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Journal articles on the topic 'Palladium'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Raphael Cabral, A., and B. Lehmann. "A two-stage process of native palladium formation at low temperatures: evidence from a palladian gold nugget (Gongo Soco iron ore mine, Minas Gerais, Brazil)." Mineralogical Magazine 67, no. 3 (2003): 453–63. http://dx.doi.org/10.1180/0026461036730110.

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AbstractNative palladium is rare and occurs in oxidizing environments (hematite stability field) and consistently has very low contents of other metals. On the other hand, gold may contain significant amounts of alloyed palladium. A nugget of palladian gold, obtained from a specularite-rich auriferous vein (‘jacutinga’) of the Gongo Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, allows the definition of a paragenetic sequence of native palladium formation. The cm-sized nugget is brecciated and consists of fragments of palladian gold [Au0.79Pd0.09Cu0.07Ag0.04Hg0.01] with inclusions o

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2

Parunov, Vitaliy Anatol’evich, M. A. Kareva, S. D. Tykochinskiy, and I. Yu Lebedenko. "THE DEVELOPMENT OF A NEW METAL ALLOY BASED ON PALLADIUM WITHIN THE FRAMEWORK OF PRACTICAL IMPLEMENTATION OF THE CONCEPT OF DEVELOPMENT OF THE DOMESTIC DENTAL MATERIALS SCIENCE." Russian Journal of Dentistry 21, no. 3 (2017): 126–28. http://dx.doi.org/10.18821/1728-2802-2017-21-3-126-128.

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The article shows the creation of a new Russian base alloy of palladium for metal-ceramic dental prostheses “Palladini UNI” puteam comprehensive analysis of the influence of alloying elements on the phase structure of the palladium alloys, physical and mechanical properties and coefficient of thermal linear expansion.

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Parunov, Vitaliy Anatol’evich, M. A. Kareva, D. S. Tykochinskiy, and I. Yu Lebedenko. "Development of a new metal alloy based on palladium within the framework of practical implementation of the concept of development of the domestic dental materials science." Russian Journal of Dentistry 21, no. 1 (2017): 7–10. http://dx.doi.org/10.18821/1728-28022017;21(1):7-10.

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The article shows the creation of the new Russian alloy based on palladium for metal-ceramic dental prostheses "Palladini UNI puteam comprehensive analysis of the influence of alloying elements on the phase structure of the palladium alloys, physical and mechanical properties and coefficient of thermal linear expansion.

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4

Narasimhan, D., T. S. Sunilkumar, E. V. S. S. K. Babu, and N. Krishna Rao. "Occurrence of Palladian Melonite in Jaduguda Uranium Deposit, Singhbhum Shear Zone, Bihar." Journal Geological Society of India 51, no. 6 (1998): 759–60. http://dx.doi.org/10.17491/jgsi/1998/510605.

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5

Mammadova, S. R. "EXTRACTION OF PALLADIUM." Azerbaijan Chemical Journal, no. 3 (September 28, 2021): 67–71. http://dx.doi.org/10.32737/0005-2531-2021-3-67-71.

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It is known that a series of organic compounds containing in molecule SH-, NH- qroups, including halogens, carboxylic acids and their derivatives, have the ability to form the innercomplex compounds under certain conditions. These compounds permit to carry out the extraction in acidic medium, that prevents the of process hydrolysis. They are not dissolved in water but are soluble in various solvents and form colored solutions and so may be used as an extractants. The main purpose of this paper is the study of palladium extraction ability for chlorinated naphthenic acids (CNA) synthesited in la

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6

Brisotto, Mariangela, Marcello Gelfi, Claudia Rinaldi, and Laura Eleonora Depero. "Study of Microstrain and Stress in Non-Planar Palladium Membranes for Hydrogen Separation." Advanced Materials Research 996 (August 2014): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amr.996.27.

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Palladiums tubular membranes are developed to operate up to 400 °C, for the synthesis of H2 and for the separation of CO2 in Water Gas Shift (WGS) processes and reforming gas of methane [. Palladium has FCC lattice that allows the separation of hydrogen from carbon dioxide through a solution-diffusion mechanism [. To ensure high selectivity in the separation process, the functional Pd layer on the porous substrate of the membranes must have a microstructure with low defects and free from residual stresses [.MicroXRD measurements were performed to evaluate the effect of the stress-relief heat t

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7

Vdovenkov, Frol, Eugenia Bedova, and Oleg Kozaderov. "Phase Transformation during the Selective Dissolution of a Cu85Pd15 Alloy: Nucleation Kinetics and Contribution to Electrocatalytic Activity." Materials 16, no. 4 (2023): 1606. http://dx.doi.org/10.3390/ma16041606.

