Thematische Bibliographien / Platinum metal

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Auswahl der wissenschaftlichen Literatur zum Thema „Platinum metal“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Platinum metal"

Dey, Sandip, und Vimal K. Jain. „Platinum Group Metal Chalcogenides“. Platinum Metals Review 48, Nr. 1 (01.01.2004): 16–29. http://dx.doi.org/10.1595/003214004x4811629.

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Some salientfeatures of platinum group metal compounds with sulfur, selenium or tellurium, known as chalcogenides, primarily focusing on binary compounds, are described here. Their structural patterns are rationalised in terms of common structural systems. Some applications of these compounds in catalysis and materials science are described, and emerging trends in designing molecular precursors for the syntheses of these materials are highlighted.

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Thompson, D. T. „Platinum Group Metal Fullerenes“. Platinum Metals Review 40, Nr. 1 (01.01.1996): 23–25. http://dx.doi.org/10.1595/003214096x4012325.

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Zhang, Ruiquan, Zhou Zhang, Qing Chen, Maocong Hu und Zhenhua Yao. „Revolutionizing Fuel Cell Efficiency with Non-Metallic Catalysts for Oxygen Reduction Reactions“. Global Environmental Engineers 9 (25.12.2022): 49–59. http://dx.doi.org/10.15377/2410-3624.2022.09.4.

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Platinum-based catalysts are widely used in oxygen reduction reactions, but platinum’s high cost and low reserves have restricted their sustainable development. With continuous in-depth research, it has been found that metal-free catalysts also have better catalytic activity in oxygen reduction reactions and have great potential for development due to the low cost and abundant reserves of metal-free catalysts, which has become a hot research direction. This paper reviews the application of metal-free catalysts in oxygen reduction reactions, including heteroatom-doped carbon-based catalysts, polymeric nitrogen catalysts, and emerging carbon catalysts. This work provides insights into developing non-platinum catalysts for oxygen reduction reactions by comparing the catalytic activity, selectivity, and prolonged stability.

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M.I.D. „Platinum Group Metal Coatings for Metal Hydrides“. Platinum Metals Review 34, Nr. 3 (01.07.1990): 142–43. http://dx.doi.org/10.1595/003214090x343142143.

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Uruga, Kazuyoshi, Kayo Sawada, Youichi Enokida und Ichiro Yamamoto. „ICONE15-10605 INFLUENCE OF THE SIZE OF COLLECTING METAL ON REMOVAL OF PLATINUM GROUP METALS FROM MOLTEN GLASS“. Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_329.

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Al-Allaf, Talal A. K., und Abeer Z. M. Sheet. „Platinum group metal Schiff base complexes—I. Platinum complexes“. Polyhedron 14, Nr. 2 (Januar 1995): 239–48. http://dx.doi.org/10.1016/0277-5387(94)00231-3.

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Edwards, C. „Metal Gurus [Materials science - platinum]“. Engineering & Technology 17, Nr. 5 (01.06.2022): 26–9. http://dx.doi.org/10.1049/et.2022.0510.

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Screen, By Thomas. „Platinum Group Metal Perovskite Catalysts“. Platinum Metals Review 51, Nr. 2 (01.04.2007): 87–92. http://dx.doi.org/10.1595/147106707x192645.

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Cheng, Kang, Luc C. J. Smulders, Lars I. van der Wal, Jogchum Oenema, Johannes D. Meeldijk, Nienke L. Visser, Glenn Sunley et al. „Maximizing noble metal utilization in solid catalysts by control of nanoparticle location“. Science 377, Nr. 6602 (08.07.2022): 204–8. http://dx.doi.org/10.1126/science.abn8289.

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Maximizing the utilization of noble metals is crucial for applications such as catalysis. We found that the minimum loading of platinum for optimal performance in the hydroconversion of n -alkanes for industrially relevant bifunctional catalysts could be reduced by a factor of 10 or more through the rational arranging of functional sites at the nanoscale. Intentionally depositing traces of platinum nanoparticles on the alumina binder or the outer surface of zeolite crystals, instead of inside the zeolite crystals, enhanced isomer selectivity without compromising activity. Separation between platinum and zeolite acid sites preserved the metal and acid functions by limiting micropore blockage by metal clusters and enhancing access to metal sites. Reduced platinum nanoparticles were more active than platinum single atoms strongly bonded to the alumina binder.

