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Relevant bibliographies by topics / Metal-free oxidation

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Academic literature on the topic 'Metal-free oxidation'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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Journal articles on the topic "Metal-free oxidation"

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Wang, Xi, and Yingwei Li. "Nanoporous carbons derived from MOFs as metal-free catalysts for selective aerobic oxidations." Journal of Materials Chemistry A 4, no. 14 (2016): 5247–57. http://dx.doi.org/10.1039/c6ta00324a.

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A new kind of metal-free catalyst comprised of highly graphitized N-doped nanoporous carbons from direct carbonization of metal–organic frameworks (MOFs) turns out to be an excellent metal-free catalyst for a series of liquid-phase oxidation reactions including aerobic oxidations of cyclohexane and toluene as well as oxidative coupling of amines.

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Zhao, Rong, Denghu Chang, and Lei Shi. "Recent Advances in Cyclic Diacyl Peroxides: Reactivity and Selectivity Enhancement Brought by the Cyclic Structure." Synthesis 49, no. 15 (2017): 3357–65. http://dx.doi.org/10.1055/s-0036-1588458.

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Preliminarily studies on cyclic diacyl peroxides have shown novel and superior reactivities compared with their acyclic diacyl peroxide counterparts in many reaction types. After summarizing the methods available for the preparation of cyclic diacyl peroxides and describing their structural features, this review brings together an overview of their reactivities with respect to oxidations and decarboxylations, and demonstrates the advantages of reactions with cyclic diacyl peroxides, which include metal-free, additive-free, milder conditions, higher yields and better selectivities.1 Introductio

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Uyanik, Muhammet, Dai Nagata, and Kazuaki Ishihara. "Hypoiodite-catalysed oxidative homocoupling of arenols and tandem oxidation/cross-coupling of hydroquinones with arenes." Chemical Communications 57, no. 88 (2021): 11625–28. http://dx.doi.org/10.1039/d1cc05171g.

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Duan, Xiaoguang, Hongqi Sun, and Shaobin Wang. "Metal-Free Carbocatalysis in Advanced Oxidation Reactions." Accounts of Chemical Research 51, no. 3 (2018): 678–87. http://dx.doi.org/10.1021/acs.accounts.7b00535.

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Dos Santos, Aurélie, Laurent El Kaïm, and Laurence Grimaud. "Metal-free aerobic oxidation of benzazole derivatives." Organic & Biomolecular Chemistry 11, no. 20 (2013): 3282. http://dx.doi.org/10.1039/c3ob27404g.

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Lou, Ji-Cong, Jian-Ye Li, Wen-Wu Sun, and Bin Wu. "Metal-Free Oxidation of Trichloroacetimidates to Aldehydes." Asian Journal of Organic Chemistry 8, no. 2 (2019): 265–68. http://dx.doi.org/10.1002/ajoc.201800683.

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Biswas, Swapan Kumar, and Titas Biswas. "Metal-free one-pot oxidative conversion: Molecular Iodine Mediated Oxidation Organic Reactions." International Journal of Experimental Research and Review 27 (April 30, 2022): 45–52. http://dx.doi.org/10.52756/ijerr.2022.v27.005.

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Various oxidative compounds such as aldehyde, ketone ester, and acids can be produced in large yields by an effective iodine-mediated oxidative reaction of organic molecules. Molecular iodine is a generally available and commercially extremely inexpensive substance that induces oxidative esterification. With the comparison with different Brønsted acid catalysis, molecular iodine or iodophilic activations proceed the reaction onto a deoxygenation pathway. With only a few mol% of I2, the oxidation occurs very quickly at room temperature. This approach could also be used to transport different be

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Zografos, Alexandros, and Marina Petsi. "Advances in Catalytic Aerobic Oxidations by Activation of Dioxygen-Monooxygenase Enzymes and Biomimetics." Synthesis 50, no. 24 (2018): 4715–45. http://dx.doi.org/10.1055/s-0037-1610297.

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Monooxygenases are not only some of the most versatile machineries in our lives, but also some of the most explored enzymes in modern organic synthesis. They provide knowledge and inspiration on how the most abandoned oxidant, dioxygen, can be activated and utilized to deliver selective oxidations. This review presents an outline in the mechanisms that Nature uses to succeed in these processes and recent indicative examples on how chemists use this knowledge to develop selective oxidation protocols based on dioxygen as the terminal oxidant.1 Introduction2 Monooxygenases2.1 Metal-Based Monooxyg

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Hamami, Zine Eddine, Laurent Vanoye, Pascal Fongarland, Claude de Bellefon, and Alain Favre-Reguillon. "Metal-free, visible light-promoted aerobic aldehydes oxidation." Journal of Flow Chemistry 6, no. 3 (2016): 206–10. http://dx.doi.org/10.1556/1846.2016.00023.

