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Zhang P, Tang X, Zhang C, Gao D, Wang X, Wang Y, Guo W, Zou R, Han Y, Lin X, Dong X, Li K, Zheng H, Mao HK. Pressure-Induced Hydrogen Transfer in 2-Butyne via a Double CH···π Aromatic Transition State. J Phys Chem Lett 2022; 13:4170-4175. [PMID: 35507771 DOI: 10.1021/acs.jpclett.2c00877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hydrogen transfer (H-transfer) is an important elementary reaction in chemistry and bioscience. It is often facilitated by the hydrogen bonds between the H-donor and acceptor. Here, at room temperature and high pressure, we found that solid 2-butyne experienced a concerted two-in-two-out intermolecular CH···π H-transfer, which initiated the subsequent polymerization. Such double H-transfer goes through an aromatic Hückel six-membered ring intermediate state via intermolecular CH···π interactions enhanced by external pressure. Our work shows that H-transfer can occur via the CH···π route in appropriate conformations under high pressure, which gives important insights into the H-transfer in solid-state hydrocarbons.
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Affiliation(s)
- Peijie Zhang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xingyu Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Chunfang Zhang
- College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P. R. China
| | - Dexiang Gao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xuan Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Yajie Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Wenhan Guo
- Great Bay University, Dongguan 523000, P. R. China
| | - Ruqiang Zou
- School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Yehua Han
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum─Beijing, Beijing 102249, P. R. China
| | - Xiaohuan Lin
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xiao Dong
- Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, P. R. China
| | - Kuo Li
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Haiyan Zheng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
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2
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Pham TV, Trang HTT. A theoretical study on mechanism and kinetics of the C2H3 + C2H3 recombination and the isomerization and dissociation of butadiene. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Wang BY, Zeng P, He R, Li F, Yang ZY, Xia ZX, Liang J, Wang QD. Single-Pulse Shock Tube Experimental and Kinetic Modeling Study on Pyrolysis of a Direct Coal Liquefaction-Derived Jet Fuel and Its Blends with the Traditional RP-3 Jet Fuel. ACS OMEGA 2021; 6:18442-18450. [PMID: 34308075 PMCID: PMC8296605 DOI: 10.1021/acsomega.1c02530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
A basic understanding of the high-temperature pyrolysis process of jet fuels is not only valuable for the development of combustion kinetic models but also critical to the design of advanced aeroengines. The development and utilization of alternative jet fuels are of crucial importance in both military and civil aviation. A direct coal liquefaction (DCL) derived liquid fuel is an important alternative jet fuel, yet fundamental pyrolysis studies on this category of jet fuels are lacking. In the present work, high-temperature pyrolysis studies on a DCL-derived jet fuel and its blend with the traditional RP-3 jet fuel are carried out by using a single-pulse shock tube (SPST) facility. The SPST experiments are performed at averaged pressures of 5.0 and 10.0 bar in the temperature range around 900-1800 K for 0.05% fuel diluted by argon. Major intermediates are obtained and quantified using gas chromatography analysis. A flame-ionization detector and a thermal conductivity detector are used for species identification and quantification. Ethylene is the most abundant product for the two fuels in the pyrolysis process. Other important intermediates such as methane, ethane, propyne, acetylene, and 1,3-butadiene are also identified and quantified. The pyrolysis product distributions of the pure RP-3 jet fuel are also performed. Kinetic modeling is performed by using a modern detailed mechanism for the DCL-derived jet fuel and its blends with the RP-3 jet fuel. Rate-of-production analysis and sensitivity analysis are conducted to compare the differences of the chemical kinetics of the pyrolysis process of the two jet fuels. The present work is not only valuable for the validation and development of detailed combustion mechanisms for alternative jet fuels but also improves our understanding of the pyrolysis characteristics of alternative jet fuels.
