbon. ACS SYMPOSIUM SERIES 2018. [DOI: 10.1021/bk-2018-1299.ch013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Alexander Laskin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Peng Lin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Julia Laskin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
| | - Lauren T. Fleming
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Sergey Nizkorodov
- Department of Chemistry, University of California, Irvine, California 92697, United States
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39
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Howes NUM, Mir ZS, Blitz MA, Hardman S, Lewis TR, Stone D, Seakins PW. Kinetic studies of C1 and C2 Criegee intermediates with SO2 using laser flash photolysis coupled with photoionization mass spectrometry and time resolved UV absorption spectroscopy. Phys Chem Chem Phys 2018; 20:22218-22227. [DOI: 10.1039/c8cp03115k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kinetics of CH2OO + SO2 confirmed over a wide range of [SO2]. Acetaldehyde observed as a major product of the reaction of CH3CHOO + SO2.
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Affiliation(s)
| | - Z. S. Mir
- School of Chemistry
- University of Leeds
- Leeds
- UK
| | - M. A. Blitz
- School of Chemistry
- University of Leeds
- Leeds
- UK
- National Centre for Atmospheric Science
| | - S. Hardman
- School of Chemistry
- University of Leeds
- Leeds
- UK
| | - T. R. Lewis
- School of Chemistry
- University of Leeds
- Leeds
- UK
| | - D. Stone
- School of Chemistry
- University of Leeds
- Leeds
- UK
| | - P. W. Seakins
- School of Chemistry
- University of Leeds
- Leeds
- UK
- National Centre for Atmospheric Science
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40
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Verma V, Sioutas C, Weber RJ. Oxidative Properties of Ambient Particulate Matter - An Assessment of the Relative Contributions from Various Aerosol Components and Their Emission Sources. ACS SYMPOSIUM SERIES 2018. [DOI: 10.1021/bk-2018-1299.ch019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Vishal Verma
- Department of Civil and Environmental Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, United States
| | - Constantinos Sioutas
- Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Rodney J. Weber
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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41
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Tadayon SV, Foreman ES, Murray C. Kinetics of the Reactions between the Criegee Intermediate CH2OO and Alcohols. J Phys Chem A 2017; 122:258-268. [DOI: 10.1021/acs.jpca.7b09773] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sara V. Tadayon
- Department of Chemistry, University of California, Irvine, Irvine California 92697, United States
| | - Elizabeth S. Foreman
- Department of Chemistry, University of California, Irvine, Irvine California 92697, United States
| | - Craig Murray
- Department of Chemistry, University of California, Irvine, Irvine California 92697, United States
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42
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Berndt T, Herrmann H, Kurtén T. Direct Probing of Criegee Intermediates from Gas-Phase Ozonolysis Using Chemical Ionization Mass Spectrometry. J Am Chem Soc 2017; 139:13387-13392. [DOI: 10.1021/jacs.7b05849] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Torsten Berndt
- Leibniz-Institute for Tropospheric Research, TROPOS, 04318 Leipzig, Germany
| | - Hartmut Herrmann
- Leibniz-Institute for Tropospheric Research, TROPOS, 04318 Leipzig, Germany
| | - Theo Kurtén
- Department
of Chemistry, University of Helsinki, 00014 Helsinki, Finland
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43
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Yajima R, Sakamoto Y, Inomata S, Hirokawa J. Relative Reactivity Measurements of Stabilized CH2OO, Produced by Ethene Ozonolysis, Toward Acetic Acid and Water Vapor Using Chemical Ionization Mass Spectrometry. J Phys Chem A 2017; 121:6440-6449. [DOI: 10.1021/acs.jpca.7b05065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryoji Yajima
- Graduate
School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Yosuke Sakamoto
- Graduate
School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
- Graduate
School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
- National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Satoshi Inomata
- National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Jun Hirokawa
- Faculty
of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan
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44
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Taatjes CA. Criegee Intermediates: What Direct Production and Detection Can Teach Us About Reactions of Carbonyl Oxides. Annu Rev Phys Chem 2017; 68:183-207. [DOI: 10.1146/annurev-physchem-052516-050739] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Craig A. Taatjes
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969
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45
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Fang Y, Barber VP, Klippenstein SJ, McCoy AB, Lester MI. Tunneling effects in the unimolecular decay of (CH3)2COO Criegee intermediates to OH radical products. J Chem Phys 2017; 146:134307. [DOI: 10.1063/1.4979297] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yi Fang
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323,
USA
| | - Victoria P. Barber
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323,
USA
| | - Stephen J. Klippenstein
- Chemical Sciences and Engineering Division,
Argonne National Laboratory, Argonne, Illinois 60439,
USA
| | - Anne B. McCoy
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Marsha I. Lester
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323,
USA
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46
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Abstract
In the troposphere, the fate of gas-phase Criegee intermediates (CIs) is deemed to be determined by their reactions with water molecules. Here it is shown that CIs produced in situ on the surface of water/acetonitrile (W/AN) solutions react competitively with millimolar carboxylic acids. Present experiments probe, via online electrospray mass spectrometry, CIs' chemistry on the surface of α-humulene and β-caryophyllene in W/AN microjets exposed to O3(g) for <10 μs. Mass-specific identification lets us establish the progeny of products and intermediates generated in the early stages of CIs' reactions with H2O, D2O, H218O, and n-alkyl-COOH (n = 1-7). It is found that n-alkyl-COOH competes for CIs with interfacial water, their competitiveness being an increasing function of n. Present findings demonstrate that CIs can react with species other than H2O on the surface of aqueous organic aerosols due to the low water concentrations prevalent in the outermost interfacial layers.
