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Artykuły w czasopismach na temat "Palladium electrocatalyst"
Kryukov, Yu I., V. I. Lukovtsev, Elena Mikhailovna Petrenko i I. S. Khozyainova. "Electrochemical activity of the cathodes with platinum or platinum-palladium electrocatalysts for alkaline water electrolysis". Electrochemical Energetics 12, nr 1 (2012): 36–38. http://dx.doi.org/10.18500/1608-4039-2012-12-1-36-38.
Pełny tekst źródłaIpadeola, Adewale K., i Kenneth I. Ozoemena. "Alkaline water-splitting reactions over Pd/Co-MOF-derived carbon obtained via microwave-assisted synthesis". RSC Advances 10, nr 29 (2020): 17359–68. http://dx.doi.org/10.1039/d0ra02307h.
Pełny tekst źródłaSofian, Muhammad, Fatima Nasim, Hassan Ali i Muhammad Arif Nadeem. "Pronounced effect of yttrium oxide on the activity of Pd/rGO electrocatalyst for formic acid oxidation reaction". RSC Advances 13, nr 21 (2023): 14306–16. http://dx.doi.org/10.1039/d3ra01929b.
Pełny tekst źródłaZheng, Jun Sheng, Xin Sheng Zhang, Sun Wen, Ping Li, Chun An Ma i Wei Kang Yuan. "A Novel Non-Metal Oxygen Reduction Electrocatalyst Based on Platelet Carbon Nanofiber". Advanced Materials Research 132 (sierpień 2010): 264–70. http://dx.doi.org/10.4028/www.scientific.net/amr.132.264.
Pełny tekst źródłaYazdan-Abad, Mehdi Zareie, Meissam Noroozifar, Ali Reza Modarresi-Alam i Hamideh Saravani. "Correction: Palladium aerogel as a high-performance electrocatalyst for ethanol electro-oxidation in alkaline media". Journal of Materials Chemistry A 5, nr 25 (2017): 13228. http://dx.doi.org/10.1039/c7ta90123b.
Pełny tekst źródłaMansor, Muliani, Sharifah Najiha Timmiati, Wai Yin Wong, Azran Mohd Zainoodin, Kean Long Lim i Siti Kartom Kamarudin. "NiPd Supported on Mesostructured Silica Nanoparticle as Efficient Anode Electrocatalyst for Methanol Electrooxidation in Alkaline Media". Catalysts 10, nr 11 (25.10.2020): 1235. http://dx.doi.org/10.3390/catal10111235.
Pełny tekst źródłaChen, Jingguang G. "(Invited) Electrocatalytic Conversion of CO2 to Syngas with Controlled CO/H2 Ratios". ECS Meeting Abstracts MA2023-01, nr 37 (28.08.2023): 2161. http://dx.doi.org/10.1149/ma2023-01372161mtgabs.
Pełny tekst źródłaKabir, Sadia, Kenneth Lemire, Kateryna Artyushkova, Aaron Roy, Madeleine Odgaard, Debbie Schlueter, Alexandr Oshchepkov i in. "Platinum group metal-free NiMo hydrogen oxidation catalysts: high performance and durability in alkaline exchange membrane fuel cells". Journal of Materials Chemistry A 5, nr 46 (2017): 24433–43. http://dx.doi.org/10.1039/c7ta08718g.
Pełny tekst źródłaEskandrani, Areej A., Shimaa M. Ali i Hibah M. Al-Otaibi. "Study of the Oxygen Evolution Reaction at Strontium Palladium Perovskite Electrocatalyst in Acidic Medium". International Journal of Molecular Sciences 21, nr 11 (27.05.2020): 3785. http://dx.doi.org/10.3390/ijms21113785.
Pełny tekst źródłaVdovenkov, Frol, Eugenia Bedova i Oleg Kozaderov. "Phase Transformation during the Selective Dissolution of a Cu85Pd15 Alloy: Nucleation Kinetics and Contribution to Electrocatalytic Activity". Materials 16, nr 4 (15.02.2023): 1606. http://dx.doi.org/10.3390/ma16041606.