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This study determined the critical parameters for the morphological development of the electrode surface (the critical potential and the critical charge) during anodic selective dissolution of a Cu–Pd alloy with a volume concentration of 15 at.% palladium. When the critical values were exceeded, a phase transition occurred with the formation of palladium’s own phase. Chronoamperometry aided in the determination of the partial rates of copper ionization and phase transformation of palladium under overcritical selective dissolution conditions. The study determined that the formation of a new pal

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8

Murphy, Michael. "Palladium and palladium alloys." Metal Finishing 95, no. 2 (1997): 27. http://dx.doi.org/10.1016/s0026-0576(97)94208-2.

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9

Liubymenko, O. M., and O. A. Shtepa. "Restoration of palladium membranes after contact with hydrogen for hydrogen-oxygen fuel cells." Journal of electrical and power engineering 31, no. 2 (2024): 76–81. http://dx.doi.org/10.31474/2074-2630-2024-2-76-81.

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Annotation. Studying the deformations of palladium membranes under the influence of hydrogen, which is a relevant issue for hydrogen energy and the nuclear industry. The mechanisms of palladium membrane shape change due to hydrogen penetration and the formation of temporary gradient alloys such as α-PdHn are consid-ered. Experiments were conducted using a hydrogen-vacuum installation, where the processes of membrane satu-ration and degassing were studied at temperatures from 100°C to 360°C and hydrogen pressures from 0.01 MPa to 2.5 MPa. It was established that the change in the shape of the m

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10

Sudibya, Akhmad, and Indah Widyaningsih. "Dew Formation and Anaerobiosis in Anaerobic Jars." Asian Journal of Medicine and Health 21, no. 10 (2023): 348–57. http://dx.doi.org/10.9734/ajmah/2023/v21i10912.

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Introduction: This study aimed to prove whether the palladium catalyst affects the dew formation time in the anaerobic cover and whether anaerobiosis can be achieved without a palladium catalyst. Materials and Methods: This research is a laboratory experimental study with a non-randomized control group design. In this study, replication was carried out. The amount of replication used is 10. The palladium catalyst was used in 10 experiments, whereas it was not used in ten other experiments. Results: The growths of Pseudomonas aeruginosa, Clostridium tetani, and Bacteroides fragilis

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11

Ning, Yuantao, Zhengfen Yang, and Huaizhi Zhao. "Platinum Recovery by Palladium Alloy Catchment Gauzes in Nitric Acid Plants." Platinum Metals Review 40, no. 2 (1996): 80–87. http://dx.doi.org/10.1595/003214096x4028087.

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Since the introduction of palladium-gold catchment gauzes for the recovery of the platinum lost from the catalyst gauzes used in the manufacture of nitric acid, the mechanism by which these high palladium content alloys catch and recover the platinum has been of interest to both researchers and manufacturers, alike. Using analyses of the surface chemical species which form on palladium, both in flowing oxygen and during the ammonia oxidation reaction, this paper describes how the surface of the palladium, at temperatures above 800°C, is a multilayer structure with the bright palladium metal su

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12

Kitiwan, Mettaya, and Duangduen Atong. "Characteristic of Palladium Coated Tubular Alumina Composite Membrane for Hydrogen Separation." Key Engineering Materials 434-435 (March 2010): 510–13. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.510.

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The palladium membrane has been developed for high temperature separation of hydrogen from other syngas molecules. In this study, tubular α-alumina substrate was used as a support for increase mechanical strength for thin palladium membrane. Prior depositing of palladium film, a dip-coating of palladium nuclei was performed to cover the substrate. Afterward, surface of activated support was modified with a thin intermediate layer for improving adhesion between support and Pd membrane. Electroless plating of dense palladium membrane was achieved from the plating bath containing EDTA stabilized

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13

Wahlberg, J. E., and A. S. Boman. "Cross-reactivity to palladium and nickel studied in the guinea pig." Acta Dermato-Venereologica 72, no. 2 (1992): 95–97. http://dx.doi.org/10.2340/00015555729597.

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In recent years there have been several reports on concomitant patch test reactions to palladium and nickel, which belong to the same group in the periodic table. Exposure to palladium mainly takes place via dental alloys and jewelry. However, the clinical relevance of simultaneous reactivity to these metals is unknown. To elucidate the question of cross-reactivity, guinea pigs were induced with palladium or nickel and simultaneously challenged with palladium and nickel. Animals sensitized to palladium according to the guinea pig maximization test method (GPMT) or to a new method by van Hoogst

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14

Umegaki, Tetsuo, Yusuke Yamada, Atsushi Ueda, Nobuhiro Kuriyama, and Qiang Xu. "Hydrogen Production via Steam Reforming of Ethyl Alcohol over Palladium/Indium Oxide Catalyst." Research Letters in Physical Chemistry 2009 (July 28, 2009): 1–4. http://dx.doi.org/10.1155/2009/631815.