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Takase, Yoshiaki, Sachiko Nakano, Ei Yamaki und Osamu Kawashima. „Pulmonary arteriovenous malformation with metal allergy“. BMJ Case Reports 14, Nr. 3 (März 2021): e240275. http://dx.doi.org/10.1136/bcr-2020-240275.

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We present a rare case of single pulmonary arteriovenous malformation (PAVM) with multiple metal allergies, including for platinum. A 47-year-old woman presented to our hospital without any symptoms. Enhanced computed tomography showed a single PAVM in S6 of the right lung. Interviews prompted us to suspect a history of palmoplantar pustulosis associated with metal dental filling. Dermatology patch tests for metal allergy were positive for platinum, cobalt, tin and potassium dichromate. The first choice of treatment for PAVM is endovascular treatment using a metal coil. Since the coil is composed of platinum alloy, we performed partial lung resection for PAVM without metal implants. Although metal allergy is rare for endovascular treatment, it causes an additional stress of removal of causative metal or long-term steroidal treatment. Therefore, for single PAVM with multiple metal allergies to the implants, surgical treatment without metal implants should be considered.

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Dissertationen zum Thema "Platinum metal"

Trenholme, W. J. F. „Metal-organic frameworks for platinum group metal extraction“. Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/32795/.

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This Thesis describes the synthesis and characterisation of a variety of functionalised metal-organic frameworks (MOFs). These MOFs have been used for the extraction of platinum group metal (PGM) compounds from aqueous and organic solvents and for the storage of gases such as CO2, CH4 and the C2 hydrocarbons. Chapter 1 contains an introduction to PGM properties and uses with specific focus on the chemical properties which allow for separation of PGMs from base metal compounds and for separation between different PGM compounds. The synthesis and structure prediction of MOFs is then introduced, leading into an overview of the use of functionalised MOFs, especially those used for the encapsulation and extraction of metal ions from solution. General experimental techniques and details are described, as is the theory behind inductively coupled plasma optical emission spectrometry (ICP-OES), the most widely used analytical technique reported in this work. Chapter 2 describes the synthesis of chemically stable amine-functionalised Zr(IV) MOFs; UiO-68-NH2 and UiO-66-NH2, for extraction of PGM anions from aqueous and acidic solutions. ICP-OES was used to show that both materials exhibit close to 100% uptake of PtCl62- when present in just 3.5 equivalents per anion, comparable to the best materials reported for PtCl62- extraction. Furthermore, UiO-66-NH2 exhibited consistently higher PtCl62- uptake from aqueous solutions than four industrially used materials supplied by Johnson Matthey. Back-extraction of PtCl62- was demonstrated simply by heating the doped MOF in 4 M HCl, removing 99% of the PGM while maintaining the phase and crystallinity of UiO-66-NH2. Separation of PdCl62- from PtCl62- from acidic HCl solutions was exhibited by UiO-66-NH2, showing an exceptional selectivity of 20:1 for Pd:Pt from 2 M HCl. Likewise, 100% selectivity for PtCl62- and PdCl62- over CuCl2 and CuSO4 from acidic solutions was demonstrated, even in cases in which Cu was in 100-fold excess. Solid state NMR was employed to confirm the interaction between the framework and the PGM anions, with XPS results suggesting that the encapsulated Pt species within UiO-66-NH2 may be PtCl3(NH2)3 or PtCl4(NH2)2. Chapter 3 describes the synthesis and characterisation of a series of functionalised Cu(II) MOFs, NOTT-151, -155, -125 and -150, for the removal of neutral PGM complexes, Pd(OAc)2, PtCl4 and Rh2(OAc)4, from THF. The design of the MOFs allowed for an investigation into the effect of different topologies (ssa and fof), cage sizes and functional groups (amine, oxamide and methyl) on the uptake of each PGM complex. ICP-OES analysis showed that the MOFs were capable of extracting each PGM complex. The oxamide-functionalised NOTT-125 exhibited the most consistent uptake of Pd(OAc)2 with a maximum capacity of 35 mg g-1 (7 NH(CO)2NH groups per PtCl4). The amine-functionalised NOTT-155 showed the highest uptake of PtCl4, with a maximum capacity of 73 mg g-1 (4 NH2 groups per PtCl4). Uptake of Rh2(OAc)4 was generally low, however NOTT-125 showed a maximum extraction of 87 mg g-1 (3 NH(CO)2NH groups per PGM). The larger pore fof MOFs, NOTT-155 and NOTT-125, were more effective for each extraction than the MOFs of ssa topology, NOTT-151 and NOTT-150. However, of the ssa MOFs, amine-functionalised NOTT-151 was shown to give higher uptake of each PGM than the isostructural methyl-functionalised NOTT-150. This demonstrated the importance of incorporating a functional group capable of coordinating to the metal complex. Chapter 4 introduces the use of a nitrogen-rich triazine core in the synthesis of a variety of organic linkers to prepare MOFs for gas storage applications. The preparation of a novel 3,24-connected Cu(II) MOF of rht topology, denoted NOTT-160, is described and the structure characterised using X-ray crystallography. The material is shown to exhibit good uptake of C2 hydrocarbons with uptake of 128 cc g-1, 115 cc g-1, 110 cc g-1 for C2H2, C2H4, C2H6 respectively at 298 K and 1 bar (this becomes 212 cc g-1, 175 cc g-1 and 201 cc g-1 at 273 K and 1 bar). The selectivities of 79:1 and 70:1 calculated using Henry’s law for the separations of C2H2:CH4 and C2H4:CH4 respectively at 298 K are the third and second highest reported values for a MOF under these conditions. Ideal adsorbed solution theory (IAST) was also employed to calculate and predict these selectivities and shows agreement with the results obtained using Henry’s law. In addition, NOTT-160 shows an exceptional volumetric working capacity for CH4 of 221 cm3 cm-3 at 80 bar and 298 K. This is the second highest working capacity reported for a MOF under these conditions, with the excellent performance attributed to the high porosity and comparatively high crystal density of the material. Chapter 5 contains a summary of the work presented in this thesis.