Pełny tekst źródłaRozprawy doktorskie na temat "Palladium electrocatalyst"
Beliaeva, Kristina. "Captage et conversion électrochimique du CO2 dans des liquides ioniques et des solvants eutectiques profonds avec des catalyseurs à base de Pd". Electronic Thesis or Diss., Université Grenoble Alpes, 2023. http://www.theses.fr/2023GRALI094.
Pełny tekst źródłaCarbon dioxide capture and utilization (CCU) is a way to decarbonize industrial sector. This technology provides a valorization of cheap carbon feedstock by its transformation to carbonaceous value-added chemicals. Multiple CO2 capture and utilization techniques exist to prevent the release of the greenhouse gas to the atmosphere. Here, we propose an integrated process of CO2 capture sequenced by electroconversion to C-based products in electrochemical cell. Electrochemical CO2 conversion is a promising method due to mild reaction conditions and possibility to power the reaction with electricity produced by renewable energy sources. This process necessitates the development of solvents capable to capture CO2 and to play a role of electrolyte during electrochemical reduction reaction. At the same time, efficient catalytic materials are vital for selective CO2 conversion to targeted product(s). The choice of capture solvent is usually based on CO2 capture ability, chemical and electrochemical stabilities, environmental issue and cost. Economically affordable deep eutectic solvent (DES) electrolytes seem to be promising candidates for CO2 capture and electroreduction because of good thermal and electrochemical stabilities, competitive CO2 uptake and large electrochemical windows. In this work, we focused on the development of novel deep eutectic solvent electrolytes for CO2 electroreduction with Pd-based electrocatalysts. Palladium proved its efficiency for selective conversion of carbon dioxide to C1 molecules such as carbon monoxide.During the thesis, we synthesized and electrochemically tested multiple DESs and Pd-based electrocatalysts with different morphologies and particle sizes to get more insights into reaction mechanism of CO2 electroreduction to C1 molecules. The implementation of different characterization techniques helped to study catalytic materials and DESs structures, to analyze gaseous and liquid reaction intermediates and products, and to understand main challenges of the studied system. Overall, this study is a one step forward the application of CO2ER (carbon dioxide electrochemical reduction) for valorisation of carbon dioxide and climate change mitigation
Straistari, Tatiana. "Synthesis and study of coordination compounds of cobalt, copper, palladium and nickel with polydentate ligands containing sulfur". Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4352.
Pełny tekst źródłaThis work focuses on the synthesis, the characterization and the catalytic evaluation in the reduction of protons into dihydrogen, of new complexes of Ni(II), Co(III), Cu(II) and Pd(II) based ligands Type thiosemicarbazone. The catalytically active species during the process of the proton reduction was studied by cyclic voltammetry and mechanisms were formulated on the basis quantum chemical calculation.The first chapter introduces the scientific context, the goals and the main objectives of this work. The second chapter concerns the synthesis and the characterization of the N2S2 ligands and their associated mononuclear complexes, Ni, Cu and Pd. The third chapter presents the synthesis and the characterization of binuclear Co and trinuclear Ni based on N2S2 ligand.Electrochemical studies of these complexes in DMF in the presence of a proton source (trifluoroacetic acid), allowed us to evaluate their catalytic efficiency. Our results show that Cu and Pd complexes have a specific irreversible wave for the reduction of protons, but decomposition is observed during electrolysis, which makes these uninteresting complexes for the reduction of protons.On the contrary, Ni and Co complexes showed an electrochemical stability and good catalytic performances. In particular, the new mononuclear Ni complex exhibits remarkable catalytic properties that rank it among the best catalysts for the reduction of protons reported in the literature. All this work provided a complete description of the electrochemical behavior of N2S2 thiosemicarbazone ligands complexed to transition metals. It allows considering future developments in improving the catalytic properties of these complexes
Tang, Yongan. "SYNTHESIS AND ELECTROCATALYSIS OF METAL NANOMATERIALS". Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1402313477.
Pełny tekst źródłaKlaas, Lutho Attwell. "Synthesis and characterization of binary Palladium based electrocatalysts towards alcohol oxidation for fuel cell application". University of the Western Cape, 2018. http://hdl.handle.net/11394/6448.