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We report the synergetic effect between palladium and indium oxide on hydrogen production in the steam reforming reaction of ethyl alcohol. The palladium/indium oxide catalyst shows higher hydrogen production rate than indium oxide and palladium. Palladium/indium oxide affords ketonization of ethyl alcohol with negligible by-product carbon monoxide, while indium oxide mainly affords dehydration of ethyl alcohol, and palladium affords decomposition of ethyl alcohol with large amount of by-product carbon monoxide. The catalytic feature of palladium/indium oxide can be ascribed to the formation o

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15

Phipps, Robert, Paul Türtscher, and Holly Davis. "Palladium-Catalysed Cross-Coupling of Benzylammonium Salts with Boronic Acids under Mild Conditions." Synthesis 50, no. 04 (2017): 793–802. http://dx.doi.org/10.1055/s-0036-1588548.

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Herein, we give a full account of the development of the palladium-catalysed cross-coupling of benzylammonium salts with boronic acids. A range of benzylamine-derived quaternary ammonium salts can be coupled with boronic acids under relatively mild conditions. Our optimization has identified ligands that can be used to chemoselectively cross-couple at the ammonium in the presence of chlorides. We demonstrate that intramolecular palladium-catalysed C–H activation is also a viable pathway for the putative benzyl-Pd(II) intermediate obtained upon oxidative addition and have optimised this to obt

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16

Perić, Tanja S., and Slobodan M. Janković. "Cardiotoxicity of Palladium Compounds / Kardiotoksičnost Jedinjenja Paladijuma." Journal of Medical Biochemistry 32, no. 1 (2013): 20–25. http://dx.doi.org/10.2478/v10011-012-0010-5.

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SummaryPrevious studies have shown that palladium has toxic effects on the kidney and liver, leads to deterioration of the general condition of animals, and could cause allergy in animals and humans. Considering the limited data about the influence of palladium on the cardiovascular system, the aim of our study was to evaluate the effects of palladium on the heart from available published data, and to compare the toxicity of inorganic and organic palladium compounds. Relevant studies for our review were identified from PubMed and Scopus databases. The search terms included »palladium «, »palla

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17

Li, Yuanjiao, Janine Mauzeroll, and Samuel Charles Perry. "Fabrication of a Palladium Hydride pH Microelectrode with an Extended Lifetime." ECS Meeting Abstracts MA2023-02, no. 62 (2023): 2931. http://dx.doi.org/10.1149/ma2023-02622931mtgabs.

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Stable miniaturized pH microelectrodes are crucial in exploring localized pH changes, but most suffer from instability and short lifetimes. Palladium hydride in a mixer phase has been reported to measure the solution pH taking advantage of the interaction between the alloyed hydrogen atoms and hydrogen ions in the solution. However, with the escape of the hydrogen atoms from the palladium lattice, the palladium hydride will transition to single phase and become invalid for pH measurement. The duration of the mixer-phase palladium hydride is even shorter as the sensor is made small. A method to

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18

Ning, Yuantao. "Alloying and Strengthening Effects of Rare Earths in Palladium." Platinum Metals Review 46, no. 3 (2002): 108–15. http://dx.doi.org/10.1595/003214002x463108115.

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The effect of adding small amounts of rare earth elements to Palladium is to strengthen the Palladium. These strengthening effects are discussed here, based on known phase diagrams of Palladium-rare earths, Palladium-rare earth alloying behaviour and atomic (or ionic) size effects. The Solid solubilities of the rare earths in Palladium, transition temperatures of various intermediate phases and eutectic temperature in these systems are influenced by the ionic (or atomic) size of the rare earth elements. A parameter, Hs, the product of the relative difference in atomic weights and the relative

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19

Lee, Jong Ho, Choong Soo Chi, and Han Jun Oh. "Synthesis and Kinetic of Palladium Nanotube Using Polymer Compound." Key Engineering Materials 543 (March 2013): 137–40. http://dx.doi.org/10.4028/www.scientific.net/kem.543.137.

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The palladium nanotube was synthesized by template wetting and annealing process. And the activation energy for formation of the palladium metal from palladium acetate was evaluated. The activation energy was evaluated by Friedman method and the values were in the ranges between 65 and 98 kJ/mol. The diameters and lengths of synthesized palladium nanotubes ranged from 130 to 190 nm and from 2 to 3 μm, respectively. The palladium nanotubes can be successfully fabricated by the template wetting process, and the crystalline structure is confirmed by XRD. From DSC results the thermal decomposition

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20

Yin, Yanru, Changna Wen, Ning Ma, et al. "Sodium Alginate-Assisted Synthesis of PdAg Bimetallic Nanoparticles and their Enhanced Activity for Electrooxidation of Ethanol." Nano 14, no. 09 (2019): 1950120. http://dx.doi.org/10.1142/s1793292019501200.

