Gotowe bibliografie tematyczne / Catalyse de fer

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Gotowa bibliografia na temat „Catalyse de fer”

Autor: Grafiati

Data publikacji: 30 listopada 2024

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Catalyse de fer"

Berger, Jade. "Le vestige sidérurgique, du déchet industriel à l’objet patrimonial." Journal des anthropologues 180-181 (2025): 103–18. https://doi.org/10.4000/14bx3.

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En Lorraine du Fer, le phénomène de désindustrialisation fait apparaître à partir de 1968 de multiples friches sidérurgiques où les lieux de production et les machines, devenus désuets, sont assimilés à des déchets industriels sans valeur apparente. La politique de table rase engagée par les industriels, puis celle de renaturation préconisée par les acteurs de la reconversion, entrainent la démolition des usines sidérurgiques. Pourtant, la disparition rapide des vestiges catalyse le phénomène de patrimonialisation puisque de nombreux acteurs s’investissent dans le devenir-déchet de l’usine. Ce

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Siffert, B., and A. Naidja. "Decarboxylation catalytique de l'acide oxaloacetique en presence de montmorillonite." Clay Minerals 22, no. 4 (1987): 435–46. http://dx.doi.org/10.1180/claymin.1987.022.4.07.

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ResumeLa décarboxylation de l'acide oxaloacétique en acide pyruvique a été étudiée en présence de montmorillonite saturée en cations différents et des mêmes cations à l'état libre (non incorporés). L'action catalytique dépend de la nature du cation, cést-à-dire de sa facilité à former des complexes avec l'acide oxaloacétique. Le réseau argileux intervient dans la catalyse essentiellement par les atomes d'aluminium (ou de fer) situés sur les bords des feuillets argileux. Il joue le rôle d'un métalloenzyme biologique. Le calcul des énergies d'activation pour les différents systèmes met bien en é

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D'Hont, M., and J. C. Jungers. "Contribution à l'étude du mécanisme de la catalyse hétérogène: L'Activation de l'Azote par le fer et le Nickel." Bulletin des Sociétés Chimiques Belges 58, no. 10-12 (2010): 450–59. http://dx.doi.org/10.1002/bscb.19490581004.

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Jurkowski, Artur, and Zofia Lendzion-Bieluń. "Determination of Fe2+/Fe3+ mole ratio based on the change of precursor lattice parameters of wustite based iron catalysts for the ammonia synthesis." Polish Journal of Chemical Technology 21, no. 3 (2019): 48–52. http://dx.doi.org/10.2478/pjct-2019-0029.

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Abstract In the presented article, oxide forms of iron catalysts with the wustite structure and with a R = Fe2+/Fe3+ molar ratio in the range from 3.78 to 8.16 were investigated. The chemical composition of the tested catalyst precursors was determined by inductively coupled plasma optical emission spectrometry (ICP-OES). The X-ray diffraction (XRD) technique was used to determine the phase composition and location of reflections characteristic of the Fe1−xO phase. The molar ratio of iron ions R = Fe2+/Fe3+ was determined by manganometric titration. The distribution of promoters in the structu

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Sun, Xinhui, Antonios Arvanitis, Devaiah Damma, et al. "Carbon Nanotube Formation on Cr-Doped Ferrite Catalyst during Water Gas Shift Membrane Reaction: Mechanistic Implications and Extended Studies on Dry Gas Conversions." Catalysts 10, no. 8 (2020): 927. http://dx.doi.org/10.3390/catal10080927.

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A nanocrystalline chromium-doped ferrite (FeCr) catalyst was shown to coproduce H2 and multiwalled carbon nanotubes (MWCNTs) during water gas shift (WGS) reaction in a H2-permselective zeolite membrane reactor (MR) at reaction pressures of ~20 bar. The FeCr catalyst was further demonstrated in the synthesis of highly crystalline and dimensionally uniform MWCNTs from a dry gas mixture of CO and CH4, which were the apparent sources for MWCNT growth in the WGS MR. In both the WGS MR and dry gas reactions, the operating temperature was 500 °C, which is significantly lower than those commonly used

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Gholami, Fatemeh, Zahra Gholami, Martin Tomas, Veronika Vavrunkova, Somayeh Mirzaei, and Mohammadtaghi Vakili. "Promotional Effect of Manganese on Selective Catalytic Reduction of NO by CO in the Presence of Excess O2 over M@La–Fe/AC (M = Mn, Ce) Catalyst." Catalysts 10, no. 11 (2020): 1322. http://dx.doi.org/10.3390/catal10111322.

