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Demireva M, Au K, Hansen N, Sheps L. Time-resolved quantification of key species and mechanistic insights in low-temperature tetrahydrofuran oxidation. Phys Chem Chem Phys 2024; 26:10357-10368. [PMID: 38502092 DOI: 10.1039/d3cp06227a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
We investigate the kinetics and report the time-resolved concentrations of key chemical species in the oxidation of tetrahydrofuran (THF) at 7500 torr and 450-675 K. Experiments are carried out using high-pressure multiplexed photoionization mass spectrometry (MPIMS) combined with tunable vacuum ultraviolet radiation from the Berkely Lab Advanced Light Source. Intermediates and products are quantified using reference photoionization (PI) cross sections, when available, and constrained by a global carbon balance tracking approach at all experimental temperatures simultaneously for the species without reference cross sections. From carbon balancing, we determine time-resolved concentrations for the ROO˙ and ˙OOQOOH radical intermediates, butanedial, and the combined concentration of ketohydroperoxide (KHP) and unsaturated hydroperoxide (UHP) products stemming from the ˙QOOH + O2 reaction. Furthermore, we quantify a product that we tentatively assign as fumaraldehyde, which arises from UHP decomposition via H2O or ˙OH + H loss. The experimentally derived species concentrations are compared with model predictions using the most recent literature THF oxidation mechanism of Fenard et al., (Combust. Flame, 2018, 191, 252-269). Our results indicate that the literature mechanism significantly overestimates THF consumption and the UHP + KHP concentration at our conditions. The model predictions are sensitive to the rate coefficient for the ROO˙ isomerization to ˙QOOH, which is the gateway for radical chain propagating and branching pathways. Comparisons with our recent results for cyclopentane (Demireva et al., Combust. Flame, 2023, 257, 112506) provide insights into the effect of the ether group on reactivity and highlight the need to determine accurate rate coefficients of ROO˙ isomerization and subsequent reactions.
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Affiliation(s)
- Maria Demireva
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA.
| | - Kendrew Au
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA.
| | - Nils Hansen
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA.
| | - Leonid Sheps
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA.
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2
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Doner AC, Zádor J, Rotavera B. Unimolecular Reactions of 2,4-Dimethyloxetanyl Radicals. J Phys Chem A 2023; 127:2591-2600. [PMID: 36898134 PMCID: PMC10041641 DOI: 10.1021/acs.jpca.2c08290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Alkyl-substituted oxetanes are cyclic ethers formed via unimolecular reactions of QOOH radicals produced via a six-membered transition state in the preceding isomerization step of organic peroxy radicals, ROO. Owing to radical isomer-specific formation pathways, cyclic ethers are unambiguous proxies for inferring QOOH reaction rates. Therefore, accounting for subsequent oxidation of cyclic ethers is important in order to accurately determine rates for QOOH → products. Cyclic ethers can react via unimolecular reaction (ring-opening) or via bimolecular reaction with O2 to form cyclic ether-peroxy adducts. The computations herein provide reaction mechanisms and theoretical rate coefficients for the former type in order to determine competing pathways for the cyclic ether radicals. Rate coefficients of unimolecular reactions of 2,4-dimethyloxetanyl radicals were computed using master equation modeling from 0.01 to 100 atm and from 300 to 1000 K. Coupled-cluster methods were utilized for stationary-point energy calculations, and uncertainties in the computed rate coefficients were accounted for using variation in barrier heights and in well depths. The potential energy surfaces reveal accessible channels to several species via crossover reactions, such as 2-methyltetrahydrofuran-5-yl and pentanonyl isomers. For the range of temperature over which 2,4-dimethyloxetane forms during n-pentane oxidation, the following are the major channels: 2,4-dimethyloxetan-1-yl → acetaldehyde + allyl, 2,4-dimethyloxetan-2-yl → propene + acetyl, and 2,4-dimethyloxetan-3-yl → 3-butenal + methyl, or, 1-penten-3-yl-4-ol. Well-skipping reactions were significant in a number of channels and also exhibited a markedly different pressure dependence. The calculations show that rate coefficients for ring-opening are approximately an order of magnitude lower for the tertiary 2,4-dimethyloxetanyl radicals than for the primary and secondary 2,4-dimethyloxetanyl radicals. Unlike for reactions of the corresponding ROO radicals, however, unimolecular rate coefficients are independent of the stereochemistry. Moreover, rate coefficients of cyclic ether radical ring-opening are of the same order of magnitude as O2 addition, underscoring the point that a competing network of reactions is necessary to include for accurate chemical kinetics modeling of species profiles for cyclic ethers.