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Palladium and palladium-silver bimetallic nanocrystals have been synthesized hydrothermally by using environmental-friendly sodium alginate as the stabilizer and reducing agent. The pure palladium nanoparticles were spherical-like possibly due to the principle of the lowest surface energy, however, the formation of bimetallic palladium-silver nanoparticles was much more complicated, which was thinner and more irregular nanostructures than pure palladium nanoparticles. Electrochemical measurements showed that the electrocatalytic activity toward ethanol oxidation was increased first with the in

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21

Kintrup, Jürgen, and Harald Züchner. "XPS Investigations on Solid and Vacuum Deposited, Oxidized and Non-oxidized Palladium." Zeitschrift für Naturforschung A 50, no. 4-5 (1995): 381–87. http://dx.doi.org/10.1515/zna-1995-4-510.

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Abstract X-ray photoelectron spectroscopy (XPS) has been carried out to study the reaction of differently prepared palladium samples (solid and film Pd) with atmospheric oxygen. A careful curve fitting of the measured Pd-3d5/2 peak allows to separate the Pd-3d5/2 peak for Pd in surface PdO from the dominant Pd-3d5/2 peak of the non-oxidized bulk palladium and to determine the chemical shift of the "oxidized" Pa line with high accuracy. Differences in the chemical shifts for the surface PdO on solid and film palladium are explained by a different charging caused by the photoelectric effect in X

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22

Boriskin, O. I., S. N. Larin, G. A. Nuzhdin, and I. V. Murav’eva. "THE PALLADIUM COMPLEXES DURING THERMAL DECOMPOSITION PHASE COMPOSITION INVESTIGATION." Kontrol'. Diagnostika, no. 290 (August 2022): 44–48. http://dx.doi.org/10.14489/td.2022.08.pp.044-048.

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In palladium refining technologies, as well as in some analytical procedures, complexes of bivalent palladium with diimines, amines, oximes, thiourea, and other compounds are used. In the technologies used, complex compounds of palladium are subjected to thermal decomposition, during which metallic palladium is formed. The precious metals market is seeing a rapid rise in the price of palladium on the back of a rapid increase in demand for it. It has been experimentally shown that active decomposition of dichlorodiamminepalladium Pd(NH3)2Cl2 and dimethylglyoximpalladium (C4H7N2O2)2Pd occurs at

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23

Craft, Andrew. "A Case Study Approach: Summary of Some Results on the Effects of Hydrogen Exposure on the Mechanical Properties of Palladium and the Alloy Systems Pd1−xMx, M = Ag, Cu, Mn; x = 5 − 0.25." Hydrogen 4, no. 2 (2023): 237–56. http://dx.doi.org/10.3390/hydrogen4020017.

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Selected results of investigations focused on the changes to some mechanical properties of palladium and several palladium-based alloys caused by exposure to hydrogen have been collected and presented. The findings indicate that the mechanical properties of pure palladium are highly susceptible to alteration upon exposure to hydrogen. In the cases of alloying palladium with silver and copper, the alloys, as compared to palladium, appear to resist changes to mechanical properties. In the case of alloying palladium with manganese, the interesting order–disorder phenomenon plays an important role

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Olivo, Gema Ribeiro, and Michel Gauthier. "Palladium minerals from the Cauê iron mine, Itabira District, Minas Gerais, Brazil." Mineralogical Magazine 59, no. 396 (1995): 455–63. http://dx.doi.org/10.1180/minmag.1995.059.396.07.

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AbstractPalladium-bearing minerals from the Cauê iron mine, Itabira District, Minas Gerais, Brazil, are found in gold-rich jacutinga, a hydrothermally-altered Lake Superior-type carbonate-bearing oxide facies iron-formation. Palladium occurs as: native palladium with trace contents of Au, Fe and Cu; palladseite ((Pd,Cu,Hg)17Se15), which was found in the core of a grain of palladium; palladium–copper oxide ((Pd,Cu)O); and arsenopalladinite (Pd8(As,Sb)3), with inclusions of palladium–copper oxide. The palladium and palladium–copper oxide grains are coated with films of gold and commonly do not e

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Yoshimura, Akihiro, Shunta Tochigi, and Yasunari Matsuno. "Fundamental Study of Palladium Recycling Using “Dry Aqua Regia” Considering the Recovery from Spent Auto-catalyst." Journal of Sustainable Metallurgy 7, no. 1 (2021): 266–76. http://dx.doi.org/10.1007/s40831-020-00335-x.