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The catalytic performance of a series of La-Fe/AC catalysts was studied for the selective catalytic reduction (SCR) of NO by CO. With the increase in La content, the Fe2+/Fe3+ ratio and amount of surface oxygen vacancies (SOV) in the catalysts increased; thus the catalytic activity improved. Incorporating the promoters to La3-Fe1/active carbon (AC) catalyst could affect the catalyst activity by changing the electronic structure. The increase in Fe2+/Fe3+ ratio after the promoter addition is possibly due to the extra synergistic interaction of M (Mn and Ce) and Fe through the redox equilibrium

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Wang, Yizhou, Zheng Wang, Qiuyue Zhang, et al. "Non-Symmetrically Fused Bis(arylimino)pyridines with para-Phenyl Substitution: Exploring Their Use as N′,N,N″-Supports in Iron Ethylene Polymerization Catalysis." Catalysts 14, no. 3 (2024): 213. http://dx.doi.org/10.3390/catal14030213.

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Through the implementation of a one-pot strategy, five examples of non-symmetrical [N,N-diaryl-11-phenyl-1,2,3,7,8,9,10-heptahydrocyclohepta[b]quinoline-4,6-diimine]iron(II) chloride complexes (aryl = 2,6-Me2Ph Fe1, 2,6-Et2Ph Fe2, 2,6-i-Pr2Ph Fe3, 2,4,6-Me3Ph Fe4, and 2,6-Et2-4-MePh Fe5), incorporating fused six- and seven-membered carbocyclic rings and appended with a remote para-phenyl group, were readily prepared. The molecular structures of Fe2 and Fe3 emphasize the variation in fused ring size and the skewed disposition of the para-phenyl group present in the N′,N,N″-ligand support. Upon

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Gowri Krishnan, Shamala, Fei Ling Pua, Kumaran Palanisamy, and Sharifah Nabihah. "Preparation of Oil Palm EFB Derived Solid Acid Catalyst for Esterification Reaction: Effect of Calcination Temperature." Key Engineering Materials 701 (July 2016): 117–21. http://dx.doi.org/10.4028/www.scientific.net/kem.701.117.

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Oil palm empty fruit bunch (EFB) is one of the palm biomass produced in abundance after oil extraction in Malaysia. This study was focused to utilize this waste biomass as a beneficial raw materials. EFB was used to prepare new solid acid catalyst for biodiesel production. EFB was converted into solid catalyst via direct impregnation method and it was used to catalyse esterification of oleic acid. Transition metal sulfide salt, Fe2(SO4)3 was impregnated on EFB fibres. Effect of different calcination temperature was studied on the properties of catalyst. The result shows that Fe2(SO4)3 based so

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Boscá, Lisardo, and Antonio Castrillo. "Nitric oxide, vascular function and exercise." Biochemist 34, no. 3 (2012): 28–32. http://dx.doi.org/10.1042/bio03403028.

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NO (nitric oxide) is a diffusible gas molecule produced intracellularly by three distinct nitric oxide synthase (NOS) enzymes that are highly conserved in mammalian species. The NOS enzymes are haemcontaining proteins that catalyse a fiveelectron oxidation process of the guanidino nitrogen of arginine and in the presence of O2. NOS activity is, in fact, a tandem of two consecutive reactions: a reductase step catalysed by a moiety of NOS homologous with the cytochrome P450 reductase, including the NADPH and flavin nucleotide cofactorbinding domains, and an oxygenase step coupling the reduction

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Rusconi, Brigida, and Gilbert Greub. "Discovery of catalases in members of the Chlamydiales order." Journal of Bacteriology 195, no. 16 (2013): 3543–51. https://doi.org/10.1128/JB.00563-13.

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Catalase is an important virulence factor for survival in macrophages and other phagocytic cells. In Chlamydiaceae, no catalase had been described so far. With the sequencing and annotation of the full genomes of Chlamydia-related bacteria, the presence of different catalase-encoding genes has been documented. However, their distribution in the Chlamydiales order and the functionality of these catalases remain unknown. Phylogeny of chlamydial catalases was inferred using MrBayes, maximum likelihood, and maximum parsimony algorithms, allowing the description of three clade 3 and two clade 2 cat

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Rozprawy doktorskie na temat "Catalyse de fer"

Rangheard, Claudine. "Oligomérisation de l'éthylène par les complexes du fer." Lyon 1, 2008. http://www.theses.fr/2008LYO10332.