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Affiliation(s)
| | - Judit Zádor
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550, United States
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3
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Zhang C, Wang Y, Yang W, Zheng J. Biobased 2,5-Dimethyltetrahydrofuran as a Green Aprotic Ether Solvent. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chen Zhang
- School of Resources and Environment, Nanchang University, 999 XuFu Road, Nanchang 330031, China
| | - Yufen Wang
- School of Resources and Environment, Nanchang University, 999 XuFu Road, Nanchang 330031, China
| | - Weiran Yang
- School of Chemistry and Chemical Engineering, Nanchang University, 999 XuFu Road, Nanchang 330031, China
| | - Jing Zheng
- School of Chemistry and Chemical Engineering, Nanchang University, 999 XuFu Road, Nanchang 330031, China
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Ventura ON, Segovia M, Vega-Teijido M, Katz A, Kieninger M, Tasinato N, Salta Z. Correcting the Experimental Enthalpies of Formation of Some Members of the Biologically Significant Sulfenic Acids Family. J Phys Chem A 2022; 126:6091-6109. [PMID: 36044372 DOI: 10.1021/acs.jpca.2c04235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sulfenic acids are important intermediates in the oxidation of cysteine thiol groups in proteins by reactive oxygen species. The mechanism is influenced heavily by the presence of polar groups, other thiol groups, and solvent, all of which determines the need to compute precisely the energies involved in the process. Surprisingly, very scarce experimental information exists about a very basic property of sulfenic acids, the enthalpies of formation. In this Article, we use high level quantum chemical methods to derive the enthalpy of formation at 298.15 K of methane-, ethene-, ethyne-, and benzenesulfenic acids, the only ones for which some experimental information exists. The methods employed were tested against well-known experimental data of related species and extensive CCSD(T) calculations. Our best results consistently point out to a much lower enthalpy of formation of methanesulfenic acid, CH3SOH (ΔfH0(298.15K) = -35.1 ± 0.4 kcal mol-1), than the one reported in the NIST thermochemical data tables. The enthalpies of formation derived for ethynesulfenic acid, HC≡CSOH, +32.9 ± 1.0 kcal/mol, and benzenesulfenic acid, C6H5SOH, -2.6 ± 0.6 kcal mol-1, also differ markedly from the experimental values, while the enthalpy of formation of ethenesulfenic acid CH2CHSOH, not available experimentally, was calculated as -11.2 ± 0.7 kcal mol-1.