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AbstractIn this research, a recycling process for palladium using “dry aqua regia,” which consists of iron(III) chloride–potassium chloride, was proposed. Palladium was dissolved in “dry aqua regia,” and the dissolved palladium was recovered by leaching with potassium chloride solution with added ammonium chloride and nitric acid. Palladium was almost completely dissolved in 3 h at 600 K, and the recovery ratio of dissolved palladium was up to 80%. In addition, the dissolution of palladium in coexistence with platinum and the dissolution of platinum-palladium alloy by “dry aqua regia” were als

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Vancea, Cosmin, Maria Mihailescu, Adina Negrea, et al. "Batch and Fixed-Bed Column Studies on Palladium Recovery from Acidic Solution by Modified MgSiO3." International Journal of Environmental Research and Public Health 17, no. 24 (2020): 9500. http://dx.doi.org/10.3390/ijerph17249500.

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Effective recovery of palladium ions from acidic waste solutions is important due to palladium’s intensive usage as a catalyst for different industrial processes and to the high price paid for its production from natural resources. In this paper, we test the ability of a new adsorbent, MgSiO3 functionalized by impregnation with DL-cysteine (cys), for palladium ion recovery from waste solutions. The Brunauer–Emmett–Teller (BET) surface area analysis, Barrett–Joyner–Halenda (BJH) pore size and volume analysis, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy and Fou

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27

Yang, Yong Sheng, and Feng Zhao. "Promoting Effect of Chemical Self-Assembled Polyaniline Nanofibers and Electro-Polymerized Polyaniline in Formic Acid Electro-Oxidizing Reaction." Materials Science Forum 852 (April 2016): 646–52. http://dx.doi.org/10.4028/www.scientific.net/msf.852.646.

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In order to enhance catalytic properties of palladium or gold/palladium alloy on polyaniline surface, highly pure PANI nanofibers doped with phosphoric acid were synthesized via chemical self-assembled method. Its general morphology was observed by scanning electron microscopy analysis. The deposition of palladium or gold/palladium alloy on PANI nanofibers was accomplished through reducing reaction of PdCl2 or PdCl2/HAuCl4 in aqueous solution by NaBH4. Pd/PANI nanofibers or Au/Pd/PANI nanofibers have been evaluated for catalytic activity toward formic acid oxidation reaction. Palladium/PANI na

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Stromnova, Tatiana A. "Palladium(+1) Carbonyl Clusters in the Catalytic Oxidation of Unsaturated Compounds." Platinum Metals Review 47, no. 1 (2003): 20–27. http://dx.doi.org/10.1595/003214003x4712027.

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Some palladium carbonyl clusters containing the palladium in the (+1) formal oxidation state, and derivatives of these clusters investigated in our laboratories are examined in this paper. In particular, letranuclear carbonyl carboxylates of palladium are discussed as a model of key intermediates in various processes, including CO oxidation by a palladium catalyst with molecular oxygen as the oxidant. A second type of cluster, a palladium cationic cluster which contains N-donor ligands acts as a catalyst precursor for processes such as exhaust gas purification. A third type of palladium carbon

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Leniart, Andrzej, Barbara Burnat, Mariola Brycht, and Sławomira Skrzypek. "ROLA PALLADU W ELEKTROCHEMII: WŁAŚCIWOŚCI, PROCESY ELEKTROOSADZANIA I ZASTOSOWANIE." Wiadomości Chemiczne 78, no. 7 (2024): 987–1024. https://doi.org/10.53584/wiadchem.2024.07.10.

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Palladium is an investment metal that occurs extremely rarely, yet demand for this metal grows each year. Due to its unique properties, it plays a crucial role in many industrial sectors and everyday life. It is widely used in the automotive industry for catalytic converters, in the electronics sector for integrated circuits, in the energy sector as an electrode material in fuel cells, and for energy storage (hydrogen). Among many methods of obtaining palladium materials, electrochemistry holds great potential. By selecting appropriate parameters of electrodeposition process, it is possible to

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Zhao, Ji Shou, X. M. Zhang, and J. H. Dai. "Study on Dissolution Different of Metal Palladium Powder and Place." Advanced Materials Research 1033-1034 (October 2014): 1283–87. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1283.

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The chemistry of the dissolution of Palladium in pressure-cyanide has not received considerable attention. At room temperature and pressures, the reaction between sodium cyanide and Palladium does not occur because of poor kinetics. However, at elevated temperatures between 100-160 °C, Palladium can be leached by sodium cyanide like the reaction of gold. A research study has been undertaken to develop the fundamentals of a method for the direct dissolution of Palladium In this work, the dissolution of Palladium powder and place were measured in pressure clear cyanide solution. The cyanide leac

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Polignano, Maria Luisa, Isabella Mica, Agostino Brambilla, et al. "Detection and Prevention of Palladium Contamination in Silicon Devices." Solid State Phenomena 242 (October 2015): 252–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.242.252.