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Jonck, Heine. „Development of platinum metal specific separating agents“. Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/712.

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In this dissertation, the aim was to develop a platinum specific resin to be utilized for the early removal of platinum from the industrial feed solution. Efforts were therefore directed towards the syntheses of silica based resins, with active centra, designed for platinum. The large chlorometallate ions present in the feed stream, were characterized in terms of physical parameters relevant to phase distribution, namely distortability (RD), charge density, softness (σ) etc. Matching cations for each of the types were investigated. In order to attempt the design of platinum specific resins, different structural amines were used to aminate the silicone precursor and to subsequently fix these onto the silica framework. Two different solvents namely alcohol and dmf were used in this process, resulting in two sets of resins, with different properties. The design was based on previous experience with these ions, with reference to their behaviour towards different types of cations. The platinum species, PtCl6 2- and PtCl4 2-, as well as the most important contaminants in the feed stream, were typified, bearing in mind size, charge, charge density and distortability. Different types of cationic centra, having differences in charge density, stereochemical crowding and extent of hydrophobicity, were synthesized and tested-both as solvent extractants (where possible) and silica based resins. The results indicated that, partly screened secondary ammonium cationic resin species, which could be regarded as “intermediate”, proved to be satisfactory both in their high percentage extraction for PtCl4 2- and rejection of contaminants like chlororhodates, chloroiridates(III) and FeCl4 -. It was however necessary, to work at a redox potential, where iridium(IV) in the form of IrCl6 2-, was absent. Various 2-aminoalkane resins were prepared, with variation in the length of alkane group and synthesised by the two different solvents. The latter resulted in two sets of resins with not only differing compactness, but also having significantly different properties with reference to platinum specificity, HCl effect and stripping potential. The 2-aminobutane and 2-aminoheptane resins in particular, proved to be very satisfactory platinum specific resins, both with respect to selectivity, platinum capacity and stripping potential. The various physical parameters could be applied to identify the chemical behaviour of anions and assist in the development of anion specificity for the relevant species.