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Vers la fin des années 90, les systèmes à base de fer associés à des ligands azotés de type diimines ou bis(imino)pyridines ont été décrits comme précurseurs de catalyseurs pour la polymérisation et /ou l'oligomérisation des oléfines. Ces catalyseurs présentent de nombreux avantages de par leur coût, leur facilité de préparation et de manipulation et leur impact environnemental négligeable. De plus, ils offrent la possibilité de pouvoir contrôler leur activité et leur sélectivité pour l'oligomérisation grâce à la modularité de l'architecture de leur ligand. Nous reportons ici l'étude de la réa

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Wei, Duo. "Iron, manganese and rhenium-catalyzed (de)hydrogenation and hydroelementation reactions." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S105.

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L’objectif de ce travail doctoral a été de développer de nouvelles méthodes éco-compatibles pour réaliser efficacement des réactions de (dé)hydrogénation et d’hydroélémentation catalysées par des catalyseurs bien définis de fer, de manganèse et également de rhénium. La première partie de ce travail porte sur le développement des premiers exemples de réaction de borylation de dérivés styrènes et acétyléniques terminaux avec le pinacolborane via une réaction d’activation de liaison C-H catalysée par des systèmes à base de Fe(PMe3)4 ou de Fe(OTf)2/ DABCO. Dans une seconde partie, des complexes de

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Calmus, Laurent. "Catalyse au fer : synthèse de 2H-chromènes, synthèse de métachromines." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066397.

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La mise au point de nouvelles méthodes de synthèse permettant d'accéder à des produits biologiquement actifs en utilisant réactifs peu onéreux dans des conditions respectueuses de l'environnement est un enjeu majeur. Le motif 2H-chromène est présent dans un grand nombre de molécules naturelles, et notamment dans plusieurs métachromines. Les métachromines sont des méroterpénoïdes naturels possédant des propriétés biologiques intéressantes. Notre étude s'est portée sur le développement d'une méthode de synthèse permettant d'accéder à des 2H-chromènes hautement fonctionnalisés par une réaction de

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Guérin, Nicolas. "Fonctionnalisation du chrysotile avec du fer pour fins de catalyse." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25608/25608.pdf.

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Trehoux, Alexandre. "Synthèse de complexes binucléaires de fer pour activation réductrice du dioxygène : vers de nouveaux catalyseurs d'oxydation bio-inspirés." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS052/document.

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Ces travaux décrivent la synthèse et l'étude de la réactivité de complexes binucléaires à fer, développés dans le but de mimer l'activité catalytique d'enzymes binucléaires à fer telles que la méthane monooxygénase soluble. Nous avons synthétisé et caractérisé plusieurs complexes binucléaires à fer(III), possédant différents types de groupements (électro-donneurs, électro-attracteurs, donneurs de liaison hydrogène) dans leur seconde sphère de coordination, de façon symétrique ou dissymétrique. Nous avons étudié l'influence de la seconde sphère de coordination de ces différents complexes sur le

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Ahr, Mathieu. "Réactions d'homocouplage de composés organomagnésiens aromatiques en présence de sels de fer." Cergy-Pontoise, 2004. http://www.theses.fr/2004CERG0207.

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Une nouvelle réaction d'homocouplage d'organomagnésiens aromatiques a été développée. Elle est effectuée en présence de sels de fer et d'un halogénure organique qui joue le rôle d'oxydant. Un mécanisme a été proposé et discuté. L'utilisation de 1,2-dihalogénoéthanes comme oxydants a permis d'effectuer la réaction d'homocouplage de phénylmagnésiens substitués en para, méta ou ortho par divers groupes fonctionnels (méthyle, méthoxy, fluoro, diméthylamino, carbéthoxy, cyano) pour conduire aux biphényles correspondants avec de bons rendements. La 3,3'-bipyridine et la 2,2'-difluoro-3,3'-dicarbétho

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Lepori, Clément. "Complexes de fer(II) et de cobalt(II) de basse coordinance : synthèses, caractérisations et applications en réaction d’hydroamination des alcènes." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS509.

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Les motifs azotés sont présents dans de nombreuses molécules d’intérêts pharmaceutiques. Les méthodes de synthèses traditionnelles de ces motifs vont, par exemple, de la substitution nucléophile d’amines sur des halogénures d’alkyles à de l’amination réductrice des composés carbonylés. Ces méthodes, bien qu’efficaces, nécessitent néanmoins des quantités stœchiométriques de réactifs pour être appliquées et génèrent souvent des quantités importantes de déchets. Un des challenges de la chimie organique moderne consiste à développer de nouvelles méthodes de synthèses de ces motifs plus économiques

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Jollet, Véronique. "Complexes de fer bio inspirés pour la catalyse d'oxydation : systèmes homogènes et supportés." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00915279.

