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Ma HZ, Canty AJ, O'Hair RAJ. Liberation of carbon monoxide from formic acid mediated by molybdenum oxyanions. Dalton Trans 2023; 52:15734-15746. [PMID: 37843527 DOI: 10.1039/d3dt01983g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Multistage mass spectrometry experiments, isotope labelling and DFT calculations were used to explore whether selective decarbonylation of formic acid could be mediated by molybdate anions [(MoO3)x(OH)]- (x = 1 and 2) via a formal catalytic cycle involving two steps. In step 1, both molybdate anions undergo gas-phase ion-molecule reactions (IMR) with formic acid to produce the coordinated formates [(MoO3)x(O2CH)]- and H2O. In step 2, both coordinated formates [(MoO3)x(O2CH)]- undergo decarbonylation under collision-induced dissociation (CID) conditions to reform the molybdate anions [(MoO3)x(OH)]- (x = 1 and 2), thus closing a formal catalytic cycle. In the case of [MoO3(O2CH)]- an additional decarboxylation channel also occurs to yield [MoO3(H)]-, which is unreactive towards formic acid. The reaction between [Mo18O3(18OH)]- and formic acid gives rise to [Mo18O3(O2CH)]- highlighting that ligand substitution occurs without 18O/16O exchange between the coordinated 18OH ligand and HC16O2H. The reaction between [(MoO3)x(OD)]- (x = 1 and 2) and DCO2H initially produces [(MoO3)x(OH)]- (x = 1 and 2), indicating that D/H exchange occurs. DFT calculations were carried out to investigate the reaction mechanisms and energetics associated with both steps of the formal catalytic cycle and to better understand the competition between decarbonylation and decarboxylation, which is crucial in developing a selective catalyst. The CO and CO2 loss channels from the monomolybdate anion [MoO3(O2CH)]- have similar barrier heights which is in agreement with experimental results where both fragmentation channels are observed. In contrast, the dimolybdate anion is more selective, since the decarbonylation pathway of [(MoO3)2(O2CH)]- is both kinetically and thermodynamically favoured, which agrees with experimental observations where the CO loss channel is solely observed.
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Affiliation(s)
- Howard Z Ma
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
| | - Allan J Canty
- School of Natural Sciences - Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania, 7001, Australia
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
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2
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Liu M, Dyson PJ. Direct conversion of lignin to functionalized diaryl ethers via oxidative cross-coupling. Nat Commun 2023; 14:2830. [PMID: 37217549 DOI: 10.1038/s41467-023-38534-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 05/03/2023] [Indexed: 05/24/2023] Open
Abstract
Efficient valorization of lignin, a sustainable source of functionalized aromatic products, would reduce dependence on fossil-derived feedstocks. Oxidative depolymerization is frequently applied to lignin to generate phenolic monomers. However, due to the instability of phenolic intermediates, repolymerization and dearylation reactions lead to low selectivity and product yields. Here, a highly efficient strategy to extract the aromatic monomers from lignin affording functionalized diaryl ethers using oxidative cross-coupling reactions is described, which overcomes the limitations of oxidative methods and affords high-value specialty chemicals. Reaction of phenylboronic acids with lignin converts the reactive phenolic intermediates into stable diaryl ether products in near-theoretical maximum yields (92% for beech lignin and 95% for poplar lignin based on the content of β-O-4 linkages). This strategy suppresses side reactions typically encountered in oxidative depolymerization reactions of lignin and provides a new approach for the direct transformation of lignin into valuable functionalized diaryl ethers, including key intermediates in pharmaceutical and natural product synthesis.
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Affiliation(s)
- Mingyang Liu
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Paul J Dyson
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
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3
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Ma HZ, Canty AJ, O'Hair RAJ. Near thermal, selective liberation of hydrogen from formic acid catalysed by copper hydride ate complexes. Dalton Trans 2023; 52:1574-1581. [PMID: 36656079 DOI: 10.1039/d2dt03764e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A near thermal two-step catalytic cycle for the selective release of hydrogen from formic acid by mononuclear cuprate anions was revealed using multistage mass spectrometry experiments, deuterium labelling and DFT calculations. In gas-phase ion-molecule reactions, mononuclear copper hydride anions [(L)Cu(H)]- (where L = H-, O2CH-, BH4- and CN-) were found to react with formic acid (HCO2H) to yield [(L)Cu(O2CH)]- and H2. The copper formate anions [(L)Cu(O2CH)]- can decarboxylate via collision-induced dissociation (CID) to reform the copper hydride [(L)Cu(H)]-, thereby closing the two-step catalytic cycle. Analogous labelling experiments with d1-formic acid (DCO2H) reveal that the decarboxylation process also occurs spontaneously. A kinetic study was carried out to provide further insights into the species involved in this reaction. Energetics from density functional theory (DFT) calculations show that the key decarboxylation step can occur without CID, thus in support of experimental observations.
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Affiliation(s)
- Howard Z Ma
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
| | - Allan J Canty
- School of Natural Sciences - Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
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Lowe B, Cardona AL, Salas J, Bodi A, Mayer PM, Burgos Paci MA. Probing the pyrolysis of ethyl formate in the dilute gas phase by synchrotron radiation and theory. JOURNAL OF MASS SPECTROMETRY : JMS 2023; 58:e4901. [PMID: 36691327 DOI: 10.1002/jms.4901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The thermal decomposition of the atmospheric constituent ethyl formate was studied by coupling flash pyrolysis with imaging photoelectron photoion coincidence (iPEPICO) spectroscopy using synchrotron vacuum ultraviolet (VUV) radiation at the Swiss Light Source (SLS). iPEPICO allows photoion mass-selected threshold photoelectron spectra (ms-TPES) to be obtained for pyrolysis products. By threshold photoionization and ion imaging, parent ions of neutral pyrolysis products and dissociative photoionization products could be distinguished, and multiple spectral carriers could be identified in several ms-TPES. The TPES and mass-selected TPES for ethyl formate are reported for the first time and appear to correspond to ionization of the lowest energy conformer having a cis (eclipsed) configuration of the O=C(H)-O-C(H2 )-CH3 and trans (staggered) configuration of the O=C(H)-O-C(H2 )-CH3 dihedral angles. We observed the following ethyl formate pyrolysis products: CH3 CH2 OH, CH3 CHO, C2 H6 , C2 H4 , HC(O)OH, CH2 O, CO2 , and CO, with HC(O)OH and C2 H4 pyrolyzing further, forming CO + H2 O and C2 H2 + H2 . The reaction paths and energetics leading to these products, together with the products of two homolytic bond cleavage reactions, CH3 CH2 O + CHO and CH3 CH2 + HC(O)O, were studied computationally at the M06-2X-GD3/aug-cc-pVTZ and SVECV-f12 levels of theory, complemented by further theoretical methods for comparison. The calculated reaction pathways were used to derive Arrhenius parameters for each reaction. The reaction rate constants and branching ratios are discussed in terms of the residence time and newly suggest carbon monoxide as a competitive primary fragmentation product at high temperatures.
