1
|
Tao N, Liu C, Xing H, Lu S, Lo S, Zhang H. Experimental and Density Functional Theory Studies on 1,1,1,4,4,4-Hexafluoro-2-Butene Pyrolysis. Molecules 2020; 25:molecules25173799. [PMID: 32825552 PMCID: PMC7503914 DOI: 10.3390/molecules25173799] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/11/2020] [Accepted: 08/16/2020] [Indexed: 11/16/2022] Open
Abstract
A series of thermal decomposition experiments were conducted over a temperature range of 873-1073 K to evaluate the thermal stability of 1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz(Z)) and the production of hydrogen fluoride (HF). According to the detected products and experimental phenomena, the thermal decomposition of HFO-1336mzz(Z) could be divided into three stages. Our experimental results showed that HF concentration gradually increased with the elevation of thermal decomposition temperature. In this present study, a total of seven chemical reaction pathways of HFO-1336mzz(Z) pyrolysis were proposed to explore the generated mechanism on products through density functional theory (DFT) with M06-2X/6-311++(d,p) level theory. The thermal decomposition mechanism of pure HFO-1336mzz(Z) was discussed and the possible formation pathways of HF and other main products were proposed.
Collapse
Affiliation(s)
- Neng Tao
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China; (N.T.); (C.L.); (H.X.); (S.L.)
- Department of Civil and Architectural Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong;
| | - Changcheng Liu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China; (N.T.); (C.L.); (H.X.); (S.L.)
| | - Haoran Xing
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China; (N.T.); (C.L.); (H.X.); (S.L.)
| | - Song Lu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China; (N.T.); (C.L.); (H.X.); (S.L.)
| | - Siuming Lo
- Department of Civil and Architectural Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong;
| | - Heping Zhang
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, China; (N.T.); (C.L.); (H.X.); (S.L.)
- Correspondence: ; Tel.: +86-551-63601665
| |
Collapse
|
2
|
Saghafi H, Vahedpour M, Douroudgari H. Complete degradation of glyoxal by NO radicals through two steps: The first at high-temperatures and the second at low-temperatures. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
3
|
Jabeen S, Zeng Z, Altarawneh M, Gao X, Saeed A, Dlugogorski BZ. Thermal decomposition of model compound of algal biomass. INT J CHEM KINET 2019. [DOI: 10.1002/kin.21301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sidra Jabeen
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
| | - Zhe Zeng
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
| | - Mohammednoor Altarawneh
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
- Department of Chemical EngineeringAl‐Hussein Bin Talal University Ma'an Jordan
| | - Xiangpeng Gao
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
| | - Anam Saeed
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
| | - Bogdan Z. Dlugogorski
- Discipline of Chemistry and PhysicsCollege of ScienceHealthEngineering and EducationMurdoch University Murdoch Australia
| |
Collapse
|
4
|
Dual level direct dynamics study of gas phase reaction of CF3CH2OCH2CF3 with Cl atoms and atmospheric degradation of CF3CH2OCH2CF3. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.02.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
5
|
Tropospheric degradation of HFE-7500[ n -C 3 F 7 CF(OCH 2 CH 3 )CF(CF 3 ) 2 ] initiated by OH radicals and Fate of alkoxy radical [ n -C 3 F 7 CF(OCH(O )CH 3 )CF(CF 3 ) 2 ]: A DFT investigation. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
6
|
Parandaman A, Rajakumar B. Addition and abstraction kinetics of H atom with propylene and isobutylene between 200 and 2500 K: A DFT study. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Priya AM, Lakshmipathi S. DFT study on abstraction reaction mechanism of oh radical with 2-methoxyphenol. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3713] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
8
|
Elakiya C, Shankar R, Vijayakumar S, Kolandaivel P. A theoretical study on the reaction mechanism and kinetics of allyl alcohol (CH2 = CHCH2OH) with ozone (O3) in the atmosphere. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1292012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- C. Elakiya
- Department of Physics, Bharathiar University, Coimbatore, India
| | - R. Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
| | - P. Kolandaivel
- Department of Physics, Bharathiar University, Coimbatore, India
| |
Collapse
|
9
|
Lily M, Baidya B, Chandra AK. Theoretical studies on atmospheric chemistry of HFE-245mc and perfluoro-ethyl formate: Reaction with OH radicals, atmospheric fate of alkoxy radical and global warming potential. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.12.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Thangamani D, Shankar R, Vijayakumar S, Kolandaivel P. Mechanism and kinetics of the atmospheric degradation of 2-formylcinnamaldehyde with O3 and hydroxyl OH radicals – a theoretical study. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1214293] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- D. Thangamani