Pełny tekst źródłaThe anode catalyst is one of the important parts of the direct alcohol fuel cell (DAFC); it is responsible for the alcohol oxidation reaction (AOR) takes place at the anode side. Pd has been reported to have good alcohol oxidation reactions and good stability in alkaline solution. Better stability and activity has been reported for Pd alloyed catalysts when compared to Pd. Choosing a suitable alcohol also has an effect on the activity and stability of the catalyst. This study investigates the best catalyst with better AOR and the best stability and also looks at the better alcohol to use between glycerol and ethanol for the five in-house catalysts (20% Pd, PdNi, PdNiO, PdMn3O4 and PdMn3O4NiO on multi walled carbon nanotubes) using cyclic voltammetry (CV), linear sweep voltammetry (LSV), electrochemical impedance spectrometry (EIS) and chronoamperometry. HR-TEM and XRD techniques were used to determine the particle size and average particle size, respectively while EDS used to determine elemental composition and ICP was used to determine catalyst loading. It was observed from LSV that PdNiO was the most active catalyst for both ethanol and glycerol oxidation, and it was the most stable in ethanol while PdMn3O4 proved to be the most stable catalyst in glycerol observed using chronoamperometry. The best alcohol in this study was reported to be glycerol having given the highest current densities for all the inhouse catalysts compared to ethanol observed using LSV. From XRD and HR-TEM studies, particle sizes were in the range of 0.97 and 2.69 nm for XRD 3.44 and 7.20 nm for HR-TEM with a little agglomeration for PdMn3O4 and PdMn3O4NiO.
Sahin, Nihat Ege. "Réduction électrochimique du dioxyde de carbone sur des électrocatalyseurs à base de cuivre". Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2313/document.
Pełny tekst źródłaThe anthropogenic emissions of carbon dioxide (CO2) are the major cause of global warming. The selective CO2 reduction reaction (CO2RR) of has been proposed as a promising, convenient and efficient method for sustainable energy conversion systems. The reduction of CO2 to energetically valuable products requires the use of an appropriate electrode material. This study focuses on the preparation of Cu-based electrocatalysts supported on different types of carbon materials such as Vulcan XC-72R, mesoporous carbon CMK-3, mesoporous carbon FDU-15 and tannin based mesoporous carbon IS2M for the CO2RR under mild conditions. Besides, Vulcan XC-72R carbon supported bimetallic copper/palladium alloy materials were prepared for increasing the Faradaic yield. These copper-based catalysts were electrochemically characterized and preparative electrolyses set at constant potential were carried out in order to investigate the reduction products distribution and Faradaic yields as a function of the applied potential and catalyst loading. Chemicals such as HCOOH, CO and H2 issued from the CO2RR, were determined with in-situ and ex-situ complementary (electro)analytical and spectroscopic techniques. The significant difference in the product distribution is probably due to the ensemble (geometry and ligand) effects in the bimetallic CuPd materials, and textural structure of the supporting substrates. Selective CO2 to-HCOOH conversion has been successfully undertaken on Cu50Pd50/C with 62 % Faradaic efficiency
Parent, Loic. "Synthèse et caractérisation de nanoparticules métalliques hybrides à base de polyoxométallates : applications à l'électro-catalyse". Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLV010/document.
Pełny tekst źródłaPolyoxometalates (POMs) are known for their high diversification in terms of architectures and applications. POMs are used in this work for the synthesis of palladium nanoparticles since they act both as a reducer of metallic cation and as surfactant of nanoparticles.At first, we studied the electrochemical properties of several POMs belonging in the same family, then among this family, we chose to use two particular POMs to synthesize palladium nanoparticles. From an average size between 15 and 20 nm, these nanoparticles have been fully characterized and are stable over a month.Finally, various hybrid materials based on palladium and/or copper have been characterized by electrochemistry in solid state and their catalytic capacity towards the reduction of nitrate ions and dioxygene has been assessed
Straistari, Tatiana. "Synthesis and study of coordination compounds of cobalt, copper, palladium and nickel with polydentate ligands containing sulfur". Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4352.
