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Study of the stability of iodine oxides (IxOy) aerosols in severe accident conditions. ANN NUCL ENERGY 2023. [DOI: 10.1016/j.anucene.2022.109526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Nanjo K, Shiotsu H, Maruyama Y, Sugiyama T, Okamoto K. Estimation for mass transfer coefficient under two-phase flow conditions using two gas components. J NUCL SCI TECHNOL 2023. [DOI: 10.1080/00223131.2022.2146015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kotaro Nanjo
- Severe Accident Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Naka-gun, Japan
| | - Hiroyuki Shiotsu
- Severe Accident Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Naka-gun, Japan
| | - Yu Maruyama
- Severe Accident Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Naka-gun, Japan
| | - Tomoyuki Sugiyama
- Severe Accident Research Group, Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki, Naka-gun, Japan
| | - Koji Okamoto
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo, Bunkyo-ku, Japan
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Nanjo K, Ishikawa J, Sugiyama T, Pellegrini M, Okamoto K. Revolatilization of iodine by bubbly flow in the suppression pool during an accident. J NUCL SCI TECHNOL 2022. [DOI: 10.1080/00223131.2022.2062065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Kotaro Nanjo
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki Japan
| | - Jun Ishikawa
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki Japan
| | - Tomoyuki Sugiyama
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Ibaraki Japan
| | - Marco Pellegrini
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo Japan
| | - Koji Okamoto
- Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Tokyo Japan
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Shee A, Saue T, Visscher L, Severo Pereira Gomes A. Equation-of-motion coupled-cluster theory based on the 4-component Dirac–Coulomb(–Gaunt) Hamiltonian. Energies for single electron detachment, attachment, and electronically excited states. J Chem Phys 2018; 149:174113. [DOI: 10.1063/1.5053846] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Avijit Shee
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, Michigan 48109-1055, USA
- Université de Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - Trond Saue
- Laboratoire de Chimie et Physique Quantiques, UMR 5626 CNRS—Université Toulouse III–Paul Sabatier, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Lucas Visscher
- Division of Theoretical Chemistry, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - André Severo Pereira Gomes
- Université de Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
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Fortin C, Khanniche S, Khiri D, Fèvre-Nollet V, Lebègue P, Cousin F, Černušák I, Louis F. Reactivity of Hydrogen Peroxide with Br and I Atoms. J Phys Chem A 2018; 122:1053-1063. [PMID: 29290117 DOI: 10.1021/acs.jpca.7b10318] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction mechanisms of Br and I atoms with H2O2 have been investigated using DFT and high-level ab initio calculations. The H-abstraction and OH-abstraction channels were highlighted. The geometries of the stationary points were optimized at the B3LYP/aug-cc-pVTZ level of theory, and the energetics were recalculated with the coupled cluster theory. Spin-orbit coupling for each halogenated species was also explicitly computed by employing the MRCI level of theory. Thermochemistry for HOBr and HOI has been revised and updated standard enthalpies of formation at 298 K for HOBr and HOI are the following: ΔfH°298K(HOBr) = (-66.2 ± 4.6) kJ mol-1 and ΔfH°298K(HOI) = (-66.8 ± 4.7) kJ mol-1. The rate constants have been estimated using transition state theory (TST), canonical variational transition state theory (CVT), and CVT with small curvature tunneling (CVT/SCT) over a wide temperature range (250-2500 K). For the direct abstraction mechanism, the overall rate constant at 300 K was predicted to be 2.58 × 10-16 and 7.42 × 10-25 cm3 molecule-1s-1 for the Br + H2O2 and I + H2O2 reactions, respectively. The modified Arrhenius parameters have been estimated for the overall reactions: kBr+H2O2(T) = 4.80 × 10-26 T4.31 exp(-5.51 (kJ mol-1)/RT) and kI+H2O2(T) = 3.41 × 10-23 T3.29 exp(-56.32 (kJ mol-1)/RT).