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Affiliation(s)
- Bethany Lowe
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada
| | - Alejandro L Cardona
- INFIQC - CONICET, Departamento fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Juana Salas
- INFIQC - CONICET, Departamento fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Andras Bodi
- Laboratory for Synchrotron Radiation and Femtochemistry, Paul Scherrer Institute, Villigen, Switzerland
| | - Paul M Mayer
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada
| | - Maxi A Burgos Paci
- INFIQC - CONICET, Departamento fisicoquímica, Universidad Nacional de Córdoba, Córdoba, Argentina
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5
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Catalytic effects on decomposition of formic acid in the atmosphere – A kinetic and thermochemical investigation. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cao J, Zhou M, Wang Z. Theoretical studies on the acid-catalyzed decompositions of HCHO and HCOOH: Mechanism and thermochemistry. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rogers CO, Lockwood KS, Nguyen QLD, Labbe NJ. Diol isomer revealed as a source of methyl ketene from propionic acid unimolecular decomposition. INT J CHEM KINET 2021. [DOI: 10.1002/kin.21532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Cory O. Rogers
- Department of Mechanical Engineering University of Colorado Boulder Boulder Colorado USA
| | - Katherine S. Lockwood
- Department of Mechanical Engineering University of Colorado Boulder Boulder Colorado USA
| | - Quynh L. D. Nguyen
- JILA Department of Physics University of Colorado Boulder Boulder Colorado USA
- National Institute of Standards and Technology Boulder Colorado USA
| | - Nicole J. Labbe
- Department of Mechanical Engineering University of Colorado Boulder Boulder Colorado USA
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Fu Y, Wang L, Peng W, Fan Q, Li Q, Dong Y, Liu Y, Boczkaj G, Wang Z. Enabling simultaneous redox transformation of toxic chromium(VI) and arsenic(III) in aqueous media-A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126041. [PMID: 34229381 DOI: 10.1016/j.jhazmat.2021.126041] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 03/20/2021] [Accepted: 05/02/2021] [Indexed: 06/13/2023]
Abstract
Simultaneous conversion of most harmful As(III) and Cr(VI) to their less toxic counterparts is environmentally desirable and cost-effective. It has been confirmed that simultaneous oxidation of As(III) to As(V) and reduction of Cr(VI) to Cr(III) can occur via free radical or mediated electron transfer processes. While Cr(VI) is reduced by reacting with H•, eaq-, photoelectron directly or undergoing ligand exchange with H2O2 and SO32-, As(III) is oxidized by HO•, SO4•-, O2•-, and holes (h+) in free radical process. The ability to concentrate Cr and As species on heterogeneous interface and conductivity determining the co-conversion efficiency in mediated electron transfer process. Acidity has positive effect on these co-conversion, while mediated electron transfer process is not much affected by dissolved oxygen (O2). Organic compounds (e.g., oxalate, citrate and phenol) commonly favor Cr(VI) reduction and inhibit As(III) oxidation. To better understand the trends in the existing data and to identify the knowledge gaps, this review elaborates the complicated mechanisms for co-conversion of As(III) and Cr(VI) by various methods. Some challenges and prospects in this active field are also briefly discussed.
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Affiliation(s)
- Yu Fu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Lingli Wang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Wenya Peng
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Qingya Fan
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Qingchao Li
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Yongxia Dong
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Yunjiao Liu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Grzegorz Boczkaj
- Gdansk University of Technology, Faculty of Chemistry, Department of Chemical and Process Engineering, G. Narutowicza St. 11/12, 80-233 Gdansk, Poland; EkoTech Center, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233 Gdansk, Poland
| | - Zhaohui Wang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China; Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai 200241, China; Technology Innovation Center for Land Spatial Eco-Restoration in Metropolitan Area, Ministry of Natural Resources, 3663 N. Zhongshan Road, Shanghai 200062, China.
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The influence of the environment in chemical reactivity: the HCOOH formation from the H 2O + CO reaction. J Mol Model 2021; 27:264. [PMID: 34435261 DOI: 10.1007/s00894-021-04872-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/04/2021] [Indexed: 11/27/2022]
Abstract
The reaction between carbon monoxide and water was studied occurring in an aerosol medium rich in methanol. This environment is plausible for the primitive and prebiotic Earth atmosphere. The chemical environment is expressed in terms of dielectric constant (ε) and the chemical system was modeled employing the polarizable continuum model (PCM). The main results were acquired from calculations employing the M06-2X density functional for the electronic structure calculations and the canonical variational theory with small curvature tunneling for the chemical kinetic calculations. The rise of ε affects both the thermochemistry and the kinetics of the reaction, increasing the barrier height and decreasing the rate constant for the reaction occurring at room temperature. For example, the rate constant at 300 K is 5-10× 10- 53 cm3 ⋅molecule- 1 ⋅s- 1 for low dielectric constant (ε < 3) and around 2-4× 10- 53 cm3 ⋅molecule- 1 ⋅s- 1 for ε between 7 and 40. Our results indicate that the ε variation allows a fine tuning to the rate of the reaction.