Pełny tekst źródłaThis work focuses on the synthesis, the characterization and the catalytic evaluation in the reduction of protons into dihydrogen, of new complexes of Ni(II), Co(III), Cu(II) and Pd(II) based ligands Type thiosemicarbazone. The catalytically active species during the process of the proton reduction was studied by cyclic voltammetry and mechanisms were formulated on the basis quantum chemical calculation.The first chapter introduces the scientific context, the goals and the main objectives of this work. The second chapter concerns the synthesis and the characterization of the N2S2 ligands and their associated mononuclear complexes, Ni, Cu and Pd. The third chapter presents the synthesis and the characterization of binuclear Co and trinuclear Ni based on N2S2 ligand.Electrochemical studies of these complexes in DMF in the presence of a proton source (trifluoroacetic acid), allowed us to evaluate their catalytic efficiency. Our results show that Cu and Pd complexes have a specific irreversible wave for the reduction of protons, but decomposition is observed during electrolysis, which makes these uninteresting complexes for the reduction of protons.On the contrary, Ni and Co complexes showed an electrochemical stability and good catalytic performances. In particular, the new mononuclear Ni complex exhibits remarkable catalytic properties that rank it among the best catalysts for the reduction of protons reported in the literature. All this work provided a complete description of the electrochemical behavior of N2S2 thiosemicarbazone ligands complexed to transition metals. It allows considering future developments in improving the catalytic properties of these complexes
Chen, Yan Xin. "Nanostructured TiO2 Based Materials for electrocatalysis and Photoelectrocatalysis". Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8574.
Pełny tekst źródłaFossil energy sources are non-renewable being an irreplaceable endowment produced from millennia of biological and geological processes, which means that on the human time-scale they cannot be naturally regenerated and are only available in a finite amount on earth. Scientific and technological data concerning renewable fuels are exponentially growing and in parallel the governments are more and more attracted by these more sustainable energy sources. Overall, solar energy is the most abundant and easily available renewable resource which, however, has its own problems such as neither constantly available nor distributed equally over the surface of the globe. Hydrogen and various bio-fuels, such as bio-ethanol, biodiesel or biogas, have the potentiality to store the solar energy, playing a crucial role in the development of future renewable energy strategies. Nevertheless, as a general comment, it is very difficult and expensive to harness enough power from them to match the effectiveness of non-renewable resources. Thus, it is a big challenge to develop new and high efficient approach to improve the efficiency in production and use of these renewable resources. Nanotechnology is a key area that can help solving this issue. In fact, by using the tools offered by nanotechnology, it is possible to obtain tailored nanostructured catalytic materials that show remarkably better performance than that currently achievable even with state-of- the-art materials. The fields of catalysis, electrocatalysis, photocatalysis and photoelectron- catalysis are all examples of where nanotechnology is deeply impacting on current science, and in particular in energy related applications. The main focus of this PhD thesis is on nanotechnology applied to material science to enhance the performances of various on two important energy-related processes: namely the Fuel Cells (especially the Direct Alcohol Fuel Cell - DAFC) and the hydrogen production process. The H2 production processes include the electrochemical H2 production approach (the water electrolysis technique) and the photocatalytical H2 production approach (the photocatalytic decomposition of water into H2 technique). In the both the energy conversion processes, TiO2 nanotube arrays (TNTA) architectures were used as substrates and the Palladium (Pd) nanoparticles (NPs) were used as supported nanocatalysts. Therefore the most important results in this thesis are the design, realization, functional testing and characterization of supported Pd nanocatalysts on various TiO2 substrates with tailored and well-defined structures, in addition their use for energy-related applications, which are organized as follows: In the Chapter 1, the general principles of the fuel cells technique; the electrolysis technique; the TNTA substrate architecture and the principles of photocatalytic processes for H2 production are outlined or described in details. In addition, the development status and the preparation strategies of catalysts for the alcohol electrochemical oxidation are introduced in this chapter. In the chapter 2, an overview of the main characterization techniques is reported, all of which have been used in this thesis, in order to study the reactivity and the morphological and chemical