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Affiliation(s)
- Oscar N Ventura
- Computational Chemistry and Biology Group, CCBG, DETEMA, Facultad de Química, Universidad de la República, 11400 Montevideo, Uruguay
| | - Marc Segovia
- Computational Chemistry and Biology Group, CCBG, DETEMA, Facultad de Química, Universidad de la República, 11400 Montevideo, Uruguay
| | - Mauricio Vega-Teijido
- Computational Chemistry and Biology Group, CCBG, DETEMA, Facultad de Química, Universidad de la República, 11400 Montevideo, Uruguay
| | - Aline Katz
- Computational Chemistry and Biology Group, CCBG, DETEMA, Facultad de Química, Universidad de la República, 11400 Montevideo, Uruguay
| | - Martina Kieninger
- Computational Chemistry and Biology Group, CCBG, DETEMA, Facultad de Química, Universidad de la República, 11400 Montevideo, Uruguay
| | - Nicola Tasinato
- SMART Lab, Scuola Normale Superiore, piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Zoi Salta
- SMART Lab, Scuola Normale Superiore, piazza dei Cavalieri 7, 56126 Pisa, Italy
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5
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Rana MM, Natale G, Siegler HDLH. A Greener Route for Smart PNIPAm Microgel Synthesis Using a Bio-Based Synthesis-Solvent. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6
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Illés Á, Rózsa ZB, Thangaraj R, Décsiné Gombos E, Dóbé S, Giri BR, Szőri M. An experimental and theoretical kinetic study of the reactions of hydroxyl radicals with tetrahydrofuran and two deuterated tetrahydrofurans. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Rajakumar B, Arathala P, Muthiah B. Thermal Decomposition of 2-Methyltetrahydrofuran behind Reflected Shock Waves over the Temperature Range of 1179-1361 K. J Phys Chem A 2021; 125:5406-5422. [PMID: 34128665 DOI: 10.1021/acs.jpca.0c11490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The thermal unimolecular decomposition of 2-methyltetrahydrofuran (2-MTHF) was studied behind reflected shock waves in a single-pulse shock tube over the temperature range of 1179-1361 K and pressure range of 9-17 atm. Methane, ethylene, ethane, 1,3-butadiene, propylene, acetaldehyde, and acetylene were identified as products in the decomposition of 2-MTHF. A reaction scheme was proposed to explain the mechanism for the observed products. The experimentally determined rate coefficients were best fit to an Arrhenius expression for the overall decomposition and is represented as ktotalexp(1179-1361 K) = (3.23 ± 0.59) × 1011 s-1 exp(-51.3 ± 1.4 kcal mol-1/RT). Quantum chemistry methods were used to calculate the energetics and kinetics of various possible unimolecular dissociation pathways involved in the thermal decomposition of 2-MTHF. The initial decomposition of 2-MTHF occurs predominantly via ring-methyl (C-CH3) single bond fission, leading to the formation of tetrahydrofuran (C4H7O) radical, and methyl radical was found to be the major reaction compared to all the possible initial bond fission, ring opening, and molecular elimination channels. The temperature-dependent rate coefficients for the unimolecular dissociation of 2-MTHF were calculated using the RRKM (Rice-Ramsperger-Kassel-Marcus) theory in combination with the CCSD(T)/cc-pVTZ//B3LYP/cc-pVTZ level of electronic structure calculations over the temperature range of 800-1500 K. The computed high-pressure limiting rate coefficients for the initial decomposition of 2-MTHF through C-CH3 single bond fission channel were found to be ∼2 times higher in the temperatures between 800 and 900 K, and above this temperature, they agree well with the values reported in the literature.
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Affiliation(s)
- Balla Rajakumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Parandaman Arathala
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Balaganesh Muthiah
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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8
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Demireva M, Au K, Sheps L. Direct time-resolved detection and quantification of key reactive intermediates in diethyl ether oxidation at T = 450-600 K. Phys Chem Chem Phys 2020; 22:24649-24661. [PMID: 33099590 DOI: 10.1039/d0cp03861j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-pressure multiplexed photoionization mass spectrometry (MPIMS) with tunable vacuum ultraviolet (VUV) ionization radiation from the Lawrence Berkeley Labs Advanced Light Source is used to investigate the oxidation of diethyl ether (DEE). Kinetics and photoionization (PI) spectra are simultaneously measured for the species formed. Several stable products from DEE oxidation are identified and quantified using reference PI cross-sections. In addition, we directly detect and quantify three key chemical intermediates: peroxy (ROO˙), hydroperoxyalkyl peroxy (˙OOQOOH), and ketohydroperoxide (HOOP[double bond, length as m-dash]O, KHP). These intermediates undergo dissociative ionization (DI) into smaller fragments, making their identification by mass spectrometry challenging. With the aid of quantum chemical calculations, we identify the DI channels of these key chemical species and quantify their time-resolved concentrations from the overall carbon atom balance at T = 450 K and P = 7500 torr. This allows the determination of the absolute PI cross-sections of ROO˙, ˙OOQOOH, and KHP into each DI channel directly from experiment. The PI cross-sections in turn enable the quantification of ROO˙, ˙OOQOOH, and KHP from DEE oxidation over a range of experimental conditions that reveal the effects of pressure, O2 concentration, and temperature on the competition among radical decomposition and second O2 addition pathways.