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Certaines métalloenzymes catalysent l'oxydation de petites molécules organiques, dans des conditions douces (par activation du dioxygène à température et pression ambiante). Ce travail a pour but d'améliorer l'utilisation et l'efficacité catalytique des complexes de fer mimant cette activité.D'abord, par fonctionnalisation du ligand, un des complexes les plus efficaces pour catalyser l'oxydation de substrats aromatiques par H2O2, a pu être greffé dans des mésopores de silice. Ce matériau est utilisé comme support de catalyseur, en raison de sa grande surface spécifique et de sa chimie de surfa

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Nicolas, Irène. "Cyclopropanation asymétrique catalysée par les métalloporphyrines (fer et ruthénium)." Rennes 1, 2009. http://www.theses.fr/2009REN1S129.

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The development of environmentally benign reactions is an important goal in synthetic organic chemistry and chemical engineering. However, catalytic enantioselective reactions using transition-metal complexes in protic or aqueous solvents are within limited ranges. Since we previously observed that some ruthenium porphyrin carbene complexes were stable in presence of hydrophilic solvent, such as methanol, we are interested in exploring the possibility that these complexes may also catalyze cyclopropanation in water and alcohols. Accordingly, we reveal herein that not only ruthenium porphyrins

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Thibon, Aurore. "Complexes de fer non-hémiques, modèles de catalyseurs d’oxydation biologiques. Synthèses et caractérisations de complexes fer oxo et fer hydroperoxo. Utilisation en catalyse d’hydroxylation d’hydrocarbures aromatiques." Paris 11, 2007. http://www.theses.fr/2007PA112152.

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Ce travail s’inscrit dans le cadre de la modélisation fonctionnelle de monooxygénases à fer capables d’hydroxyler les hydrocarbures aromatiques. La synthèse de différents ligands hexadentes de type amino-pyridine et d’un ligand de type macrocyclique a permis l’obtention et la caractérisation de nouveaux complexes de Fe(II) qui sont le point de départ de ce travail. L’action de divers oxydants, tels que des peroxydes, mCPBA ou le dioxygène sur ces précurseurs de Fe(II) a été étudiée à différentes températures et dans différents solvants. Des intermédiaires de type Fe(IV)O, Fe(III)OOH et Fe(III)

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Książki na temat "Catalyse de fer"

National Symposium on Catalysis (8th 1987 Sindri, India). Challenges in catalysis science and technology: Proceedings of the 8th National Symposium on Catalysis held at Sindri during Feb. 12-14, 1987 under the joint auspices of Projects and Development India Limited and Catalysis Society of India. Projects & Development India, 1987.

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National Symposium on Catalysis (8th 1987 Sindri, India). Challenges in catalysis science and technology: Proceedings of the 8th National Symposium on Catalysis held at Sindri during Feb. 12-14, 19 87, under the joint auspices of Projects and Development India Limited and Catalysis Society of India. Projects & Development India Ltd., 1987.

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Meunier, Florent. Réactions d'oxydation catalysées par des complexes de ruthénium et de fer. A.N.R.T. Université Pierre Mendès France Grenoble 2, 1986.

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Patricia, Peppin, McCreary Bruce D, Stanton Barbara, Queen's University (Kingston, Ont.). Developmental Consulting Program., and Queen's University (Kingston, Ont.). Division of Developmental Disabilities., eds. Catalysts for university education in developmental disabilities. Developmental Consulting Program, Queen's University, 2001.

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National Institutes of Health (U.S.). NCRR: A catalyst for discovery : a plan for the National Center for Research Resources. NCRR, National Institutes of Health, 1994.

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Center, International Fertilizer Development, and CATALIST (Project), eds. Proposition pour l'amelioration des recommandations pour la gestion integree de la fertilite des sols (GIFS) sur la base des resultats des tests participatifs et des demonstrations de fertilisation du projet CATALIST. IDFC, 2012.

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Gaitanidis, Ioannis, Luis Fernando Bernardi Junqueira, Morrow Avery, and Sangyun Han. Therapy, Spirituality, and East Asian Imaginaries. Amsterdam University Press, 2025. https://doi.org/10.5117/9789048559015.

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In the context of modern global exchanges, an imagined and essentialised notion of ‘East Asia’ has served as both a source of inspiration and a catalyst for new connections, extending beyond the geographic boundaries of China, Japan, and Korea. This volume explores the global circulation of practices, technologies, and ideas identified as ‘East Asian’ in alternative therapies and spiritual practices since the 1970s. Case studies range from the incorporation of traditional Chinese medicine into Brazilian naturopathy to self-development seminars promoting Korean national identity. Rather than fo

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Ferando, Christina. Exhibiting Antonio Canova. Amsterdam University Press, 2023. http://dx.doi.org/10.5117/9789463724098.