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10
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Li G, Fan M, Lu Y, Glarborg P. Kinetic modeling of carbon monoxide oxidation and water gas shift reaction in supercritical water. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Lakshmanan S, Pratihar S, Hase WL. Direct Dynamics Simulations of the 3CH 2 + 3O 2 Reaction at High Temperature. J Phys Chem A 2021; 125:621-627. [PMID: 33405928 DOI: 10.1021/acs.jpca.0c09945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Direct dynamics simulations with the M06/6-311++G(d,p) level of theory were performed to study the 3CH2 + 3O2 reaction at 1000 K temperature on the ground state singlet surface. The reaction is complex with formation of many different product channels in highly exothermic reactions. CO, CO2, H2O, OH, H2, O, H, and HCO are the products formed from the reaction. The total simulation rate constant for the reaction at 1000 K is (1.2 ± 0.3) × 10-12 cm3 molecule-1 s-1, while the simulation rate constant at 300 K is (0.96 ± 0.28) × 10-12 cm3 molecule-1 s-1. The simulated product yields show that CO is the dominant product and the CO:CO2 ratio is 5.3:1, in good comparison with the experimental ratio of 4.3:1 at 1000 K. On comparing the product yields for the 300 and 1000 K simulations, we observed that, except for CO and H2O, the yields of the other products at 1000 K are lower at 300 K, showing a negative temperature dependence.
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Affiliation(s)
- Sandhiya Lakshmanan
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock, Texas 79409, United States.,CSIR - National Institute of Science, Technology and Development Studies, New Delhi 110060, India
| | - Subha Pratihar
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock, Texas 79409, United States
| | - William L Hase
- Department of Chemistry and Biochemistry, Texas Tech University Lubbock, Texas 79409, United States
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12
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Wolf ME, Turney JM, Schaefer HF. High level ab initio investigation of the catalytic effect of water on formic acid decomposition and isomerization. Phys Chem Chem Phys 2020; 22:25638-25651. [PMID: 33146170 DOI: 10.1039/d0cp03796f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Formic acid (FA) is a ubiquitous molecule found in the atmosphere, and is relevant to many important processes. The FA molecule generally exists as the trans isomer, which can decompose into H2O and CO (dehydration). It can also exist in the less favorable cis isomer which can decompose into H2 and CO2 (decarboxylation). Our work examines the complexes formed between each isomer of FA with water. We present geometries and vibrational frequencies obtained at the reliable CCSD(T)/aug-cc-pVTZ level of theory for seven FAwater complexes. We utilize the focal point method to determine CCSDT(Q)/CBS plus corrections binding energies of 7.37, 3.36, and 2.02 kcal mol-1 plus 6.07, 3.79, 2.60, and 2.55 kcal mol-1 for the trans-FAwater and cis-FAwater complexes, respectively. Natural bond orbital analysis is used to further decompose the interactions in each complex and gain insight into their relative strengths. Furthermore, we examine the effect that a single water molecule has on the barrier heights to each decomposition pathway by optimizing the transition states and verifying their connectivity with intrinsic reaction coordinate computations as well as utilizing a kinetic model. Water lowers the barrier to dehydration by at most 15.78 kcal mol-1 and the barrier to decarboxylation by up to 15.90 kcal mol-1. Our research also examines for the first time the effect of one water molecule on the interconversion barrier and we find that the barrier from trans to cis is not catalyzed by water due to the strong FA and water interactions. Our results highlight some instances where different binary complexes result in different decomposition pathways and even a case where one binary complex can form the same decomposition products via two distinct mechanisms. Our results provide a reliable benchmark of the FAH2O system as well as provide insight into future studies of similar atmospheric systems.
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Affiliation(s)
- Mark E Wolf
- Center for Computational Quantum Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, USA.
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Pan Y, Wang Q, Zhou M, Cai J, Tian Y, Zhang Y. Kinetic and mechanism study of UV/pre-magnetized-Fe 0/oxalate for removing sulfamethazine. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122931. [PMID: 32474319 DOI: 10.1016/j.jhazmat.2020.122931] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 05/11/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
In this study, UV irradiated photochemical reactions of oxalate (Ox) with premagnetized-Fe0 (pre- Fe0) as the catalyst was used to degrade sulfamethazine (SMT). Magnetic field promoted the release of iron ion from Fe0 thus enhanced SMT and Ox removal in UV/pre- Fe0/Ox process. X-ray photoelectron spectroscopy demonstrated that the presence of UV and Ox promoted the transformation of Fe3+ to Fe2+ on Fe0, which enhanced the surface bound •OH (•OHsurf) generation. Ox inhibited the formation of iron (hydro)xides and enhanced the hydroxylation of Fe0 surface. •OHsurf was mainly responsible for SMT removal (44%), while UV direct photolysis and •OH in the solution both caused around 28% SMT removal. The process with Ox exhibited much higher efficiency in SMT degradation than that added with H3PO4, citric acid and ethylenediaminetetraacetic acid, which greatly expanded the chelate-modified Fenton processes and their treatment efficiency.
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Affiliation(s)
- Yuwei Pan
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Qi Wang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Jingju Cai
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yusi Tian
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ying Zhang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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14
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Machado GDS, Martins EM, Baptista L, Bauerfeldt GF. Theoretical investigation of the formic acid decomposition kinetics. INT J CHEM KINET 2019. [DOI: 10.1002/kin.21341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Eduardo Monteiro Martins
- Departamento de Engenharia Sanitária e do Meio Ambiente, Faculdade de EngenhariaUniversidade do Estado do Rio de Janeiro Rio de Janeiro Brazil
| | - Leonardo Baptista
- Departamento de Química e Ambiental, Faculdade de TecnologiaUniversidade do Estado do Rio de Janeiro Resende Brazil
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Ida T, Nishida M, Hori Y. Revisiting Formic Acid Decomposition by a Graph-Theoretical Approach. J Phys Chem A 2019; 123:9579-9586. [DOI: 10.1021/acs.jpca.9b05994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomonori Ida
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Manami Nishida
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yuta Hori
- Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
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16
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Piacentino EL, Parker K, Gilbert TM, O'Hair RAJ, Ryzhov V. Role of Ligand in the Selective Production of Hydrogen from Formic Acid Catalysed by the Mononuclear Cationic Zinc Complexes [(L)Zn(H)] + (L=tpy, phen, and bpy). Chemistry 2019; 25:9959-9966. [PMID: 31090119 DOI: 10.1002/chem.201901360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/25/2019] [Indexed: 11/10/2022]
Abstract
A series of zinc-based catalysts was evaluated for their efficiency in decomposing formic acid into molecular hydrogen and carbon dioxide in the gas phase using quadrupole ion trap mass spectrometry experiments. The effectiveness of the catalysts in the series [(L)Zn(H)]+ , where L=2,2':6',2''-terpyridine (tpy), 1,10-phenanthroline (phen) or 2,2'-bipyrydine (bpy), was found to depend on the ligand used, which turned out to be fundamental in tuning the catalytic properties of the zinc complex. Specifically, [(tpy)Zn(H)]+ displayed the fastest reaction with formic acid proceeding by dehydrogenation to produce the zinc formate complex [(tpy)Zn(O2 CH)]+ and H2 . The catalysts [(L)Zn(H)]+ are reformed by decarboxylating the zinc formate complexes [(L)Zn(O2 CH)]+ by collision-induced dissociation, which is the only reaction channel for each of the ligands used. The decarboxylation reaction was found to be reversible, since the zinc hydride complexes [(L)Zn(H)]+ react with carbon dioxide yielding the zinc formate complex. This reaction was again substantially faster for L=tpy than L=phen or bpy. The energetics and mechanisms of these processes were modelled using several levels of density functional theory (DFT) calculations. Experimental results are fully supported by the computational predictions.