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Rahimi, Alireza, Ali Azarpira, Hoon Kim, John Ralph, and Shannon S. Stahl. "Chemoselective Metal-Free Aerobic Alcohol Oxidation in Lignin." Journal of the American Chemical Society 135, no. 17 (2013): 6415–18. http://dx.doi.org/10.1021/ja401793n.

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Dissertations / Theses on the topic "Metal-free oxidation"

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Schilling, Waldemar [Verfasser]. "Approaches for Transition Metal-Free Photocatalytic Oxidation Reactions / Waldemar Schilling." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2021. http://d-nb.info/1233009001/34.

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Crites, Charles-Oneil. "Investigating the Interactions between Free Radicals and Supported Noble Metal Nanoparticles in Oxidation Reactions." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33404.

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This thesis studies the interaction between free radical species and supported noble metal nanoparticles (silver and gold) in the context of oxidation reactions. The peroxidation of cumene is the first reaction to be discussed and the difference in peroxidation product distribution using silver nanoparticles (AgNP) versus gold nanoparticles (AuNP) is examined. Specifically, cumyl alcohol is obtained as the major product obtained when using supported AuNP, whereas cumene hydroperoxide is favoured for AgNP. Such variations in product distribution are partially explained by the differences in the

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Duong-Viet, Cuong. "Synthesis and processing of nitrogen-doped carbon nanotubes as metal-free catalyst for H2S selective oxidation process." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF029/document.

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Les nanotubes de carbone (NTCs) dopés avec différents hétéroéléments tels que l'oxygène et l'azote connaissent un intérêt croissant dans le domaine de la catalyse hétérogène comme leur utilisation en tant que catalyseur sans métaux. L'objectif de cette thèse consiste à la synthèse et la caractérisation de matériaux catalytiques à base de NTC dopés à l'azote supportés sur du carbure de silicium SiC par voie in situ (CVD) et ex-situ méthodes. Une autre approche a été utilisée pour la fonctionnalisation de la surface des nanotubes de carbone et basées sur l'utilisation d'un agent oxydant (HNO3) e

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Bansode, A. H. "Synthesis of biologically important molecular and development of synthetic methodologies involving oxidation reaction via visible-light and transition metal-free conditions." Thesis(Ph.D.), CSIR-National Chemical Laboratory Pune, 2021. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/6014.

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Yang, Weilu. "Electrochemical advanced oxidation processes for emerging organic contaminants removal with graphene-based modified carbon felt electrode." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2025.

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Grâce au développement continu de technologies d'analyse environnementale, certains produits chimiques, qui sont reconnus être nocif, ont récemment attiré l'attention, puisqu'ils constituent un menace pour l'environnement et la santé publique.Parmi ces polluants émergent, les produits pharmaceutiques et de soins personnels (PPSP)sont devenus le cibles dela recherche internationale. La chine est le plus grand producteur et le marché des médicaments dans le monde. Avec le développement de l'économie sociale et l'amélioration du niveau de vie de la population, de la production et de l'utilisation

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Zhang, Yu. "Visible Light-Mediated Metal-Free Photocatalytic Oxidative Reactions and Cycloadditions." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-14EF-8.

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SUAREZ, BERTOA RICARDO. "Sustainable procedures in organic synthesis." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/7474.

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O-acyl-N-benzyllactamides are obtained in good yield by reaction of 4-benzyl-5-methyl-1,3-oxazolidine-2,4-diones with Grignards reagents and with lithium alkyls. Three alkanes and two ethers were oxidised with ozone in dichloromethane solution or in aqueous pH 3 suspension. Cyclodecane and cyclododecane were converted into the corresponding cycloalkanones. n-decane was converted into a mixture of isomeric n-decanones and carboxylic acids. An ester was formed from the ethers. Hence, one of the methylene groups of these substrates is generally converted into a carbonyl group. Some of these react

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Duan, Xiaoguang. "Catalytic Oxidative Degradation of Hydrocarbons Using Novel Metal-Free Nanocarbon Catalysts." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/1951.