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In this work we report the results of a set of experiments carried out to assess the ability of recombination lifetime measurements for the detection of palladium contamination in silicon. Palladium is found to be a very effective recombination center, so recombination lifetime measurements are a very sensitive method to detect palladium in silicon. The surface segregation of palladium was monitored by the reduction of its recombination activity in the silicon volume. The palladium segregation at the wafer surface was checked by selective etching, and by Transmission Electron Microscopy (TEM)

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D’souza, Melwin Diego, Poonam Dwivedi, Rama Lokhande, Tushar Anvekar, and Andrew Joseph D’souza. "Simple, Sensitive, and Easy to use Method for Determination of Palladium Content in Palladium Acetate Using Flame Atomic Absorption Spectrophotometry." Oriental Journal Of Chemistry 37, no. 4 (2021): 880–84. http://dx.doi.org/10.13005/ojc/370415.

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A simple, sensitive, and easy to use method for the determination of palladium content in palladium acetate was developed using homogeneous acid digestion of palladium acetate followed by atomic absorption spectrometry (AAS) analysis. Parameters affecting the extraction efficiency of palladium during digestion of palladium acetate were investigated and optimized. The palladium content was measured at 244.7 nm by atomic absorption (AA) spectrometers on PinAAcle™ 900 series with an air-acetylene flame. The linear calibration graph was observed in the range of 2.5-15 ppm with a limit of detection

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33

Canty, Allan J. "The +IV Oxidation State in Organopalladium Chemistry." Platinum Metals Review 37, no. 1 (1993): 2–7. http://dx.doi.org/10.1595/003214093x37127.

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The organometallic chemistry of palladium is dominated by the +II oxidation state, and the chemistry of complexes containing simple organic groups bonded to palladium in the +IV oxidation state has developed only recently. Organic synthesis and catalytic reactions that may involve undetected palladium(IV) intermediates have been suggested frequently, and the new oxidation state +IV chemistry provides some support for these proposals, and gives encouragement for the development of new systems involving palladium(IV). The chemistry of organopalladium(IV) is reviewed here, and possible catalytic

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34

Tanaka, Katsunori, and Katsumasa Fujiki. "Bis[N,N′-(2-indanolyl)]-1,5-diazacyclooctane as Unique Metal Ligand: Self-Assembly of Palladium Nanoparticles and Catalytic Reactivity on C–C Bond Formation." Synthesis 50, no. 05 (2017): 1097–104. http://dx.doi.org/10.1055/s-0036-1590956.

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A previously unreported 1,5-diazacyclooctane-palladium(II) complex was synthesized using bis[N,N′-(2-indanolyl)]-1,5-diazacyclooctane, which was readily prepared via a novel [4+4] homocyclization of the unsaturated imine intermediate generated from acrolein and 1-amino-2-indanol. Interestingly, the 1,5-diazacyclooctane-palladium(II) complex self-assembled to form palladium nanoparticles. This approach readily provided palladium nanoparticles simply by heating a mixture of palladium(II) acetate and bis[N,N′-(2-indanolyl)]-1,4-diazacyclooctane in dichloroethane at mild temperatures. The 1,5-diaz

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35

Niu, Ben, Yin Wei та Min Shi. "Recent advances in annulation reactions based on zwitterionic π-allyl palladium and propargyl palladium complexes". Organic Chemistry Frontiers 8, № 13 (2021): 3475–501. http://dx.doi.org/10.1039/d1qo00273b.

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Carbocyclic and heterocyclic compounds could be constructed through the palladium-catalyzed annulation reactions of zwitterionic π-allyl palladium or propargyl palladium complexes with unsaturated electrophiles.

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Park, S. J., S. Bhargava, E. T. Bender, G. G. Chase, and R. D. Ramsier. "Palladium nanoparticles supported by alumina nanofibers synthesized by electrospinning." Journal of Materials Research 23, no. 5 (2008): 1193–96. http://dx.doi.org/10.1557/jmr.2008.0173.

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Palladium nanoparticles supported by alumina nanofibers have been successfully synthesized by electrospinning using palladium chloride incorporated into a solution of polyvinyl pyrrolidone and aluminum acetate. Palladium agglomerate sizes and the surface morphology of the electrospun nanofibers were determined by transmission electron microscopy. Palladium nanoparticles appeared to be well dispersed within the electrospun nanofiber structure. X-ray diffraction, x-ray photoelectron spectroscopy, and Raman scattering spectroscopy techniques were used to identify the crystalline form and distingu

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37

Bayeshov A.B.,, Gaipov T.E.,, and Bayeshova A.K.,. "FORMATION OF NANO-AND ULTRAFINE PALLADIUM POWDERS IN THE PRESENCE OF «RED-OX»SYSTEM«TITANIUM (III) - TITANIUM (IV)»." SERIES CHEMISTRY AND TECHNOLOGY 5, no. 443 (2020): 21–27. http://dx.doi.org/10.32014/2020.2518-1491.76.