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Affiliation(s)
- Shinichi Enami
- National Institute for Environmental Studies , 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - A J Colussi
- Linde Center for Global Environmental Science, California Institute of Technology , Pasadena, California 91125, United States
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47
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Giorio C, Campbell SJ, Bruschi M, Tampieri F, Barbon A, Toffoletti A, Tapparo A, Paijens C, Wedlake AJ, Grice P, Howe DJ, Kalberer M. Online Quantification of Criegee Intermediates of α-Pinene Ozonolysis by Stabilization with Spin Traps and Proton-Transfer Reaction Mass Spectrometry Detection. J Am Chem Soc 2017; 139:3999-4008. [PMID: 28201872 DOI: 10.1021/jacs.6b10981] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Biogenic alkenes, which are among the most abundant volatile organic compounds in the atmosphere, are readily oxidized by ozone. Characterizing the reactivity and kinetics of the first-generation products of these reactions, carbonyl oxides (often named Criegee intermediates), is essential in defining the oxidation pathways of organic compounds in the atmosphere but is highly challenging due to the short lifetime of these zwitterions. Here, we report the development of a novel online method to quantify atmospherically relevant Criegee intermediates (CIs) in the gas phase by stabilization with spin traps and analysis with proton-transfer reaction mass spectrometry. Ozonolysis of α-pinene has been chosen as a proof-of-principle model system. To determine unambiguously the structure of the spin trap adducts with α-pinene CIs, the reaction was tested in solution, and reaction products were characterized with high-resolution mass spectrometry, electron paramagnetic resonance, and nuclear magnetic resonance spectroscopy. DFT calculations show that addition of the Criegee intermediate to the DMPO spin trap, leading to the formation of a six-membered ring adduct, occurs through a very favorable pathway and that the product is significantly more stable than the reactants, supporting the experimental characterization. A flow tube set up has been used to generate spin trap adducts with α-pinene CIs in the gas phase. We demonstrate that spin trap adducts with α-pinene CIs also form in the gas phase and that they are stable enough to be detected with online mass spectrometry. This new technique offers for the first time a method to characterize highly reactive and atmospherically relevant radical intermediates in situ.
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Affiliation(s)
- Chiara Giorio
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Steven J Campbell
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Maurizio Bruschi
- Dipartimento di Scienze dell'Ambiente e del Territorio e di Scienze della Terra, Università degli Studi di Milano Bicocca , Piazza della Scienza 1, Milano 20126, Italy
| | - Francesco Tampieri
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , via Marzolo 1, Padova 35131, Italy
| | - Antonio Barbon
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , via Marzolo 1, Padova 35131, Italy
| | - Antonio Toffoletti
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , via Marzolo 1, Padova 35131, Italy
| | - Andrea Tapparo
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , via Marzolo 1, Padova 35131, Italy
| | - Claudia Paijens
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Andrew J Wedlake
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Peter Grice
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Duncan J Howe
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Markus Kalberer
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom
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48
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Smith MC, Chao W, Kumar M, Francisco JS, Takahashi K, Lin JJM. Temperature-Dependent Rate Coefficients for the Reaction of CH2OO with Hydrogen Sulfide. J Phys Chem A 2017; 121:938-945. [DOI: 10.1021/acs.jpca.6b12303] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mica C. Smith
- Institute
of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
| | - Wen Chao
- Institute
of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Manoj Kumar
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Joseph S. Francisco
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Kaito Takahashi
- Institute
of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
| | - Jim Jr-Min Lin
- Institute
of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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49
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Sakamoto Y, Yajima R, Inomata S, Hirokawa J. Water vapour effects on secondary organic aerosol formation in isoprene ozonolysis. Phys Chem Chem Phys 2017; 19:3165-3175. [DOI: 10.1039/c6cp04521a] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A portion of stabilized Criegee intermediates formed in isoprene ozonolysis can be involved in SOA formation even under humid conditions.
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Affiliation(s)
- Yosuke Sakamoto
- Graduate School of Global Environmental Studies
- Kyoto University
- Kyoto
- Japan
- Graduate School of Human and Environmental Studies
| | - Ryoji Yajima
- Graduate School of Environmental Science
- Hokkaido University
- Sapporo
- Japan
| | - Satoshi Inomata
- Center for Global Environmental Research
- National Institute for Environmental Studies
- Tsukuba
- Japan
| | - Jun Hirokawa
- Faculty of Environmental Earth Science
- Hokkaido University
- Sapporo
- Japan
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50
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Yin C, Takahashi K. How does substitution affect the unimolecular reaction rates of Criegee intermediates? Phys Chem Chem Phys 2017; 19:12075-12084. [DOI: 10.1039/c7cp01091e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unimolecular reaction rates of Criegee intermediates show substitution effect.
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Affiliation(s)
- Cangtao Yin
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei
- Taiwan
| | - Kaito Takahashi
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei
- Taiwan
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