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This research presents novel nanocarbon materials as green and metal-free carbocatalysts for advanced oxidative processes toward environmental remediation. Various nanocarbons exhibit high catalytic activity in activation of sulfate oxidants for degradation of water contaminants. The tailored surface chemistry of nanocarbons and insightful mechanistic studies for catalytic activation of superoxides were revealed via deliberate materials design, advanced characterization techniques and theoretical calculations.The findings would significantly contribute to materials chemistry, environmental sc

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Zhang, Yu [Verfasser]. "Visible Light-Mediated Metal-Free Photocatalytic Oxidative Reactions and Cycloadditions / Yu Zhang." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1221802372/34.

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Ayoub, Nadim. "Synthèse et valorisation des dérivés furaniques issus de la biomasse par oxydations sélectives." Electronic Thesis or Diss., Compiègne, 2022. http://www.theses.fr/2022COMP2677.

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La biomasse fait partie des ressources renouvelables qui peuvent répondre durablement à nos besoins de production de carburants, de produits chimiques et de matériaux. En effet, la biomasse non comestible telle que la lignocellulose a attiré l'attention des chercheurs et des scientifiques au cours des dernières décennies en tant qu'alternative renouvelable. Le furfural et le 5-hydroxyméthylfurfural (HMF), dérivés de la déshydratation des pentoses et des hexoses respectivement, sont produits à plusieurs millions de tonnes par an. Ces derniers composés sont donc des molécules plateformes et repr

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Book chapters on the topic "Metal-free oxidation"

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Cheng, Xin, and Hongguang Guo. "Chapter 6. Metal-free Carbocatalysis for Persulfate Activation Toward Organic Oxidation." In Persulfate-based Oxidation Processes in Environmental Remediation. Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00145.

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Navalón, Sergio, Raúl Herance, Mercedes Álvaro, and Hermenegildo García. "CHAPTER 4. Aerobic Oxidations Using Metal-free Heterogeneous Systems." In Catalysis Series. Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781839160332-00078.

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Unglaube, F., and E. Mejía. "CHAPTER 5. Aerobic Oxidations Reactions Using Metal-free Homogeneous Systems." In Catalysis Series. Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781839160332-00104.

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Madkour, Loutfy H. "Ecotoxicology of Environmental Heavy Metal Ions and Free Radicals on Macromolecule Cell Organisms." In Nanoparticles Induce Oxidative and Endoplasmic Reticulum Stresses. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37297-2_1.

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Dohi, Toshifumi, and Yasuyuki Kita. "Hypervalent Iodine-Induced Oxidative Couplings (New Metal-Free Coupling Advances and Their Applications in Natural Product Syntheses)." In Hypervalent Iodine Chemistry. Springer International Publishing, 2016. http://dx.doi.org/10.1007/128_2016_667.

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Figadère, B., and X. Franck. "Synthesis by Metal-Free Oxidation." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-00158.

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Shacter, Emily, Joy A. Williams, Earl R. Stadtman, and Rodney L. Levine. "Determination of carbonyl groups in oxidized proteins." In Free Radicals. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780199635603.003.0011.

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Abstract There is now a bewildering array of biological processes in which free radicals have been implicated (2), and we assume that enzymes and structural proteins may be attacked whenever free radicals are generated. As a con sequence, oxidative modification of proteins may occur in a variety of physiological and pathological processes. Although the distinction is. some times arbitrary, these modifications may be primary or secondary. Primary modifications occur in metal-catalysed oxidation, radiation-mediated oxidation, and in oxidation by ozone or oxides of nitrogen. Secondary modificatio

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Cchjda, Koh. "ROS damage to protein." In Experimental protocols for reactive oxygen and nitrogen species. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198506683.003.0074.

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Abstract Several lines of evidence indicate that protein oxidation by free radicals and the subsequent accumulation of oxidatively modified proteins, which could be an early indication of oxygen radical-mediated tissue damage, have been found in cells during ageing, after oxidative stress, and in various pathological states including premature ageing diseases, muscular dystrophy, rheumatoid arthritis, and atherosclerosis (1). Furthermore, free radical-mediated oxidative inactivation of enzymes, especially by metal-catalysed oxidation systems, have been postulated as marking steps in enzyme tur

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Constable, Edwin C. "Reactivity of macrocyclic complexes." In Coordination Chemistry of Macrocyclic Compounds. Oxford University Press, 1999. http://dx.doi.org/10.1093/hesc/9780198556923.003.0006.