- Defence Research & Development Organization, Bharathiar University Center for Life Sciences, Coimbatore, India
| | - R. Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
| | - P. Kolandaivel
- Department of Physics, Bharathiar University, Coimbatore, India
| |
Collapse
|
11
|
Theoretical investigation on the kinetics and thermochemisty of H-atom abstraction reactions of 2-chloroethyl methyl ether (CH3OCH2CH2Cl) with OH radical at 298 K. Struct Chem 2016. [DOI: 10.1007/s11224-016-0771-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
12
|
Mishra BK, Gour NK, Bhattacharjee D, Deka RC. Atmospheric chemistry of HFE-7000 (i-C3F7OCH3) and isofluoro-propyl formate (i-C3F7OC(O)H): reactions with OH radicals, atmospheric lifetime and fate of alkoxy radical (i-C3F7OCH2O•) – a DFT study. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1108471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
13
|
GOUR NANDKISHOR, MISHRA BHUPESHKUMAR, SINGH HARIJI. Theoretical study on mechanism, kinetics, and thermochemistry of the gas phase reaction of 2,2,2-trifluoroethyl butyrate with OH radicals at 298 K. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0860-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
Theoretical studies on atmospheric chemistry of (CF3)2C(OH)CH3: Kinetics, mechanism and thermochemistry of gas phase reactions with OH radicals. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
15
|
Bhattacharjee D, Mishra BK, Deka RC. Theoretical insight on atmospheric chemistry of HFE-365mcf3: reactions with OH radicals, atmospheric lifetime, and fate of alkoxy radicals (CF3CF2CH(O•)OCH3/CF3CF2CH2OCH2O•). J Mol Model 2015; 21:69. [DOI: 10.1007/s00894-015-2629-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 02/15/2015] [Indexed: 11/28/2022]
|
16
|
Lily M, Chandra AK. Theoretical investigation on kinetics and thermochemistry of reaction of CHF 2CF 2OCH 2CF 3with OH radicals and global warming potentials. Mol Phys 2015. [DOI: 10.1080/00268976.2014.955541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Theoretical studies on kinetics, mechanism and thermochemistry of gas-phase reactions of CF3CHFCF2OCF3 with OH radicals and Cl atoms and fate of alkoxy radical at 298K. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Mishra BK. Theoretical investigation on the atmospheric fate of CF3C(O)OCH 2O radical: alpha-ester rearrangement vs oxidation at 298 K. J Mol Model 2014; 20:2444. [PMID: 25208556 DOI: 10.1007/s00894-014-2444-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/26/2014] [Indexed: 11/25/2022]
Abstract
A theoretical study on the mechanism of the thermal decomposition of CF(3)C(O)OCH(2)O radical is presented for the first time. Geometry optimization and frequency calculations were performed at the MPWB1K/6-31 + G(d, p) level of theory and energetic information further refined by calculating the energy of the species using G2(MP2) theory. Three plausible decomposition pathways including α-ester rearrangement, reaction with O(2) and thermal decomposition (C-O bond scission) were considered in detail. Our results reveal that reaction with O(2) is the dominant path for the decomposition of CF(3)C(O)OCH(2)O radical in the atmosphere, involving the lowest energy barrier, which is in accord with experimental findings. Our theoretical results also suggest that α-ester rearrangement leading to the formation of trifluoroacetic acid TFA makes a negligible contribution to decomposition of the title alkoxy radical. The thermal rate constants for the above decomposition pathways were evaluated using canonical transition state theory (CTST) at 298 K.
Collapse
Affiliation(s)
- Bhupesh Kumar Mishra
- Department of Chemical Sciences, Tezpur University Tezpur, Tezpur, Assam, 784 028, India,
| |
Collapse
|
19
|
Theoretical study on the gas-phase reactions of ethyl butyrate with OH radicals at 298 K. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1255-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Mishra BK, Lily M, Chakrabartty AK, Bhattacharjee D, Deka RC, Chandra AK. Theoretical investigation of atmospheric chemistry of volatile anaesthetic sevoflurane: reactions with the OH radicals and atmospheric fate of the alkoxy radical (CF3)2CHOCHFO: thermal decomposition vs. oxidation. NEW J CHEM 2014. [DOI: 10.1039/c3nj01408h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction profile (kcal mol−1) for (CF3)2CHOCHFO radical at the M06-2X/6-311++G(d,p) level.
Collapse
Affiliation(s)
| | - Makroni Lily
- Department of Chemistry
- North-Eastern Hill University
- Shillong, India
| | | | | | | | - Asit K. Chandra
- Department of Chemistry
- North-Eastern Hill University
- Shillong, India
| |
Collapse
|