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Affiliation(s)
- Maria Demireva
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA.
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9
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Jouzdani S, Zheng X, Zhou A, Akih‐Kumgeh B. Shock tube investigation of methyl tert butyl ether and methyl tetrahydrofuran high‐temperature kinetics. INT J CHEM KINET 2019. [DOI: 10.1002/kin.21314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shirin Jouzdani
- Department of Mechanical and Aerospace EngineeringSyracuse UniversitySyracuse New York
| | - Xuan Zheng
- Department of Mechanical and Aerospace EngineeringSyracuse UniversitySyracuse New York
| | - Apeng Zhou
- Department of Mechanical and Aerospace EngineeringSyracuse UniversitySyracuse New York
| | - Ben Akih‐Kumgeh
- Department of Mechanical and Aerospace EngineeringSyracuse UniversitySyracuse New York
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10
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Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels. ENERGIES 2018. [DOI: 10.3390/en11030512] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Würmel J, Simmie JM. H-Atom Abstraction Reactions by Ground-State Ozone from Saturated Oxygenates. J Phys Chem A 2017; 121:8053-8060. [DOI: 10.1021/acs.jpca.7b07760] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Würmel
- Galway Mayo Institute of Technology, Galway H91 T8NW, Ireland
| | - J. M. Simmie
- School
of Chemistry, National University of Ireland, Galway H91 TK33, Ireland
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12
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Hudzik JM, Bozzelli JW. Reaction Paths and Chemical Activation Reactions of 2-Methyl-5-Furanyl Radical with 3O2. J Phys Chem A 2017; 121:7309-7323. [DOI: 10.1021/acs.jpca.7b06650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason M. Hudzik
- Chemistry, Chemical Engineering
and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Joseph W. Bozzelli
- Chemistry, Chemical Engineering
and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
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13
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Ausmeel S, Andersen C, Nielsen OJ, Østerstrøm FF, Johnson MS, Nilsson EJK. Reactions of Three Lactones with Cl, OD, and O 3: Atmospheric Impact and Trends in Furan Reactivity. J Phys Chem A 2017; 121:4123-4131. [PMID: 28452481 DOI: 10.1021/acs.jpca.7b02325] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lactones, cyclic esters of hydroxycarboxylic acids, are interesting biofuel candidates as they can be made from cellulosic biomass and have favorable physical and chemical properties for distribution and use. The reactions of γ-valerolactone (GVL), γ-crotonolactone (2(5H)-F), and α-methyl-γ-crotonolactone (3M-2(5H)-F) with Cl, OD, and O3 were investigated in a static chamber at 700 Torr and 298 ± 2 K. The relative rate method was used to determine kGVL+Cl = (4.56 ± 0.51) × 10-11, kGVL+OD = (2.94 ± 0.41) × 10-11, k2(5H)-F+Cl = (2.94 ± 0.41) × 10-11, k2(5H)-F+OD = (4.06 ± 0.073) × 10-12, k3M-2(5H)-F+Cl = (16.1 ± 1.8) × 10-11, and k3M-2(5H)-F+OD = (12.6 ± 0.52) × 10-12, all rate coefficients in units of cm3 molecule-1 s-1. An absolute rate method was used to determine k2(5H)-F+O3 = (6.73 ± 0.18) × 10-20 and k3M-2(5H)-F+O3 = (5.42 ± 1.23) × 10-19 in units of cm3 molecule-1 s-1. Products were identified for reactions of the lactones with Cl. In the presence of O2 the products are formic acid (HCOOH), formyl chloride (CHClO), and phosgene (CCl2O), and also maleic anhydride (C2H2(CO)2O) for 2(5H)-F. In addition both reactions produced a number of unidentified products that likely belong to molecules with the ring-structure intact. A review of literature data for reactions of other furans show that the reactivity of the lactones are generally lower compared to that of corresponding compounds without the carbonyl group.