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This chapter assesses the reactivity of macrocyclic complexes. It looks at axial substitution reactions and reactions of the coordinated macrocyclic ligand. The chapter also considers demetallation and metal exchange reactions, as well as metal-centred oxidation and reduction reactions. Finally, the chapter covers ligand-centred redox processes. Numerous examples are known in which macrocyclic ligands undergo this type of redox process. Direct hydrogenation reactions of both free ligands and metal complexes are possible, although reactions of the free ligands are perhaps more common. Oxidation

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Santana, V. C. S., L. S. Munaretto, and E. C. de Lucca, Jr. "26.1.2.5 Synthesis of Ketones by Oxidation of Alkanes (Update 2022)." In Knowledge Updates 2022/1. Georg Thieme Verlag KG, 2022. http://dx.doi.org/10.1055/sos-sd-126-00120.

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AbstractThis chapter is an update to Science of Synthesis Section 26.1.2, which included the synthesis of ketones by oxidation of alkanes. This contribution is focused on reports published during the period 2007–2020 that describe the synthesis of ketones by transition-metal catalysis, photochemically and electrochemically mediated methods, as well as the use of supported catalysts and metal-free oxidation of alkanes.

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Conference papers on the topic "Metal-free oxidation"

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Abello, Mary Angel, Lorenzo Mezzomo, Valentina Mataloni, Andrea Bonfanti, and Federico Bertasi. "Green Sealants for the Anodic Oxidation of AlSi Alloys." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00156.

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Abstract The manuscript investigates the use of new sealants in the anodizing process of Aluminium-Silicon (AlSi) alloys with a different content of alloying elements. Particular attention is devoted to sealants with a low environmental impact and reduced health hazards including heavy-metal-free and nontoxic reagents. Metallographic analysis, oxide thickness evaluation, electrochemical noise measurements (ENMs) and neutral salt spray (NSS) tests allow to unveil the complex interplay between the chemical nature of the sealant agent and the corrosion resistance of the obtained anodic layers. It

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Brill, U., and D. C. Agarwal. "Alloy 603 GT - A New Improved Cobalt-Free Alloy for Gas Turbines." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97138.

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Abstract Alloy 603 GT is a newly developed cobalt-free Ni-base alloy. The composition of the alloy guarantees excellent high temperature strength due to the high carbon content of 0.2 - 0.4 wt.-% provide high thermal stability so that resolutioning during service cannot occur, thus preventing grain provide high thermal stability so that resolutioning during service cannot occur, thus preventing grain growth and maintaining the long term mechanical properties. Superior high temperature corrosion resistance up to 1200°C (2192°F) is provided by the formation of alumina scale due to the high alumi

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Brill, U., and D. C. Agarwal. "Alloy 2100 GT: a New Ta-Fortifield Ni-Cr-Al-Alloy for Land Based Gas Turbines." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99057.

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Abstract Alloy 2100 GT has been developed for use in the combustors of gas turbines. The improved high-temperature properties of the alloy should allow the metal temperature of the combustion chamber to be increased, which would provide the opportunity of increasing the efficiency, lowering emissions, and decreasing fuel consumption. This alloy is a cobalt, tungsten, and molybdenum-free Ni-base super-alloy. It contains as major alloying elements 25 wt.-% chromium, 8 wt.-% tantalum, 3 wt.-% aluminium, 0.3 wt.-% carbon and 0.1 wt.-% yttrium. High-temperature strength is achieved by solid solutio

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Fu, Wenjie, Yingchao Li, Dake Xu, and Tingyue Gu. "Comparison of Two Different Types of Anaerobic Copper Biocorrosion Mechanisms by a Sulfate Reducing Bacterium and a Nitrate Reducing Bacterium." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-3878.

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Abstract Biocorrosion, also known as Microbiologically Influenced Corrosion or MIC, is caused by biofilms. Anaerobic MIC has at least two distinct types. Type I MIC involves utilization of extracellular electrons released by the oxidation of an energetic metal such as elemental iron (Fe0). These electrons are transported by sessile cells on or very close to the metal surface across their cell walls to the cytoplasm where the electrons are used for reduction of an exogenous electron acceptor (oxidant) such as sulfate and nitrate under biocatalysis. The biofilm benefits from the energy released

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Chen, B., J. Lindsay, R. A. Ainsworth, and F. Scenini. "Oxidation Behavior of an Austenitic Stainless Steel Used in the UK Advanced Gas-Cooled Reactors." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05965.