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Exhibiting Antonio Canova: Display and the Transformation of Sculptural Theory argues that the display of Canova’s sculptures in the late eighteenth and early nineteenth centuries acted as a catalyst for discourse across a broad range of subjects. By enshrining his marble figures alongside plaster casts of ancient works, bathing them in candlelight, staining and waxing their surfaces, and even setting them in motion on rotating bases, Canova engaged viewers intellectually, physically, and emotionally. These displays inspired discussions on topics as diverse as originality and artistic producti

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Davis, Burtron H. Fischer-Tropsch Synthesis, Catalysts, and Catalysis: Advances and Applications. Taylor & Francis Group, 2016.

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Davis, Burtron H. Fischer-Tropsch Synthesis, Catalysts, and Catalysis: Advances and Applications. Taylor & Francis Group, 2016.

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Części książek na temat "Catalyse de fer"

Duan, Lunbo, and Lin Li. "Oxygen Carrier Aided Gasification (OCAG)." In Oxygen-Carrier-Aided Combustion Technology for Solid-Fuel Conversion in Fluidized Bed. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9127-1_5.

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AbstractGasification is regarded as an effective clean utilization technology of solid fuel, which can convert the chemical energy of solid fuel into gaseous fuel. However, the primary gas products contain not only the essential gas products, but also an unacceptable amount of tars, which will cause operational problems such as blockage of downstream equipment during gasification. Catalysts are often used after the gasifier to catalyze tar in the pyrolysis product gas. However, the activity ofcatalysts generally declines over time, as they will be poisoned by prolonged exposure to an atmospher

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Terpstra, Marten. "Various Compositions Mainly Used as Catalysts or Catalyst Components." In Materials for Refractories and Ceramics. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4325-4_8.

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Knözinger, H. "Metal Clusters and Particles as Catalyst Precursors and Catalysts." In Cluster Models for Surface and Bulk Phenomena. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4684-6021-6_12.

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Bobrov, N. N., and V. N. Parmon. "Rapid Catalyst Testing in The Boreskov Institute of Catalysis." In Principles and Methods for Accelerated Catalyst Design and Testing. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0554-8_10.

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Zhang, Huanjun, Guohua Chen, and Detlef W. Bahnemann. "Environmental Photo(electro)catalysis: Fundamental Principles and Applied Catalysts." In Electrochemistry for the Environment. Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-68318-8_16.

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Arvidsson, Niklas. "Overall conclusions this far." In People as Care Catalysts. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119207818.ch8.

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Hermanns, Ellen, Jens Hasenjäger, and Birgit Drießen-Hölscher. "PEG-Modified Ligands for Catalysis and Catalyst Recycling in Thermoregulated Systems." In Regulated Systems for Multiphase Catalysis. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/3418_2006_061.

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Berman, Carol W. "Fear: The Catalyst That Breaks Through Denial." In Surviving Dementia. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-35102-5_2.

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Schmiermund, Torsten. "Catalysis." In The Chemistry Knowledge for Firefighters. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64423-2_36.

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Figueiredo, Jośe Lúís, and Manuel Fernando R. Pereira. "Carbon as Catalyst." In Carbon Materials for Catalysis. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470403709.ch6.

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Streszczenia konferencji na temat "Catalyse de fer"

Sutton, Nathaniel, and Sean Sears. "Nitrite-Based Oxidative Chemical Treatments for Polythionic Acid SCC Mitigation." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21145.

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Abstract Reactive metal sulfides introduce safety and reliability risks to hydroprocessing (and other) refinery units during outages. Self-heating or pyrophoric catalysts are a concern, as is stress corrosion cracking of sensitized stainless-steel equipment open to air. A nitrite-based aqueous treatment has been developed and deployed in the field, which addresses both catalyst pyrophoricity and polythionic acid (PTA) SCC of equipment. This paper will present case studies where refineries have relied solely upon the nitrite-based oxidizing solution for PTASCC mitigation. Prior published labora

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Salvino, C., D. DeJarnette, and M. Momayez. "Mining Lunar Helium-3: The Financial Catalyst for Moon Mission." In Nuclear and Emerging Technologies for Space (NETS 2025). American Nuclear Society, 2025. https://doi.org/10.13182/xyz-46353.