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Affiliation(s)
- Elettra L Piacentino
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Kevin Parker
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Thomas M Gilbert
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Victor Ryzhov
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
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17
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O'Hair RAJ, Mravak A, Krstić M, Bonačić‐Koutecký V. Models Facilitating the Design of a New Metal‐Organic Framework Catalyst for the Selective Decomposition of Formic Acid into Hydrogen and Carbon Dioxide. ChemCatChem 2019. [DOI: 10.1002/cctc.201900346] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Richard A. J. O'Hair
- School of Chemistry and BIO21 Molecular Science and Biotechnology Institute The University of Melbourne 30 Flemington Rd Parkville VIC 3010 Australia
| | - Antonija Mravak
- Center of Excellence for Science and Technology – Integration of Mediterranean Region (STIM) at Interdisciplinary Center for Advanced Sciences and Technology (ICAST) University of Split Poljička cesta 35 21000 Split Croatia
| | - Marjan Krstić
- Center of Excellence for Science and Technology – Integration of Mediterranean Region (STIM) at Interdisciplinary Center for Advanced Sciences and Technology (ICAST) University of Split Poljička cesta 35 21000 Split Croatia
| | - Vlasta Bonačić‐Koutecký
- Center of Excellence for Science and Technology – Integration of Mediterranean Region (STIM) at Interdisciplinary Center for Advanced Sciences and Technology (ICAST) University of Split Poljička cesta 35 21000 Split Croatia
- Chemistry Department Humboldt University of Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
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18
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Jin W, Pastor-Pérez L, Shen D, Sepúlveda-Escribano A, Gu S, Ramirez Reina T. Catalytic Upgrading of Biomass Model Compounds: Novel Approaches and Lessons Learnt from Traditional Hydrodeoxygenation - a Review. ChemCatChem 2019. [DOI: 10.1002/cctc.201801722] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wei Jin
- Department of Chemical and Process Engineering Department; University of Surrey; Guildford GU2 7XH United Kingdom
| | - Laura Pastor-Pérez
- Department of Chemical and Process Engineering Department; University of Surrey; Guildford GU2 7XH United Kingdom
- Laboratorio de Materiales Avanzados Departamento de Química Inorgánica Instituto Universitario de Materiales de Alicante; Universidad de Alicante; Alicante E-03080 Spain
| | - DeKui Shen
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education; Southeast University; Nanjing 210009 P.R. China
| | - Antonio Sepúlveda-Escribano
- Laboratorio de Materiales Avanzados Departamento de Química Inorgánica Instituto Universitario de Materiales de Alicante; Universidad de Alicante; Alicante E-03080 Spain
| | - Sai Gu
- Department of Chemical and Process Engineering Department; University of Surrey; Guildford GU2 7XH United Kingdom
| | - Tomas Ramirez Reina
- Department of Chemical and Process Engineering Department; University of Surrey; Guildford GU2 7XH United Kingdom
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19
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Krstić M, Jin Q, Khairallah GN, O'Hair RAJ, Bonačić‐Koutecký V. How to Translate the [LCu
2
(H)]
+
‐Catalysed Selective Decomposition of Formic Acid into H
2
and CO
2
from the Gas Phase into a Zeolite. ChemCatChem 2018. [DOI: 10.1002/cctc.201701594] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marjan Krstić
- Center of excellence for science and technology—, integration of Mediterranean region (STIM) at, Interdisciplinary Center for Advanced Sciences and Technology (ICAST) University of Split Meštrovićevo Šetalište 45 21000 Split Croatia
| | - Qiuyan Jin
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute University of Melbourne 30 Flemington Rd Parkville Victoria 3010 Australia
| | - George N. Khairallah
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute University of Melbourne 30 Flemington Rd Parkville Victoria 3010 Australia
| | - Richard A. J. O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute University of Melbourne 30 Flemington Rd Parkville Victoria 3010 Australia
| | - Vlasta Bonačić‐Koutecký
- Center of excellence for science and technology—, integration of Mediterranean region (STIM) at, Interdisciplinary Center for Advanced Sciences and Technology (ICAST) University of Split Meštrovićevo Šetalište 45 21000 Split Croatia
- Chemistry Department Humboldt University of Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
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20
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Balla R, Muthaiah B, Arathala P. Experimental and RRKM Investigations on the Degradation of Ethyl Formate. ChemistrySelect 2017. [DOI: 10.1002/slct.201701927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rajakumar Balla
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Balaganesh Muthaiah
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Parandaman Arathala
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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21
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Keolopile ZG, Ryder MR, Calzada B, Gutowski M, Buytendyk AM, Graham JD, Bowen KH. Electrophilicity of oxalic acid monomer is enhanced in the dimer by intermolecular proton transfer. Phys Chem Chem Phys 2017; 19:29760-29766. [PMID: 29105713 DOI: 10.1039/c7cp00474e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We have analyzed the effect of excess electron attachment on the network of hydrogen bonds in the oxalic acid dimer (OA)2. The most stable anionic structures may be viewed as complexes of a neutral hydrogenated moiety HOA˙ coordinated to an anionic deprotonated moiety (OA-H)-. HOA˙ acts as a double proton donor and (OA-H)- as a double proton acceptor. Thus the excess electron attachment drives intermolecular proton transfer. We have identified several cyclic hydrogen bonded structures of (OA)2-. Their stability has been analyzed in terms of the stability of the involved conformers, the energetic penalty for deformation of these conformers to the geometry of the dimer, and the two-body interaction energy between the deformed HOA˙ and (OA-H)-. There are at least seven isomers of (OA)2- with stabilization energies in the range of 1.26-1.39 eV. These energies are dominated by attractive two-body interaction energies. The anions are vertically bound electronically by 3.0-3.4 eV and adiabatically bound by at least 1.6 eV. The computational predictions are consistent with the anion photoelectron spectrum of (OA)2-. The spectrum consists of a broad feature, with an onset of 2.5 eV and spanning to 4.3 eV. The electron vertical detachment energy (VDE) is assigned to be 3.3 eV.