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Affiliation(s)
- S Ausmeel
- Combustion Physics, Lund University , Box 118, SE-221 00 Lund, Sweden
| | - C Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - O J Nielsen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - F F Østerstrøm
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - M S Johnson
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - E J K Nilsson
- Combustion Physics, Lund University , Box 118, SE-221 00 Lund, Sweden
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14
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Parab PR, Sakade N, Sakai Y, Fernandes R, Heufer KA. A Computational Kinetics Study on the Intramolecular Hydrogen Shift Reactions of Alkylperoxy Radicals in 2-Methyltetrahydrofuran Oxidation. INT J CHEM KINET 2017. [DOI: 10.1002/kin.21087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Prajakta R. Parab
- Physico Chemical Fundamentals of Combustion; RWTH Aachen University; Templergraben 55 52056 Aachen Germany
| | | | | | - Ravi Fernandes
- Physikalish Technische Budesanstalt (PTB); 38116 Braunschweig Germany
| | - K. Alexander Heufer
- Physico Chemical Fundamentals of Combustion; RWTH Aachen University; Templergraben 55 52056 Aachen Germany
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15
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Direct and relative rate coefficients for the gas-phase reaction of OH radicals with 2-methyltetrahydrofuran at room temperature. REACTION KINETICS MECHANISMS AND CATALYSIS 2016. [DOI: 10.1007/s11144-016-1037-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Andersen C, Nielsen OJ, Østerstrøm FF, Ausmeel S, Nilsson EJK, Sulbaek Andersen MP. Atmospheric Chemistry of Tetrahydrofuran, 2-Methyltetrahydrofuran, and 2,5-Dimethyltetrahydrofuran: Kinetics of Reactions with Chlorine Atoms, OD Radicals, and Ozone. J Phys Chem A 2016; 120:7320-6. [PMID: 27556743 DOI: 10.1021/acs.jpca.6b06618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
FTIR smog chamber techniques were used to study the kinetics of the gas-phase reactions of Cl atoms, OD radicals, and O3 with the five-membered ring-structured compounds tetrahydrofuran (C4H8O, THF), 2-methyltetrahydrofuran (CH3C4H7O, 2-MTHF), 2,5-dimethyltetrahydrofuran ((CH3)2C4H5O, 2,5-DMTHF), and furan (C4H4O). The rate coefficients determined using relative rate methods were kTHF+Cl = (1.96 ± 0.24) × 10(-10), kTHF+OD = (1.81 ± 0.27) × 10(-11), kTHF+O3 = (6.41 ± 2.90) × 10(-21), k2-MTHF+Cl = (2.65 ± 0.43) × 10(-10), k2-MTHF+OD = (2.41 ± 0.51) × 10(-11), k2-MTHF+O3 = (1.87 ± 0.82) × 10(-20), k2,5-DMTHF+OD = (4.56 ± 0.68) × 10(-11), k2,5-DMTHF+Cl = (2.84 ± 0.34) × 10(-10), k2,5-DMTHF+O3 = (4.58 ± 2.18), kfuran+Cl = (2.39 ± 0.27) × 10(-10), and kfuran+O3 = (2.60 ± 0.31) × 10(-18) molecules cm(-3) s(-1). Rate coefficients of the reactions with ozone were also determined using the absolute rate method under pseudo-first-order conditions. OD radicals, in place of OH radicals, were produced from CD3ONO to avoid spectral overlap of isopropyl and methyl nitrite with the reactants. The kinetics of OD radical reactions are expected to resemble the kinetics of OH radical reactions, and the rate coefficients of the reactions with OD radicals were used to calculate the atmospheric lifetimes with respect to reactions with OH radicals. The lifetimes of THF, 2-MTHF, and 2,5-DMTHF are approximately 15, 12, and 6 h, respectively.