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af Ugglas, Samuel, Pascal Finker, Anders Ersson, Dawei Yao, Lars J. Pettersson, and Henrik Kusar. "Impact of Reduced Catalytic Activity on Passive Regeneration of Catalyzed Diesel Particulate Filters." In KSAE/SAE 2025 Powertrain, Energy & Lubricants Conference & Exhibition. SAE International, 2025. https://doi.org/10.4271/2025-01-0185.

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<div class="section abstract"><div class="htmlview paragraph">Oxidation catalysts can greatly improve the regeneration efficiency of diesel particulate filters (DPF) by providing sufficient levels of NO<sub>2</sub> for low-temperature soot oxidation. As for other automotive catalysts, catalyzed DPFs are subject to aging effects, resulting in decreased performance of the NO oxidation reaction. The life span of DPFs generally only considers the elevated back pressure as a consequence of the accumulation of ash. However, with reduced catalytic activity and impaired functio

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Kang, Inyong, and Joongmyeon Bae. "Study on Autothermal Reforming of Diesel." In ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2005. http://dx.doi.org/10.1115/fuelcell2005-74063.

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Diesel is one of the best hydrogen storage systems, which has very high volumetric density [kg H2/m3] (>100) and gravimetric density [%H2] (>15). Several catalysts were selected for diesel reforming. 3 catalysts (Pt on gadolinium doped ceria, Rh and Ru on the same support, Patent for catalyst formulation of Argonne National Laboratory in U.S.A) and 2 commercial catalysts (FCR-HC14 and FCR-HC35, Su¨d-Chemie, Inc.) were used to reform diesel. Pt catalyst showed the best performance. Effects of operating conditions such as temperature, O2/C and H2O/C on ATR (autothermal reforming) were inve

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Lobato, J., P. Can˜izares, M. A. Rodrigo, J. J. Linares, and B. Sa´nchez-Rivera. "Testing Different Catalysts for a Vapor-Fed PBI-Based Direct Ethanol Fuel Cell." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85055.

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With the aim of improving the ethanol oxidation in fuel cells, researchers have developed numerous catalysts to break up the C-C bond. Most of the tests have been carried out at low temperature, using Nafion membrane as electrolyte. The cell performance of the Direct Ethanol Fuel Cells (DEFCs) at low temperature is still far from its industrial application. To improve the DEFC power density, high temperature operation (150–200 °C) has been suggested to promote the complete oxidation of ethanol. Thus, three different catalysts (Pt-Ru (1:1), Pt-Sn (1:1) and Pt-Sn-Ru (1:1:0.3), all of them suppor

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Gabrič, Maja, Florian Maximilian Harth, Brigita Hočevar, Miha Grilc, and Blaž Likozar. "Rhenium Catalyzed Production of Bio-Based Acrylates From Glyceric Acid." In TBMCE, International Conference on Technologies & Business Models for Circular Economy. University of Maribor Press, 2025. https://doi.org/10.18690/um.fkkt.1.2025.1.

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Bio-based glyceric acid, an oxidation product of glycerol, was converted into acrylic acid and its esters, crucial polymer precursors, using a new catalytic approach in a sustainable manner. Avoiding gaseous H2 or dangerous chemicals, the crucial step is Re-catalyzed deoxydehydration (DODH) in an alcoholic medium. In addition to being a solvent and hydrogen donor, alcohol also forms protective ester groups with acrylic and glyceric acids. This study examined several catalysts, alcohols, the presence of H2, and temperatures. Acrylic acid and methyl acrylate were produced in 72 hours with a 65%

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Wu, Quanwen, Wenhua Luo, Daqiao Meng, Jinchun Bao, and Jingwen Ba. "High Efficient Detritiation Catalysts for Fusion Safety." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81269.

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Tritium is indispensable to the fusion reactor engineering, and it must be seriously defended because of its radioactivity and permeability. The method of catalytic oxidation and absorption is the most widely used process for tritium cleanup so far, in which detritiation catalyst is of great importance. The poor stability caused by the agglomeration of noble metal limits the life of detritiation catalysts. Here, Anti–Ostwald Ripening is used to prepare single-atom detritiation catalysts S-Pt/Ce0.7Zr0.3O2 for tritium (HT, DT and T2) oxidation. Single-atom dispersed Pt ensures the catalytic acti

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Prikhodko, Vitaly Y., Josh A. Pihl, Samuel A. Lewis, and James E. Parks. "Effect of Hydrocarbon Emissions From PCCI-Type Combustion on the Performance of Selective Catalytic Reduction Catalysts." In ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/icef2011-60129.