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Affiliation(s)
- Zibo G Keolopile
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, UK.
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22
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Ning H, Wu J, Ma L, Ren W, Davidson DF, Hanson RK. Combined Ab Initio, Kinetic Modeling, and Shock Tube Study of the Thermal Decomposition of Ethyl Formate. J Phys Chem A 2017; 121:6568-6579. [PMID: 28792750 DOI: 10.1021/acs.jpca.7b05382] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential energy surfaces (PESs) and reaction rate constants of the unimolecular decomposition of ethyl formate (EF) were investigated using high-precision theoretical methods at the CCSD(T)/CBS(T-Q)//M06-2X/6-311++G(d,p) level of theory. The calculated PESs of EF dissociation and molecular decomposition reactions indicate that the intramolecular H-shift to produce formic acid and ethylene is the dominant decomposition pathway. A detailed chemical kinetic mechanism for EF pyrolysis was constructed by incorporating the important reactions of EF and its radicals into an existing mechanism previously developed for small methyl esters. The updated mechanism was first used to reproduce CO, CO2, and H2O concentration time histories during EF pyrolysis in the shock tube reported by Ren et al. [ Ren , W. , Mitchell Spearrin , R. , Davidson , D. F. , and Hanson , R. K. J. Phys. Chem. A 2014 , 118 , 1785 - 1798 ]. The rate of production and sensitivity analyses show that the competing dehydration and decarboxylation channels of the intermediate formic acid control the final product yields of EF pyrolysis. The EF mechanism was further validated against the shock tube data of OH, CO, CO2, and H2O time histories measured during EF oxidation (equivalence ratio Φ = 1.0) at 1331-1615 K and 1.52-1.74 atm. This revised EF mechanism captured all of the species' time histories over the entire temperature range. Such modeling capability was due to the more accurate rate constants of EF reactions determined by high-precision theoretical calculations and a high-fidelity C0-C2 basis mechanism.
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Affiliation(s)
- Hongbo Ning
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong , New Territories, Hong Kong.,Shenzhen Research Institute, The Chinese University of Hong Kong , New Territories, Hong Kong
| | - Junjun Wu
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong , New Territories, Hong Kong
| | - Liuhao Ma
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong , New Territories, Hong Kong
| | - Wei Ren
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong , New Territories, Hong Kong.,Shenzhen Research Institute, The Chinese University of Hong Kong , New Territories, Hong Kong
| | - David F Davidson
- Department of Mechanical Engineering, Stanford University , Stanford, California 94305, United States
| | - Ronald K Hanson
- Department of Mechanical Engineering, Stanford University , Stanford, California 94305, United States
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23
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Jiang B, Xin S, He H, Liu X, Gao L, Tang Y, Bi X. Evaluation of the photooxidation efficiency of As(III) applying the UVC/oxalate technique. CHEMOSPHERE 2017; 182:356-363. [PMID: 28505577 DOI: 10.1016/j.chemosphere.2017.05.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 04/18/2017] [Accepted: 05/06/2017] [Indexed: 06/07/2023]
Abstract
In this study, the photooxidation capacity of UVC/Oxalate (Ox) was evaluated using As(III) as a typical pollutant. The results show that the direct oxidation amount of As(III) induced by UVC in water was negligible, but the presence of Ox remarkably accelerated the oxidation rate of As(III). Under UVC irradiation, 50 μM As(III) can be completely oxidized to As(V) in the case of Ox concentration above 300 μM within 60 min. As(III) oxidation was found greatly related with the photodecomposition of Ox. Much more Ox can be mineralized in more acidic solution. At the same time, the photooxidation of As(III) was significantly favored at decreased initial pH from 8.0 to 3.0. In this reaction system, the role of oxygen was indispensable for Ox photodecomposition and As(III) photooxidation, which can be ascribed to its special roles as a precursor of reactive superoxide and an electron acceptor. In oxygen-present atmosphere, the in situ production of H2O2 was detected during the photolysis of Ox and its photolysis product, i.e., OH primarily contributed to the oxidation of As(III). However, the photodecomposition of Ox and photooxidation of As(III) were significantly inhibited in the anaerobic environment. In general, the homogeneous photolysis of Ox in many commonly practiced UVC oxidation processes can be also proposed as a supplementary method of generating highly oxiditive species in aerobic condition.
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Affiliation(s)
- Bo Jiang
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, PR China
| | - Shuaishuai Xin
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China
| | - Haihong He
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China
| | - Xuyang Liu
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China
| | - Li Gao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, PR China; Department of Petrochemical Engineering, Karamay Vocational and Technical College, Xinjiang 833600, PR China
| | - Yizheng Tang
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China
| | - Xuejun Bi
- School of Environmental and Municipal Engineering, Qingdao University Technology, Qingdao 266033, PR China.