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Affiliation(s)
- Christina Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Ole John Nielsen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Freja F Østerstrøm
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Stina Ausmeel
- Combustion Physics, Lund University , Professorgatan 1 SE-221 00, Lund, Sweden
| | - Elna J K Nilsson
- Combustion Physics, Lund University , Professorgatan 1 SE-221 00, Lund, Sweden
| | - Mads P Sulbaek Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark.,Department of Chemistry and Biochemistry, California State University Northridge , 18111 Nordhoff Street, Northridge, California 91330-8262, United States
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17
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Zhou CW, Simmie JM, Pitz WJ, Curran HJ. Toward the Development of a Fundamentally Based Chemical Model for Cyclopentanone: High-Pressure-Limit Rate Constants for H Atom Abstraction and Fuel Radical Decomposition. J Phys Chem A 2016; 120:7037-44. [PMID: 27558073 DOI: 10.1021/acs.jpca.6b03994] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Theoretical aspects of the development of a chemical kinetic model for the pyrolysis and combustion of a cyclic ketone, cyclopentanone, are considered. Calculated thermodynamic and kinetic data are presented for the first time for the principal species including 2- and 3-oxo-cyclopentyl radicals, which are in reasonable agreement with the literature. These radicals can be formed via H atom abstraction reactions by Ḣ and Ö atoms and ȮH, HȮ2, and ĊH3 radicals, the rate constants of which have been calculated. Abstraction from the β-hydrogen atom is the dominant process when ȮH is involved, but the reverse holds true for HȮ2 radicals. The subsequent β-scission of the radicals formed is also determined, and it is shown that recent tunable VUV photoionization mass spectrometry experiments can be interpreted in this light. The bulk of the calculations used the composite model chemistry G4, which was benchmarked in the simplest case with a coupled cluster treatment, CCSD(T), in the complete basis set limit.
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Affiliation(s)
- Chong-Wen Zhou
- School of Chemistry & Combustion Chemistry Centre, National University of Ireland Galway , Galway H91 TK33, Ireland
| | - John M Simmie
- School of Chemistry & Combustion Chemistry Centre, National University of Ireland Galway , Galway H91 TK33, Ireland
| | - William J Pitz
- Lawrence Livermore National Laboratory , Livermore, California 94550, United States
| | - Henry J Curran
- School of Chemistry & Combustion Chemistry Centre, National University of Ireland Galway , Galway H91 TK33, Ireland
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18
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Antonov IO, Zádor J, Rotavera B, Papajak E, Osborn DL, Taatjes CA, Sheps L. Pressure-Dependent Competition among Reaction Pathways from First- and Second-O2 Additions in the Low-Temperature Oxidation of Tetrahydrofuran. J Phys Chem A 2016; 120:6582-95. [DOI: 10.1021/acs.jpca.6b05411] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ivan O. Antonov
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Judit Zádor
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Brandon Rotavera
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Ewa Papajak
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - David L. Osborn
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Craig A. Taatjes
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Leonid Sheps
- Combustion
Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
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19
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High-Temperature Study of 2-Methyl Furan and 2-Methyl Tetrahydrofuran Combustion. INT J CHEM KINET 2016. [DOI: 10.1002/kin.21008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Jackson MA, Appell M, Blackburn JA. Hydrodeoxygenation of Fructose to 2,5-Dimethyltetrahydrofuran Using a Sulfur Poisoned Pt/C Catalyst. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00766] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael A. Jackson
- Renewable Product Technology Unit and ‡Bacterial Foodborne
Pathogens and
Mycology Unit, , National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University Street, Peoria, Illinois 61604, United States
| | - Michael Appell
- Renewable Product Technology Unit and ‡Bacterial Foodborne
Pathogens and
Mycology Unit, , National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University Street, Peoria, Illinois 61604, United States
| | - Judith A. Blackburn
- Renewable Product Technology Unit and ‡Bacterial Foodborne
Pathogens and
Mycology Unit, , National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University Street, Peoria, Illinois 61604, United States
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Hayes CJ, Burgess DR, Manion JA. Combustion Pathways of Biofuel Model Compounds. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2015. [DOI: 10.1016/bs.apoc.2015.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Woźnica M, Chaoui N, Taabache S, Blechert S. THF: An Efficient Electron Donor in Continuous Flow Radical Cyclization Photocatalyzed by Graphitic Carbon Nitride. Chemistry 2014; 20:14624-8. [DOI: 10.1002/chem.201404440] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Indexed: 11/12/2022]