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Core samples cut from full size commercial Fe- and Cu-zeolite SCR catalysts were exposed to a slipstream of raw engine exhaust from a 1.9-liter 4-cylinder diesel engine operating in conventional and PCCI combustion modes. Subsequently, the NOx reduction performance of the exposed catalysts was evaluated on a laboratory bench-reactor fed with simulated exhaust. The Fe-zeolite NOx conversion efficiency was significantly degraded, especially at low temperatures (<250°C), after the catalyst was exposed to the engine exhaust. The degradation of the Fe-zeolite performance was similar for both com

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Jayasuriya, Jeevan, Arturo Manrique, Reza Fakhrai, Jan Fredriksson, and Torsten Fransson. "Experimental Investigations of Catalytic Combustion for High-Pressure Gas Turbine Applications." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90986.

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Catalytic combustion has proven to be a suitable alternative to conventional flame combustion in gas turbines for achieving Ultra-Low Emission levels (ULE). In the process of catalytic combustion, it is possible to achieve a stable combustion of lean fuel/air mixtures which results in reduced combustion temperature in the combustor. The ultimate result is that almost no thermal-NOx is formed and the emissions of carbon monoxide and hydrocarbon emissions are reduced to single-digit limits. Successful development of catalytic combustion technology would lead to reducing pollutant emissions in ga

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Djimasbe, Richard, Mikhail A. Varfolomeev, Eduard A. Galiullin, et al. "Development and Assisted Injection of Sub- And Supercritical Water by the Oil-Soluble Catalysts for the Intensification of Upgrading Process of the Bazhenov Oil Shale and Production of Synthetic Oil." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/215485-ms.

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Abstract In this paper, an EOR technology was proposed, including a development of oil soluble catalytic compositions and their injection with sub- and supercritical water (sub- and SCW) for in-situ hydrothermal upgrading of oil shale and intensifies the generation of synthetic oil. The experiments were carried with the oil shale sample from the Bazhenov formation (Russia) with 9.13% of the total organic carbon (TOC) which 83% composed of kerogen, at the sub- and SCW conditions of 300-400°C taking into account of the reservoir pressure ≥ 250 bars and with time (6-24h) in the presence and absen

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Raporty organizacyjne na temat "Catalyse de fer"

Olsen, Daniel, Bryan Hackleman, and Rodrigo Bauza Tellechaea. PR-179-16207-R01 Oxidation Catalyst Degradation on a 2-Stroke Lean-Burn NG Engine - Washing. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011586.

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Oxidation catalysts are often utilized to reduce carbon monoxide, formaldehyde, and volatile organic compounds in order to meet emissions regulations for large bore natural gas engines. These catalysts degrade over time and need to be replaced or regenerated to maintain emissions compliance. This work evaluates the effectiveness of catalyst regeneration, or catalyst washing. The evaluation is performed by utilizing field and laboratory slip streams combined with catalyst module performance (reduction efficiency) measurements and catalyst material surface analysis to quantify catalyst poisons.

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Stevens and Olsen. PR-179-12214-R01 CO Sensor Experimental Evaluation for Catalyst Health Monitoring. Pipeline Research Council International, Inc. (PRCI), 2014. http://dx.doi.org/10.55274/r0010827.

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Oxidation catalysts and three-way catalysts can be used to reduce the amount of CO present in engine exhaust. For 2-stroke lean-burn engines, the oxidation catalyst degrades over time be-cause of the buildup of poisons such as sulfur, zinc, phosphorous, and calcium. Three-way cata-lysts used with stoichiometric engines also degrade over time. Emissions analyzers are often used to evaluate the degradation of oxidation catalysts and three-way catalysts, but it can be very time consuming and expensive. Ideally, a simple sensor system would be beneficial for operating companies to determine if the

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Badrinarayanan and Olsen. PR-179-11201-R01 Performance Evaluation of Multiple Oxidation Catalysts on a Lean Burn Natural Gas Engine. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010772.

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Two-way catalysts or oxidation catalysts are the common after-treatment systems used on lean burn natural gas engines to reduce CO, VOCs and formaldehyde emissions. The study evaluates the performance of oxidation catalysts from commercial vendors for varying catalyst temperature and space velocity. For this study, a part of the exhaust from a Waukesha VGF-18 GL lean burn natural gas engine was flowed through a catalyst slipstream system to assess the performance of the oxidation catalysts. The slipstream is used to reduce the size of the catalysts and to allow precise control of temperature a

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Olsen and Neuner. PR-179-12207-R01 Performance Measurements of Oxidation Catalyst on an Exhaust Slipstream. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010800.