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24
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Vichietti RM, Spada RFK, Silva ABFD, Machado FBC, Haiduke RLA. Accurate Calculations of Rate Constants for the Forward and Reverse H2
O + CO ↔ HCOOH Reactions. ChemistrySelect 2017. [DOI: 10.1002/slct.201701137] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rafael Mario Vichietti
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos; Universidade de São Paulo; CP 780, 13560-970 São Carlos, SP Brazil
| | | | - Albérico Borges Ferreira da Silva
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos; Universidade de São Paulo; CP 780, 13560-970 São Carlos, SP Brazil
| | | | - Roberto Luiz Andrade Haiduke
- Departamento de Química e Física Molecular, Instituto de Química de São Carlos; Universidade de São Paulo; CP 780, 13560-970 São Carlos, SP Brazil
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25
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Zavras A, Krstić M, Dugourd P, Bonačić‐Koutecký V, O'Hair RAJ. Selectivity Effects in Bimetallic Catalysis: Role of the Metal Sites in the Decomposition of Formic Acid into H
2
and CO
2
by the Coinage Metal Binuclear Complexes [dppmMM′(H)]
+. ChemCatChem 2017. [DOI: 10.1002/cctc.201601675] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Athanasios Zavras
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute University of Melbourne 30 Flemington Rd Parkville, Victoria 3010 Australia
| | - Marjan Krstić
- Center of Excellence for Science and Technology, Integration of Mediterranean Region (STIM) at Interdisciplinary, Center for Advanced Sciences and Technology (ICAST) University of Split Meštrovićevo Šetalište 45 21000 Split Croatia
| | - Philippe Dugourd
- Institut Lumière Matière, CNRS Univ Lyon Université Claude Bernard Lyon 1 F-69622 Lyon France
| | - Vlasta Bonačić‐Koutecký
- Center of Excellence for Science and Technology, Integration of Mediterranean Region (STIM) at Interdisciplinary, Center for Advanced Sciences and Technology (ICAST) University of Split Meštrovićevo Šetalište 45 21000 Split Croatia
- Chemistry Department Humboldt University of Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Richard A. J. O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute University of Melbourne 30 Flemington Rd Parkville, Victoria 3010 Australia
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26
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Experimental and modeling approaches for the formation of hydroperoxide during the auto-oxidation of polymers: Thermal-oxidative degradation of polyethylene oxide. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.05.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Zavras A, Khairallah GN, Krstić M, Girod M, Daly S, Antoine R, Maitre P, Mulder RJ, Alexander SA, Bonačić-Koutecký V, Dugourd P, O'Hair RAJ. Ligand-induced substrate steering and reshaping of [Ag2(H)](+) scaffold for selective CO2 extrusion from formic acid. Nat Commun 2016; 7:11746. [PMID: 27265868 PMCID: PMC4897753 DOI: 10.1038/ncomms11746] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/26/2016] [Indexed: 12/02/2022] Open
Abstract
Metalloenzymes preorganize the reaction environment to steer substrate(s) along the required reaction coordinate. Here, we show that phosphine ligands selectively facilitate protonation of binuclear silver hydride cations, [LAg2(H)]+ by optimizing the geometry of the active site. This is a key step in the selective, catalysed extrusion of carbon dioxide from formic acid, HO2CH, with important applications (for example, hydrogen storage). Gas-phase ion-molecule reactions, collision-induced dissociation (CID), infrared and ultraviolet action spectroscopy and computational chemistry link structure to reactivity and mechanism. [Ag2(H)]+ and [Ph3PAg2(H)]+ react with formic acid yielding Lewis adducts, while [(Ph3P)2Ag2(H)]+ is unreactive. Using bis(diphenylphosphino)methane (dppm) reshapes the geometry of the binuclear Ag2(H)+ scaffold, triggering reactivity towards formic acid, to produce [dppmAg2(O2CH)]+ and H2. Decarboxylation of [dppmAg2(O2CH)]+ via CID regenerates [dppmAg2(H)]+. These gas-phase insights inspired variable temperature NMR studies that show CO2 and H2 production at 70 °C from solutions containing dppm, AgBF4, NaO2CH and HO2CH. Designing catalysts and understanding the influence of ligands for particular transformations remains a highly challenging task. Here, the authors show that bisphosphine ligands can alter the geometry of the active site in silver catalysts, driving protonation and ultimately extrusion of carbon dioxide from formic acid.
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Affiliation(s)
- Athanasios Zavras
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - George N Khairallah
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Marjan Krstić
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia
| | - Marion Girod
- Institut des Sciences Analytiques, Université de Lyon, Université Lyon 1-CNRS-ENS Lyon, 69100 Villeurbanne, France
| | - Steven Daly
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Rodolphe Antoine
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Philippe Maitre
- Laboratoire de Chimie Physique, Bâtiment 349, Université Paris-Sud, CNRS, Université Paris-Saclay, F-91405 Orsay, France
| | - Roger J Mulder
- CSIRO Manufacturing, Bayview Avenue, Clayton, Victoria 3168, Australia
| | - Stefanie-Ann Alexander
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Vlasta Bonačić-Koutecký
- Center of Excellence for Science and Technology - Integration of Mediterranean region (STIM) at Interdisciplinary Center for Advanced Science and Technology (ICAST), University of Split, Meštrovićevo šetalište 45, 21000 Split, Croatia.,Humboldt-Universität Berlin, Institut für Chemie, 12489 Berlin, Germany
| | - Philippe Dugourd
- Institut Lumière Matière, Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.,ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, 30 Flemington Road, Parkville, Victoria 3010, Australia
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28
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29
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Döntgen M, Leonhard K. Reactions of Chemically Activated Formic Acid Formed via HĊO + ȮH. J Phys Chem A 2016; 120:1819-24. [DOI: 10.1021/acs.jpca.6b00887] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Malte Döntgen
- Chair
of Technical Thermodynamics, and ‡AICES Graduate School, RWTH Aachen University, Aachen, 52062, Germany
| | - Kai Leonhard
- Chair
of Technical Thermodynamics, and ‡AICES Graduate School, RWTH Aachen University, Aachen, 52062, Germany
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30
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Zavras A, White JM, O'Hair RAJ. An unusual co-crystal [(μ2-dcpm)Ag2(μ2-O2CH)(η2-NO3)]2·[(μ2-dcpm)2Ag4(μ2-NO3)4] and its connection to the selective decarboxylation of formic acid in the gas phase. Dalton Trans 2016; 45:19408-19415. [DOI: 10.1039/c6dt03700c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Binuclear silver cluster with μ2-formate and μ2-dcpm catalyses the decomposition of HCO2H. This structural motif is present in the crystal.