properties of the samples. The aim of the present chapter is not that of providing exhaustive information about all the techniques. Rather, it is expected to furnish to the reader the main elements to better appreciate the results obtained and described in the following chapters of this thesis. Since the catalytic performance of the nanocatalysts can be finely turned by their shape, which determines surface atomic arrangement and coordination. In the chapter 3,we report a novel method of metal NPs modification, denoted as Electrochemical Milling and Faceting (ECMF), by which large supported Pd NPs (35 nm) of low-index facets supported on TNTA substrate can be milled into many small NPs (7 nm) with some HIF or high density of step atoms. By this approach, the catalytic activity of supported Pd NPs was enhanced by an order of magnitude to the ethanol electrooxidation, and was even 3 times higher than the highest value reported so far. This new approach to the synthesis of HIF-Pd NPs allows one to control metal loading, particle size and surface structure, independently from each other. Furthermore, in a practical catalytic system, such as the DAFC; the electrolysis system and the photocatalytical H2 production system, the electrochemical activity of the supported catalysts is not the only one parameter which needs to be concerned about, the other parameters for the whole test system’s establishment such as the selection and preparation of the substrate material also need to the carefully optimize. In the chapter 4, a new type of Ti network substrate with the TNTA on top was prepared and introduced into the DAFC test system and also used in the electrolysis and photocatalytical H2 production process. This kind of substrate solved the typical problems of the DAFC such as the fuel solution diffusion limitation and the stability of the as supported catalysts drop during the large current density discharge. It was also proved to be a good choice as the substrate for the Photocatalytic decomposition of alkaline ethanol aqueous into H2, which showed good performances of the H2 photochatalytic evolution. Chapter 5 is the conclusion of my PhD thesis. The results clearly demonstrate the novelty and the advantage of the present approach for the obtainment of active and stable electrochemical catalysts for the DAFC and the electrolysis system, and also represent an important step forward in the exploration of new active nanosystems for the conversion of solar light into storable chemical energy. All the findings greatly contributed to the development of catalytic materials for energy-related applications.
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Madduma-Liyanage, Kumudu C. "Reactions of Pt(IV) and Pd(IV) Complexes with Multi-Electron Substrates". University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1416570506.
Pełny tekst źródłaBRANDALISE, MICHELE. "Preparação e caracterização de eletrocatalisadores a base de paládio para oxidação eletroquímica de álcoois em meio alcalino". reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10137.
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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Części książek na temat "Palladium electrocatalyst"
Adzic, Radoslav, i Nebojsa Marinkovic. "Palladium Monolayer Electrocatalysts". W Platinum Monolayer Electrocatalysts, 157–60. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49566-4_10.
Pełny tekst źródłaShao, Minhua. "Palladium-Based Electrocatalysts for Oxygen Reduction Reaction". W Lecture Notes in Energy, 513–31. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4911-8_17.
Pełny tekst źródłaBianchini, C. "4 Palladium-Based Electrocatalysts for Alcohol Oxidation in Direct Alcohol Fuel Cells". W Modern Aspects of Electrochemistry, 203–53. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-5580-7_4.
Pełny tekst źródłaYoo, Sung Jong, i Yung-Eun Sung. "Design of Palladium-Based Alloy Electrocatalysts for Hydrogen Oxidation Reaction in Fuel Cells". W Fuel Cell Science, 111–46. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470630693.ch3.
Pełny tekst źródłaStreszczenia konferencji na temat "Palladium electrocatalyst"
Chen, Chun-Mao, Ming-Long Yeh, Chia-Yen Lee, Ya-Ting Chuang i Che-Hsin Lin. "A hydrogen evolution reaction determination system integrated high electrocatalyst palladium nano-electrode ensemble". W 2009 IEEE Sensors. IEEE, 2009. http://dx.doi.org/10.1109/icsens.2009.5398184.
Pełny tekst źródłaDe Oliveira Vigier, Karine, Christophe Coutanceau i Steve Baranton. "Electro-oxidation of glycerol and diglycerol in the presence of Pt or Pd-based electrocatalyst follows by the reductive amination of the products obtained". W 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/olba8004.
Pełny tekst źródłaWheeldon, I. R., J. C. Amphlett, M. Fowler, M. Hooper, R. F. Mann, B. A. Peppley i C. P. Thurgood. "Simulation of a 25 kW Steam-Methanol Fuel Processor/PEM Fuel Cell System". W ASME 2003 1st International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2003. http://dx.doi.org/10.1115/fuelcell2003-1738.
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