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The results of studies on the processes of obtaining ultra - and nanodispersed palladium powders from sulphate solutions by a combined chemical and electrochemical method in the presence of a "red-ox" system of titanium (III) - titanium (IV) are presented. It has been shown that when a titanium trivalent sulphate solution is added to a solution containing palladium (II) ions, palladium ions are immediately reduced to elemental state to form a nanodispersed powder. The completeness of the above-mentioned oxidizing-reducing reactions is established on the basis of calculating the equilibrium con

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38

Zimmermann, Pauline, Önder Tekinalp, Øivind Wilhelmsen, Liyuan Deng, and Odne Stokke Burheim. "Enhancing Palladium Recovery Rates in Industrial Residual Solutions through Electrodialysis." Membranes 13, no. 11 (2023): 859. http://dx.doi.org/10.3390/membranes13110859.

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Palladium is a vital commodity in the industry. To guarantee a stable supply in the future, it is imperative to adopt more effective recycling practices. In this proof-of-concept study, we explore the potential of electrodialysis to enhance the palladium concentration in a residual solution of palladium recycling, thus promoting higher recovery rates. Experiments were conducted using an industrial hydrochloric acid solution containing around 1000 mg/L of palladium, with a pH below 1. Two sets of membranes, Selemion AMVN/CMVN and Fujifilm Type 12 AEM/CEM, were tested at two current levels. The

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CHOHAN, M. H., FARID A. KHAWJA, AZIZ UR REHAMN, M. ZULFIQAR, and M. TAHIR. "SYNTHESIS AND CONDUCTIVITY OF PALLADIUM POLYMETHACRYLATE." Modern Physics Letters B 05, no. 02 (1991): 125–34. http://dx.doi.org/10.1142/s0217984991000162.

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Synthesis of palladium polymethacrylate and its dc conductivity have been investigated. Infrared spectra of the palladium acetate and palladium polymethacrylate are taken and compared. The palladium polymethacrylate spectrum indicates that Pd is not attached with —COOH, instead it forms a complex with carboxylic group. Measurements indicate that conduction in this material cannot be attributed to a single conduction process.

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Yurkov, Gleb, Yury Koksharov, Alexander Fionov, et al. "Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties." Polymers 14, no. 18 (2022): 3795. http://dx.doi.org/10.3390/polym14183795.

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Composite nanomaterials have been prepared through thermal decomposition of palladium diacetate. The composite contains palladium nanoparticles embedded in high-pressure polyethylene. The materials were studied by a number of different physico-chemical methods, such as transmission electron microscopy, X-ray diffraction, X-ray absorption spectroscopy, electron paramagnetic resonance, and EXAFS. The average size of the nanoparticles is 7.0 ± 0.5 nm. It is shown that with the decrease of metal content in the polymer matrix the average size of nanoparticles decreased from 7 to 6 nm, and the coord

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Che Soh, Siti Kamilah, and Mustaffa Shamsuddin. "Tetradentate N2O2Chelated Palladium(II) Complexes: Synthesis, Characterization, and Catalytic Activity towards Mizoroki-Heck Reaction of Aryl Bromides." Journal of Chemistry 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/632315.

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Four air and moisture-stable palladium(II)-Schiff base complexes,N,N′-bis(α-methylsalicylidene)propane-1,3-diamine palladium(II) (2a),N,N′-bis(4-methyl-α-methylsalicylidene)propane-1,3-diamine palladium(II) (2b),N,N′-bis(3,5-di-tert-butylsalicylidene)propane-1,3-diamine palladium(II) (2c), andN,N′-bis(4-methoxy-salicylidene)propane-1,3-diamine palladium(II) (2d), have been successfully synthesised and characterised by CHN elemental analyses and conventional spectroscopic methods. These complexes were investigated as catalysts in the phosphine-free Mizoroki-Heck cross-coupling reactions of aryl

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Suboch, Arina N., and Olga Y. Podyacheva. "Pd Catalysts Supported on Bamboo-Like Nitrogen-Doped Carbon Nanotubes for Hydrogen Production." Energies 14, no. 5 (2021): 1501. http://dx.doi.org/10.3390/en14051501.