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Affiliation(s)
- Athanasios Zavras
- School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
- Melbourne
- Australia
| | - Jonathan M. White
- School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
- Melbourne
- Australia
| | - Richard A. J. O'Hair
- School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
- Melbourne
- Australia
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31
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He N, Li ZH. Palladium-atom catalyzed formic acid decomposition and the switch of reaction mechanism with temperature. Phys Chem Chem Phys 2016; 18:10005-17. [DOI: 10.1039/c6cp00186f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We carefully calculated the mechanism of one-atom model and its poisoned species, PdCO, as formic acid decomposition catalysts.
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Affiliation(s)
- Nan He
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis & Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
| | - Zhen Hua Li
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis & Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433
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32
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Huang SC, Nghia NT, Putikam R, Nguyen HMT, Lin MC, Tsuchiya S, Lee YP. Reaction dynamics of O(¹D) + HCOOD/DCOOH investigated with time-resolved Fourier-transform infrared emission spectroscopy. J Chem Phys 2015; 141:154313. [PMID: 25338902 DOI: 10.1063/1.4897418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We investigated the reaction dynamics of O((1)D) towards hydrogen atoms of two types in HCOOH. The reaction was initiated on irradiation of a flowing mixture of O3 and HCOOD or DCOOH at 248 nm. The relative vibration-rotational populations of OH and OD (1 ≦ v ≦ 4, J ≤ 15) states were determined from time-resolved IR emission recorded with a step-scan Fourier-transform spectrometer. In the reaction of O((1)D) + HCOOD, the rotational distribution of product OH is nearly Boltzmann, whereas that of OD is bimodal. The product ratio [OH]/[OD] is 0.16 ± 0.05. In the reaction of O((1)D) + DCOOH, the rotational distribution of product OH is bimodal, but the observed OD lines are too weak to provide reliable intensities. The three observed OH/OD channels agree with three major channels of production predicted with quantum-chemical calculations. In the case of O((1)D) + HCOOD, two intermediates HOC(O)OD and HC(O)OOD are produced in the initial C-H and O-D insertion, respectively. The former undergoes further decomposition of the newly formed OH or the original OD, whereas the latter produces OD via direct decomposition. Decomposition of HOC(O)OD produced OH and OD with similar vibrational excitation, indicating efficient intramolecular vibrational relaxation, IVR. Decomposition of HC(O)OOD produced OD with greater rotational excitation. The predicted [OH]/[OD] ratio is 0.20 for O((1)D) + HCOOD and 4.08 for O((1)D) + DCOOH; the former agrees satisfactorily with experiments. We also observed the v3 emission from the product CO2. This emission band is deconvoluted into two components corresponding to internal energies E = 317 and 96 kJ mol(-1) of CO2, predicted to be produced via direct dehydration of HOC(O)OH and secondary decomposition of HC(O)O that was produced via decomposition of HC(O)OOH, respectively.
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Affiliation(s)
- Shang-Chen Huang
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - N T Nghia
- School of Chemical Engineering - Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Raghunath Putikam
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hue M T Nguyen
- Center for Computational Science and Faculty of Chemistry, Hanoi National University of Education, Hanoi, Vietnam
| | - M C Lin
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Soji Tsuchiya
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yuan-Pern Lee
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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33
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Nguyen TN, Putikam R, Lin MC. A novel and facile decay path of Criegee intermediates by intramolecular insertion reactions via roaming transition states. J Chem Phys 2015; 142:124312. [DOI: 10.1063/1.4914987] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Trong-Nghia Nguyen
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
- Department of Physical Chemistry, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Raghunath Putikam
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - M. C. Lin
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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34
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Molt RW, Lecher AM, Clark T, Bartlett RJ, Richards NGJ. Facile C(sp(2))-C(sp(2)) bond cleavage in oxalic acid-derived radicals. J Am Chem Soc 2015; 137:3248-52. [PMID: 25702589 DOI: 10.1021/ja510666r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Oxalate decarboxylase (OxDC) catalyzes the Mn-dependent conversion of the oxalate monoanion into CO2 and formate. Many questions remain about the catalytic mechanism of OxDC although it has been proposed that the reaction proceeds via substrate-based radical intermediates. Using coupled cluster theory combined with implicit solvation models we have examined the effects of radical formation on the structure and reactivity of oxalic acid-derived radicals in aqueous solution. Our results show that the calculated solution-phase free-energy barrier for C-C bond cleavage to form CO2 is decreased from 34.2 kcal/mol for oxalic acid to only 9.3 kcal/mol and a maximum of 3.5 kcal/mol for the cationic and neutral oxalic acid-derived radicals, respectively. These studies also show that the C-C σ bonding orbital of the radical cation contains only a single electron, giving rise to an elongated C-C bond distance of 1.7 Å; a similar lengthening of the C-C bond is not observed for the neutral radical. This study provides new chemical insights into the structure and stability of plausible intermediates in the catalytic mechanism of OxDC, and suggests that removal of an electron to form a radical (with or without the concomitant loss of a proton) may be a general strategy for cleaving the unreactive C-C bonds between adjacent sp(2)-hybridized carbon atoms.