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Affiliation(s)
- Camille Fortin
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES , Cadarache, St Paul Lez Durance, 13115, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Sarah Khanniche
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Dorra Khiri
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Valérie Fèvre-Nollet
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Patrick Lebègue
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Frédéric Cousin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES , Cadarache, St Paul Lez Durance, 13115, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
| | - Ivan Černušák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Ilkovičova 6, 84215 Bratislava, Slovakia
| | - Florent Louis
- Universite Lille, CNRS, UMR 8522 - PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère , F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R) , Cadarache, St Paul Lez Durance, 13115, France
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Khanniche S, Louis F, Cantrel L, Černušák I. A theoretical study of the microhydration of iodic acid (HOIO2). COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Khanniche S, Louis F, Cantrel L, Černušák I. A Density Functional Theory and ab Initio Investigation of the Oxidation Reaction of CO by IO Radicals. J Phys Chem A 2016; 120:1737-49. [PMID: 26908233 DOI: 10.1021/acs.jpca.6b00047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To get an insight into the possible reactivity between iodine oxides and CO, a first step was to study the thermochemical properties and kinetic parameters of the reaction between IO and CO using theoretical chemistry tools. All stationary points involved were optimized using the Becke's three-parameter hybrid exchange functional coupled with the Lee-Yang-Parr nonlocal correlation functional (B3LYP) and the Møller-Plesset second-order perturbation theory (MP2). Single-point energy calculations were performed using the coupled cluster theory with the iterative inclusion of singles and doubles and the perturbative estimation for triple excitations (CCSD(T)) and the aug-cc-pVnZ (n = T, Q, and 5) basis sets on geometries previously optimized at the aug-cc-pVTZ level. The energetics was then recalculated using the one-component DK-CCSD(T) approach with the relativistic ANO basis sets. The spin-orbit coupling for the iodine containing species was calculated a posteriori using the restricted active space state interaction method in conjunction with the multiconfigurational perturbation theory (CASPT2/RASSI) employing the complete active space (CASSCF) wave function as the reference. The CCSD(T) energies were also corrected for BSSE for molecular complexes and refined with the extrapolation to CBS limit while the DK-CCSD(T) values were refined with the extrapolation to FCI. The exploration of the potential energy surface revealed a two-steps mechanism with a trans and a cis pathway. The rate constants for the direct and complex mechanism were computed as a function of temperature (250-2500 K) using the canonical transition state theory. The three-parameter Arrhenius expressions obtained for the direct and indirect mechanism at the DK-CCSD(T)-cf level of theory is 1.49 × 10(-17) × T(1.77) exp(-47.4 (kJ mol(-1))/RT).
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Affiliation(s)
- Sarah Khanniche
- University Lille, CNRS, UMR 8522-PC2A, PhysicoChimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Florent Louis
- University Lille, CNRS, UMR 8522-PC2A, PhysicoChimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Laurent Cantrel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Cadarache, St Paul Lez Durance, 13115, France.,Laboratoire de Recherche Commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité″ (C3R), Cadarache, St Paul Lez Durance, 13115, France
| | - Ivan Černušák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava , Mlynská dolina CH1, 84215 Bratislava, Slovakia
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Kim HC, Cho YH. Raim – A model for iodine behavior in containment under severe accident condition. NUCLEAR ENGINEERING AND TECHNOLOGY 2015. [DOI: 10.1016/j.net.2015.06.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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THAI test facility for experimental research on hydrogen and fission product behaviour in light water reactor containments. NUCLEAR ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.nucengdes.2015.09.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Recent advances in the source term area within the SARNET European severe accident research network. NUCLEAR ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.nucengdes.2015.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dickinson S, Auvinen A, Ammar Y, Bosland L, Clément B, Funke F, Glowa G, Kärkelä T, Powers D, Tietze S, Weber G, Zhang S. Experimental and modelling studies of iodine oxide formation and aerosol behaviour relevant to nuclear reactor accidents. ANN NUCL ENERGY 2014. [DOI: 10.1016/j.anucene.2014.05.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cantrel L, Cousin F, Bosland L, Chevalier-Jabet K, Marchetto C. ASTEC V2 severe accident integral code: Fission product modelling and validation. NUCLEAR ENGINEERING AND DESIGN 2014. [DOI: 10.1016/j.nucengdes.2014.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Allelein HJ, Reinecke EA, Belt A, Broxtermann P, Kelm S. COMBINED ANALYTICAL AND EXPERIMENTAL INVESTIGATIONS FOR LWR CONTAINMENT PHENOMENA. NUCLEAR ENGINEERING AND TECHNOLOGY 2012. [DOI: 10.5516/net.03.2012.702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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