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Abstract The UK’s advanced gas-cooled (AGR) nuclear reactors have operated over the last 30 years, with the austenitic stainless steel sections primarily operating at temperatures ranging from 470 °C up to 650 °C. The coolant gases used in this type of nuclear system contain a mixture of carbon dioxide, carbon monoxide, hydrogen, methane and water vapor. A number of cracks have been reported in superheater boiler components made from 4 mm thick austenitic stainless steel tubes. The mechanism underlying the initiation of cracks is believed to be creep-fatigue which may be exacerbated by carburi

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Goland, Micaela, Fanny Balbaud, Alexis Fouchereau, et al. "Corrosion Behavior of Additively Manufactured Stainless Steels in Nuclear Environments." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0023.

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Abstract This study examines the corrosion resistance of additively manufactured 316L stainless steel (SS) for nuclear applications across three environments: pressurized water reactor primary water (PWR PW), hot concentrated nitric acid, and seawater. Wire-feed laser additive manufacturing (WLAM) specimens showed oxidation behavior similar to wrought 316L SS in PWR PW, though stress corrosion cracking (SCC) susceptibility varied with heat treatment. In nitric acid testing, laser powder bed fusion (L-PBF) specimens demonstrated superior corrosion resistance compared to conventional SS, primari

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Cummings, Arthur L., Fred C. Veatch, and Alfred E. Keller. "Corrosion and Corrosion Control Methods in Amine Systems Containing H2S." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97341.

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Abstract Overall H2S-amine system corrosion rates are determined by the rate of acid oxidation of iron by dissolved forms of H2S and CO2 in highly buffered basic solutions. Rates of interference with the laydown or removal of the protective layer of iron sulfide corrosion product from the free metal are also part of the equation. These two phenomena are functions of the concentration and form of the oxidizing acid, the solution temperature, the fluid velocity, and the concentration of heat stable salt anions. The effect of solution pH, cation content and different heat stable salt anions on th

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Rice, Rip G. "Byproducts of Ozonation Formed During Treatment of Water." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93479.

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ABSTRACT Ozone has been used commercially for the treatment of drinking water for nearly a century -- yet definitive studies identifying byproducts of organic and inorganic solutes have been conducted only within the past 15 years. In this paper, the author will present results of an extended literature survey on the subject, and extrapolate this information to what byproducts can be expected to form during ozonation of recycling cooling waters. In general, organic byproducts of ozone oxidation consist of aldehydes, acids, aldehyde-acids, keto-acids, polybasic-acids, and peroxides. Some of the

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Webb, Steven L., and Gerhard Bohnsack. "The Kinetics of the Schikorr Reaction on Steel Surfaces at Low Temperatures." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89311.

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Abstract The reaction of pure, oxygen-free water with carbon steel has been studied at lower temperatures than that at which spontaneous magnetite formation is generally recognized. In a flow-through reactor, mild steel wool was briefly pickled with hydrofluoric acid (pH = 3) to remove any iron oxide. The acid pickle was followed by a continuous flow of pure water for several weeks. Oxidation of the steel by water was monitored by following the iron concentration in the effluent stream. A decrease in the effluent iron concentration over the period of the experiment suggested the development of

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Mao, X., and D. Li. "Modelling Stress Corrosion Crack Growth of Austenitic Stainless Steel in Boiling MgCl2 by Slip-Step Dissolution and Crack Tip Deformation Analysis." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95177.

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Abstract It is hypothesized that, for ductile austenitic stainless steels exposed to boiling MgCl2 solution, the relevant crack propagation mechanism is slip dissolution. This model relates crack advance to oxidation or anodic dissolution that occurs on the bare surface that is created when a thermodynamically stable, protective film at the crack tip mechanically ruptured. Based on the model of slip-bare metal dissolution-repassivation and crack tip strain analysis, a theoretical equation of stress corrosion crack growth rate as a function of crack-tip strain rate and potential for 321 stainle

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Reports on the topic "Metal-free oxidation"

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Kanner, Joseph, Dennis Miller, Ido Bartov, John Kinsella, and Stella Harel. The Effect of Dietary Iron Level on Lipid Peroxidation of Muscle Food. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604282.bard.

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Biological oxidations are almost exclusively metal ion-promoted reactions and in ths respect iron, being the most abundant, is the commonly involved. The effect of dietary iron levels on pork, turkey and chick muscle lipid peroxidation and various other related compounds were evaluated. Crossbred feeder pigs were fed to market weight on corn-soy rations containing either 62, 131 or 209 ppm iron. After slaughter, the muscles were dissected, cooked and stored at 4°C. Heavily fortifying swine rations with iron (>200 ppm) increase nn-heme iron (NHI), thiobarbituric acid reactive substances (TBA

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