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Affiliation(s)
- Robert W Molt
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University , Indianapolis, Indiana 46202, United States
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Clark JM, Nimlos MR, Robichaud DJ. Bimolecular Decomposition Pathways for Carboxylic Acids of Relevance to Biofuels. J Phys Chem A 2015; 119:501-16. [PMID: 25513721 DOI: 10.1021/jp509285n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jared M. Clark
- National Bioenergy Center, National Renewable Energy Laboratory, 15013
Denver West Parkway, Golden, Colorado 80401, United States
| | - Mark R. Nimlos
- National Bioenergy Center, National Renewable Energy Laboratory, 15013
Denver West Parkway, Golden, Colorado 80401, United States
| | - David J. Robichaud
- National Bioenergy Center, National Renewable Energy Laboratory, 15013
Denver West Parkway, Golden, Colorado 80401, United States
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Keolopile ZG, Ryder MR, Gutowski M. Intermolecular Interactions between Molecules in Various Conformational States: The Dimer of Oxalic Acid. J Phys Chem A 2014; 118:7385-91. [DOI: 10.1021/jp4125638] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zibo G. Keolopile
- Institute
of Chemical Sciences,
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, United Kingdom
| | - Matthew R. Ryder
- Institute
of Chemical Sciences,
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, United Kingdom
| | - Maciej Gutowski
- Institute
of Chemical Sciences,
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, United Kingdom
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Buonaugurio A, Graham J, Buytendyk A, Bowen KH, Ryder MR, Keolopile ZG, Haranczyk M, Gutowski M. Communication: Remarkable electrophilicity of the oxalic acid monomer: An anion photoelectron spectroscopy and theoretical study. J Chem Phys 2014; 140:221103. [DOI: 10.1063/1.4882655] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Inaba S. Theoretical Study of Water Cluster Catalyzed Decomposition of Formic Acid. J Phys Chem A 2014; 118:3026-38. [PMID: 24735438 DOI: 10.1021/jp5021406] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Inaba
- School
of International Liberal Studies, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050, Japan
- Department
Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad
Branch Road NW, Washington, D.C. 20015-1305, United States
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39
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Ren W, Spearrin RM, Davidson DF, Hanson RK. Experimental and modeling study of the thermal decomposition of C3-C5 ethyl esters behind reflected shock waves. J Phys Chem A 2014; 118:1785-98. [PMID: 24450585 DOI: 10.1021/jp411766b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The thermal decomposition of three ethyl esters, ethyl formate (C3H6O2), ethyl acetate (C4H8O2), and ethyl propanoate (C5H10O2), was studied behind reflected shock waves using laser absorption to measure concentration time-histories of H2O, CO2, and CO. Experimental conditions covered temperatures of 1301-1636 K, pressures of 1.48-1.72 atm, and reactant concentrations of 2000 ppm in argon. Recently developed mid-infrared laser diagnostics for H2O (2.5 μm), CO2 (4.3 μm), and CO (4.6 μm) provide orders-of-magnitude greater detectivity compared to previous near-infrared absorption sensors. The experimental results have highlighted significant differences among these three ethyl esters: negligible CO2 production during ethyl formate pyrolysis, quite slow CO formation rate during ethyl acetate pyrolysis, and nearly equal formation rate of H2O, CO2, and CO during ethyl propanoate pyrolysis. Detailed kinetic modeling was performed to understand the destruction pathways of these three ethyl esters with different alkyl chain lengths. Rate of production and sensitivity analyses were also carried out to interpret the experimental results and to identify the key reactions affecting experimental results.
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Affiliation(s)
- Wei Ren
- High Temperature Gasdynamics Laboratory, Department of Mechanical Engineering, Stanford University , Stanford, California 94305, United States
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40
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Raghunath P, Nghia N, Lin MC. Ab Initio Chemical Kinetics of Key Processes in the Hypergolic Ignition of Hydrazine and Nitrogen Tetroxide. ADVANCES IN QUANTUM CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800345-9.00007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Clark JM, Nimlos MR, Robichaud DJ. Comparison of Unimolecular Decomposition Pathways for Carboxylic Acids of Relevance to Biofuels. J Phys Chem A 2013; 118:260-74. [DOI: 10.1021/jp4095485] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jared M. Clark
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Mark R. Nimlos
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - David J. Robichaud
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
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Olbert-Majkut A, Ahokas J, Pettersson M, Lundell J. Visible Light-Driven Chemistry of Oxalic Acid in Solid Argon, Probed by Raman Spectroscopy. J Phys Chem A 2013; 117:1492-502. [DOI: 10.1021/jp311749z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adriana Olbert-Majkut
- Faculty of Chemistry, Wrocław University, F. Joliot-Curie 14, 50-383
Wrocław, Poland
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Lee PF, Matsui H, Chen WY, Wang NS. Production of H and O(3P) Atoms in the Reaction of CH2 with O2. J Phys Chem A 2012; 116:9245-54. [DOI: 10.1021/jp307140z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pei-Fang Lee
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Road, Hsinchu
30010, Taiwan
| | - Hiroyuki Matsui
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Road, Hsinchu
30010, Taiwan
| | - Wei-Yu Chen
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Road, Hsinchu
30010, Taiwan
| | - Niann-Shiah Wang
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Road, Hsinchu
30010, Taiwan
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Nguyen VS, Abbott HL, Dawley MM, Orlando TM, Leszczynski J, Nguyen MT. Theoretical Study of Formamide Decomposition Pathways. J Phys Chem A 2011; 115:841-51. [DOI: 10.1021/jp109143j] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Vinh Son Nguyen
- Department of Chemistry, and LMCC-Mathematical Modeling and Computational Science Center, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
| | - Heather L. Abbott
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - M. Michele Dawley
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Thomas M. Orlando
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Jerzy Leszczynski
- Interdisciplinary Center for Nanotoxicity, Department of Chemistry, Jackson State University, Jackson, Mississippi 39217-0510, United States
| | - Minh Tho Nguyen
- Department of Chemistry, and LMCC-Mathematical Modeling and Computational Science Center, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
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45
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Blair SA, Thakkar AJ. How many intramolecular hydrogen bonds does the oxalic acid dimer have? Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.07.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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46
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Olbert-Majkut A, Ahokas J, Lundell J, Pettersson M. Photolysis of HCOOH monomer and dimer in solid argon: Raman characterization of in situ formed molecular complexes. Phys Chem Chem Phys 2010; 12:7138-47. [DOI: 10.1039/b926658e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Chapter 17 Pyrolysis of Carboxylic Acids. PYROLYSIS OF ORGANIC MOLECULES WITH APPLICATIONS TO HEALTH AND ENVIRONMENTAL ISSUES 2010. [DOI: 10.1016/s0167-9244(09)02817-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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48
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Schreiner P, Reisenauer H. Spectroscopic Identification of Dihydroxycarbene. Angew Chem Int Ed Engl 2008; 47:7071-4. [DOI: 10.1002/anie.200802105] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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50
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Chen HT, Chang JG, Chen HL. A Computational Study on the Decomposition of Formic Acid Catalyzed by (H2O)x, x = 0−3: Comparison of the Gas-Phase and Aqueous-Phase Results. J Phys Chem A 2008; 112:8093-9. [DOI: 10.1021/jp801247d] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hsin-Tsung Chen
- National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan 74147, Taiwan, and Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Jee-Gong Chang
- National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan 74147, Taiwan, and Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Hui-Lung Chen
- National Center for High-Performance Computing, No. 28, Nan-Ke Third Road, Hsin-Shi, Tainan 74147, Taiwan, and Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
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