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Oxidation catalysts are effective at reducing CO, formaldehyde, and VOCs as long as the catalyst temperature is above the light-off temperature for each species. It is important to understand the effects of temperature and space velocity on regulated species in order to effectively apply oxidation catalyst technology to lean burn engines, in particular 2-stroke engines that typically have lower exhaust temperatures. Various catalysts were tested on an exhaust slipstream coupled to a 4-stroke lean-burn engine which allows tests to be conducted at different temperatures and flow rates. The effec

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Defoort, Willson, and Olsen. L51849 Performance Evaluation of Exhaust Catalysts During the Initial Aging on Large Industrial Engines. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0011213.

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An investigation of catalyst performance during the initial aging process, providing insight into the deactivation rate of the catalyst and assisting in predicting the operational lifetime of the catalyst was preformed. The information gained through the test program provides a mechanism to assist in developing new technologies geared at reducing engine emission while providing improvements in efficiency, reliability, and operability for the aging industrial reciprocating engine fleet. Two natural gas lean burn engines, a 2-stroke, large bore slow speed and a 4-stroke medium bore medium speed,

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Wongkasemjit, Sujitra. Treatment of dye containing in textile wastewater using TS-1, Ti-MCM-41 and Bismuth Titanate Catalysts : final report. Chulalongkorn University, 2007. https://doi.org/10.58837/chula.res.2007.94.

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This research was to study the photocatalytic activity of three different metal oxide catalysts, namely MCM-41, TS-1, and bismuth titanate (Bi[subscript 12]TiO[subscript 20]) in the reactive black 5 dye solution and the waste water obtained from a dye industry. These catalysts were synthesized using silatrane, titanium glycolate and bismuth nitrate precursors. The degradation process was first studied in the reactive black 5 dye model. The parameters in this study were pH, amounts of H[subscript 2]O[subscript 2] and Ti-loading in zeolite structure while fixing the organic dye at 40 ppm. At pH3

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Swanson, Dr Larry, and Christopher Samuelson. PR-362-06208-R01 Evaluation of Byproduct Emissions from Gas Turbine SCR Catalyst. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010978.

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The primary objective of the test program was to evaluate byproduct emissions at steady state and transient operating conditions for two commercially available SCR catalysts used in gas turbine applications. Both NOX removal efficiency and ammonia slip behavior were also examined to validate expected catalyst trends and activity. Even though the study replicated expected field catalyst process conditions as well as possible (e.g., flue gas temperatures, space velocities, and inlet species concentrations), the data and results are from pilot-scale testing only, and consequently may differ from

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Bauza, Rodrigo, and Daniel Olsen. PR-179-20200-R01 Improved Catalyst Regeneration Process to Increase Poison Removal. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012106.

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In this work, the details of catalyst poison deposition are studied, and new catalyst restoration methods are explored. Lubrication oil makes its way through the combustion chamber and into the exhaust system, depositing poisons onto the catalyst and degrading catalyst performance. To estimate the degradation rate of the units and to find the best restoration method, two identical alumina-platinum oxidation catalysts were used in a dual setting, combining a field degradation engine and a laboratory testing engine. In order to find the best restoration process, the combination of both baking an

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Chavadej, Sumaeth, Thammanoon Sreethawong, Anothai Tansuwan, and Thanapoom Suwannabart. Ethylene oxide reaction over Ag catalysts in low-temperature corona discharge. Chulalongkorn University, 2009. https://doi.org/10.58837/chula.res.2009.80.

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Part 1: The epoxidation of ethylene over different catalysts - namely Ag/(low-surface-area, LSA)-Al2O3, Ag/(high-surface-area, HSA)γ-Al2O3, and Au-Ag/(HSA)γ-Al2O3 - in a low-temperature corona discharge system was investigated. In a comparison among the studied catalysts, the Ag/(LSA)-Al2O3 catalyst was found to offer the highest selectivity for ethylene oxide, as well as the lowest selectivity for carbon dioxide and carbon monoxide. The selectivity for ethylene oxide increased with increasing applied voltage, while the selectivity for ethylene oxide remained unchanged when the frequency was

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Wongkasemjit, Sujitra. Novel synthesis study of high surface area silica : final report. Chulalongkorn University, 2002. https://doi.org/10.58837/chula.res.2002.71.

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The sol-gel transition of tetra-coordinated spirosilicate via hydrolysis and condensation under acidic and basic conditions is examined to elucidate the effect of catalyst, reaction time and temperature on the properties of obtained gel. The main advantage of this process is the low temperature employed, producing a solid network with a high specific surface area. FTIR spectroscopy and TGA analysis were used to characterize the formation of siloxane bonds (Si-O-Si). It is found that spirosilicate can be hydrolyzed under both acid and base catalyzed conditions. The condensation rate to silicate

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