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Sengupta A, Raghavachari K. Prediction of Accurate Thermochemistry of Medium and Large Sized Radicals Using Connectivity-Based Hierarchy (CBH). J Chem Theory Comput 2014; 10:4342-50. [DOI: 10.1021/ct500484f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arkajyoti Sengupta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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24
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Wurmel J, Simmie JM. Thermochemistry and Kinetics of Angelica and Cognate Lactones. J Phys Chem A 2014; 118:4172-83. [DOI: 10.1021/jp502310v] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Judith Wurmel
- School of Chemistry, National University of Ireland, Galway, Ireland
| | - John M. Simmie
- School of Chemistry, National University of Ireland, Galway, Ireland
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Auzmendi-Murua I, Bozzelli JW. Thermochemical Properties and Bond Dissociation Enthalpies of 3- to 5-Member Ring Cyclic Ether Hydroperoxides, Alcohols, and Peroxy Radicals: Cyclic Ether Radical + 3O2 Reaction Thermochemistry. J Phys Chem A 2014; 118:3147-67. [DOI: 10.1021/jp412590g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Itsaso Auzmendi-Murua
- Department of Chemistry and
Chemical Engineering, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Joseph W. Bozzelli
- Department of Chemistry and
Chemical Engineering, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
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26
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Simmie JM, Somers KP, Yasunaga K, Curran HJ. A Quantum Chemical Study of the Abnormal Reactivity of 2-Methoxyfuran. INT J CHEM KINET 2013. [DOI: 10.1002/kin.20793] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- John M. Simmie
- Combustion Chemistry Centre; National University of Ireland; Galway Ireland
| | - Kieran P. Somers
- Combustion Chemistry Centre; National University of Ireland; Galway Ireland
| | - Kenji Yasunaga
- Department of Applied Chemistry; National Defense Academy; Yokosuka Japan
| | - Henry J. Curran
- Combustion Chemistry Centre; National University of Ireland; Galway Ireland
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Chakravarty HK, Fernandes RX. Reaction Kinetics of Hydrogen Abstraction Reactions by Hydroperoxyl Radical from 2-Methyltetrahydrofuran and 2,5-Dimethyltetrahydrofuran. J Phys Chem A 2013; 117:5028-41. [DOI: 10.1021/jp402801c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Harish Kumar Chakravarty
- Physico Chemical Fundamentals of Combustion, RWTH Aachen University, Templergraben 55, D-52056 Aachen, Germany
| | - Ravi X. Fernandes
- Physico Chemical Fundamentals of Combustion, RWTH Aachen University, Templergraben 55, D-52056 Aachen, Germany
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig,
Germany
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28
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Altarawneh M, Dlugogorski BZ. A mechanistic and kinetic study on the decomposition of morpholine. J Phys Chem A 2012; 116:7703-11. [PMID: 22746995 DOI: 10.1021/jp303463j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The combustion chemistry of morpholine (C(4)H(8)ONH) has been experimentally investigated recently as a representative model compound for O- and N-containing structural entities in biomass. Detailed profiles of species indicate the self-breakdown reactions prevailing over oxidative decomposition reactions. In this study, we derive thermodynamic and kinetic properties pertinent to all plausible reactions involved in the self-decomposition of morpholine and its derived morphyl radicals as a crucial task in the development of comprehensive combustion mechanism. Potential energy surfaces have been mapped out for the decomposition of morpholine and the three morphyl radicals. RRKM-based calculations predict the self-decomposition of morpholine to be dominated by 1,3-intramolecular hydrogen shift into the NH group at all temperatures and pressures. Self-decomposition of morpholine is shown to provide pathways for the formation of the experimentally detected products such as ethenol and ethenamine. Energetic requirements of all self-decomposition of morphyl radicals are predicted to be of modest values (i.e., 20-40 kcal/mol) which in turn support the occurrence of breaking-down reactions into two-heavy-atom species and the generation of doubly unsaturated four-heavy-atom segments. Calculated thermochemical parameters (in terms of standard enthalpies of formation, standard entropies, and heat capacities) and kinetic parameters (in terms of reaction rate constants at a high pressure limit) should be instrumental in building a robust kinetic model for the oxidation of morpholine.
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Affiliation(s)
- Mohammednoor Altarawneh
- Priority Research Centre for Energy, Faculty of Engineering & Built Environment, The University of Newcastle, Callaghan NSW 2308, Australia.
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