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Affiliation(s)
- Bi-Yao Wang
- Aviation
Fuel and Chemical Airworthiness Certification Centre of CAAC, Chengdu 610041, People’s Republic of China
| | - Ping Zeng
- Aviation
Fuel and Chemical Airworthiness Certification Centre of CAAC, Chengdu 610041, People’s Republic of China
| | - Ruining He
- School
of Environmental and Safety Engineering, North University of China, Taiyuan 030051, People’s Republic of China
| | - Fei Li
- School
of Environmental and Safety Engineering, North University of China, Taiyuan 030051, People’s Republic of China
| | - Zhi-Yuan Yang
- Aviation
Fuel and Chemical Airworthiness Certification Centre of CAAC, Chengdu 610041, People’s Republic of China
| | - Zu-Xi Xia
- Aviation
Fuel and Chemical Airworthiness Certification Centre of CAAC, Chengdu 610041, People’s Republic of China
| | - Jinhu Liang
- School
of Environmental and Safety Engineering, North University of China, Taiyuan 030051, People’s Republic of China
| | - Quan-De Wang
- Jiangsu
Key Laboratory of Coal-Based Greenhouse Gas Control and Utilization,
Low Carbon Energy Institute and School of Chemical Engineering, China University of Mining and Technology, Xuzhou 221008, People’s Republic of China
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4
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He C, Thomas AM, Galimova GR, Mebel AM, Kaiser RI. Gas-Phase Formation of 1-Methylcyclopropene and 3-Methylcyclopropene via the Reaction of the Methylidyne Radical (CH; X 2Π) with Propylene (CH 3CHCH 2; X 1A'). J Phys Chem A 2019; 123:10543-10555. [PMID: 31718184 DOI: 10.1021/acs.jpca.9b09815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The crossed molecular beam reactions of the methylidyne radical (CH; X2Π) with propylene (CH3CHCH2; X1A') along with (partially) substituted reactants were conducted at collision energies of 19.3 kJ mol-1. Combining our experimental data with ab initio electronic structure and statistical calculations, the methylidyne radical is revealed to add barrierlessly to the carbon-carbon double bond of propylene reactant resulting in a cyclic doublet C4H7 intermediate with a lifetime longer than its rotation period. These adducts undergo a nonstatistical unimolecular decomposition via atomic hydrogen loss through tight exit transition states forming the cyclic products 1-methylcyclopropene and 3-methylcyclopropene with overall reaction exoergicities of 168 ± 25 kJ mol-1. These C4H6 isomers are predicted to exist even in low-temperature environments such as cold molecular clouds like TMC-1, since the reaction is barrierless and exoergic, all transition states are below the energy of the separated reactants, and both the methylidyne radical (CH; X2Π) and propylene reactant were detected in cold molecular clouds such as TMC-1.
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Affiliation(s)
- Chao He
- Department of Chemistry , University of Hawai'i at Manoa , Honolulu , Hawaii 96822 , United States
| | - Aaron M Thomas
- Department of Chemistry , University of Hawai'i at Manoa , Honolulu , Hawaii 96822 , United States
| | - Galiya R Galimova
- Department of Chemistry and Biochemistry , Florida International University , Miami , Florida 33199 , United States.,Samara National Research University , Samara 443086 , Russia
| | - Alexander M Mebel
- Department of Chemistry and Biochemistry , Florida International University , Miami , Florida 33199 , United States
| | - Ralf I Kaiser
- Department of Chemistry , University of Hawai'i at Manoa , Honolulu , Hawaii 96822 , United States
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5
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Fuller ME, Skowron M, Tranter RS, Goldsmith CF. A modular, multi-diagnostic, automated shock tube for gas-phase chemistry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:064104. [PMID: 31255004 DOI: 10.1063/1.5095077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/01/2019] [Indexed: 06/09/2023]
Abstract
A new shock tube has been constructed for investigations of high-temperature chemical kinetics with an emphasis on combustion chemistry. This instrument includes a diaphragmless driver and electrical control of valving. A diaphragmless design significantly improves repeatability of experimental conditions vs the use of diaphragms and leads to an approximate order of magnitude reduction in turnaround time between experiments. Electrical control of valves, combined with diaphragmless operation, also enables remote and automated operation of the shock tube. The design allows for both incident and reflected shock experiments with multiple diagnostics. The performance of the shock tube is demonstrated by reproducing previous literature measurements on the unimolecular decomposition of isobutyl nitrite and cyclohexene.
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Affiliation(s)
- Mark E Fuller
- School of Engineering, Brown University, 184 Hope Street, Providence, Rhode Island 02912, USA
| | - Mal Skowron
- School of Engineering, Brown University, 184 Hope Street, Providence, Rhode Island 02912, USA
| | - Robert S Tranter
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - C Franklin Goldsmith
- School of Engineering, Brown University, 184 Hope Street, Providence, Rhode Island 02912, USA
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6
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Tranter RS, Lynch PT, Randazzo JB, Lockhart JPA, Chen X, Goldsmith CF. High temperature pyrolysis of 2-methyl furan. Phys Chem Chem Phys 2018; 20:10826-10837. [DOI: 10.1039/c7cp07775k] [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
Experiments and theory reveal the complex dissociation of 2-methylfuran and the surprising importance of H-atom loss.
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Affiliation(s)
- R. S. Tranter
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - P. T. Lynch
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - J. B. Randazzo
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - J. P. A. Lockhart
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - X. Chen
- Department of Chemistry
- Brown University
- Providence
- USA
| | - C. F. Goldsmith
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
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7
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Matsugi A, Shiina H. Thermal Decomposition of Nitromethane and Reaction between CH3 and NO2. J Phys Chem A 2017; 121:4218-4224. [DOI: 10.1021/acs.jpca.7b03715] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akira Matsugi
- National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
| | - Hiroumi Shiina
- National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
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