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Bamboo-like nitrogen-doped carbon nanotubes (N-CNTs) were used to synthesize supported palladium catalysts (0.2–2 wt.%) for hydrogen production via gas phase formic acid decomposition. The beneficial role of nitrogen centers of N-CNTs in the formation of active isolated palladium ions and dispersed palladium nanoparticles was demonstrated. It was shown that although the surface layers of N-CNTs are enriched with graphitic nitrogen, palladium first interacts with accessible pyridinic centers of N-CNTs to form stable isolated palladium ions. The activity of Pd/N-CNTs catalysts is determined by t

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Zhirov, Gregory I., and Mariya V. Goltsova. "Hydrogen-phase naklep as a result of single isothermal hydride transformations." Journal of the Belarusian State University. Physics, no. 1 (January 27, 2022): 65–74. http://dx.doi.org/10.33581/2520-2243-2022-1-65-74.

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Hydrogen treatment of metallic materials is a promising area of controlled hydrogen action on metals and alloys in order to impart special properties to them. In this work, the changes in the mechanical properties of palladium during single hydride transformations, which are initiated in the initially non-nakleped palladium hydride, have been experimentally studied. Were investigated wire palladium samples with a purity of 99.98 %, a diameter of 0.5 mm and a length of 165 mm. Samples for research were preliminarily subjected to hydrogen treatment, and then mechanical tests were carried out. Th

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Zhang, Dong. "Determination of Pd(II) in Street Dust and Water Samples by FAAS after Preconcentration with Dimethylglyoxime-Anchored Organobentonite." Advanced Materials Research 433-440 (January 2012): 24–28. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.24.

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A preconcentration method based on the adsorption of palladium-dimethylglyoxime -anchored organobentonite (DMG-bentonite) for the determination of palladium at trace levels by flame atomic absorption spectrometry (AAS) has been developed. The optimum experimental parameters for the adsorption and preconcentration of the palladium, such as pH value of medium, contact time, eluent and coexisting ion, have been investigated. The results showed that the palladium ion could be quantitatively retained by the DMG-bentonite in the pH range of 3–5 using citric acid/citrate buffer, the adsorption time w

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Chawla, Neha, Amir Chamaani, Meer Safa, Marcus Herndon, and Bilal El-Zahab. "Mechanism of Ionic Impedance Growth for Palladium-Containing CNT Electrodes in Lithium-Oxygen Battery Electrodes and its Contribution to Battery Failure." Batteries 5, no. 1 (2019): 15. http://dx.doi.org/10.3390/batteries5010015.

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The electrochemical oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) and on CNT (carbon nanotube) cathode with a palladium catalyst, palladium-coated CNT (PC-CNT), and palladium-filled CNT (PF-CNT) are assessed in an ether-based electrolyte solution in order to fabricate a lithium-oxygen battery with high specific energy. The electrochemical properties of the CNT cathodes were studied using electrochemical impedance spectroscopy (EIS). Palladium-filled cathodes displayed better performance as compared to the palladium-coated ones due to the shielding of the catalysts. The me

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RAVAT, VILAS, and PREETI AGHALAYAM. "PALLDIUM SUPPORTED MCM-41 MESOPOROUS MOLECULAR SIEVES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC TEST FOR THE REDUCTION OF NO BY CO." International Journal of Nanoscience 10, no. 04n05 (2011): 1051–56. http://dx.doi.org/10.1142/s0219581x11008563.

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Palladium supported MCM-41 molecular sieves with Si/Pd (molar) ratios of 400, 200, 100 and 50 were synthesized by hydrothermal method. All catalysts characterized by various analytical and spectroscopic techniques, viz, XRD, N2 sorption, TEM, DRUV-VIS, Raman. XRD at low angle and high angle studies suggest that the substitution of palladium and presence of palladium oxide phase in the silicate tetrahedral framework structure of MCM-41. TEM investigations confirm the highly ordered cubic structure with irregular distribution of palladium nanoparticles on surface PdMCM-41 . DRUV-VIS and Raman sp

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47

OVERMAN, LARRY. "PALLADIUM." Chemical & Engineering News 81, no. 36 (2003): 116. http://dx.doi.org/10.1021/cen-v081n036.p116.

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48

Mohyuddin, Faisal. "Palladium." Pleiades: Literature in Context 40, no. 1 (2020): 116–19. http://dx.doi.org/10.1353/plc.2020.0039.

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49

Kakkar, Ashok K., and Muhammad S. Khan. "Palladium." Coordination Chemistry Reviews 124, no. 1-2 (1993): 1–40. http://dx.doi.org/10.1016/0010-8545(93)80002-m.

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Keep, Ann K. "Palladium." Coordination Chemistry Reviews 127, no. 1-2 (1993): 99–129. http://dx.doi.org/10.1016/0010-8545(93)80056-b.

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