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Wicks, Joseph Leslie Michael. „Routes to mixed metal compounds of the platinum group : metal σ-acetylide complexes and platinum clusters“. Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620495.

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Pike, Sarah Jane. „Dynamic platinum(II)- based metallosupramolecular architectures“. Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/7942.

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Over the past two decades, transitions metals have been extensively employed towards the construction (using coordination driven assembly) and operation (using reversible metal-ligand switching motifs) of supramolecular architectures. This Thesis details the investigation of an array of dynamic platinum(II)-based metallosupramolecular architectures and includes a series of model studies on switchable platinum(II) coordination modes. Chapter Two describes the synthesis and study of a series of prototype noninterlocked molecular machines. The inherent dynamics of intramolecular metalligand substitution reactions (metallotrophic shifts) are exploited to drive a d8 platinum(II-)-phenanthroline component along different ligating architectures to achieve translational (and in one case rotary) motion of the sub-molecular components. Variable temperature NMR studies of these complexes have established the kinetic parameters for the observed shuttling processes. In Chapter Three, the switchable behaviour of a metal-ligand coordination motif is reported in which a proton input is employed to modify the overall thermodynamic bias and light is orthogonally utilized to selectively lower the energetic barrier for the binding event to re-equilibration. A discussion of the light-promoted ligand exchange reaction is presented, supported by a combination of TD-DFT calculations and kinetic studies. Chapter Four describes the exploitation of this discovered pH-switchable metalligand motif for the stimuli-responsive reversible assembly of two dimensional and three dimensional metallosupramolecular architectures. Whilst Chapter Five details how this reversible motif can be exploited to induce controlled exchange between “3+1” and “2+2” square planar platinum donor sets in response to the application of acid-base stimuli.

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Ringo, Jessica M. „Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications“. University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911.

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Sherman, D. J. „Studies on some platinum metal compounds“. Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382671.

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Crofts, Rhona D. „Platinum metal complexes of macrocyclic ligands“. Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/13493.

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Sekota, Mantoa Makoena C. „Catalytic reactions of platinum group metal phthalocyanines“. Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1006151.

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The voltammetric behaviour of I-cysteine and other organic compounds such as hydrazine, hydroxylamine and methionine has been studied on GCE modified with phthalocyanine complexes of osmium, rhodium and ruthenium. For cysteine oxidation, the catalytic activity of the electrode was dependent the nature of the axial ligand. When cyanide and dimethylsulphoxide (DMSO) were used as axial ligands, giving (DMSO)(Cl)Rh(III)Pc, [(CN)₂Rh(III)Pc], (DMSO)₂0S(II)Pc and [(DMSO)₂Ru(II)Pc].2DMSO complexes, the peak current increased with repetitive scanning, indicating the increase in catalytic activity of the electrode after each scan. This behaviour was not observed when pyridine was used as axial ligand. The improvement of the catalytic activity of the GCE after the first scan has been attributed to the formation of the dimeric π-cation radical species at the electrode surface. Water soluble phthalocyanine complex ([(CN)₂Os(II)Pc]²⁻) and the tetramethyltetra-pyridinoporphyrazine complexes of Pd(II) and Pt(II), ([Pd(II)2,3Tmtppa(-2)]⁴⁺, [Pd(II)3,4Tmtppa(-2)]⁴⁺, [Pt(II)2,3Tmtppa(-2)]⁴⁺ and [Pt(II)3,4Tmtppa(-2)⁴⁺) have been prepared. [(CN)₂Os(II)Pc]²⁻ is soluble in water at pH greater 4 without the formation of dimers. The [M(II)Tmtppa(-2)]⁴⁺ (M = Pd or Pt) show high solubility in water and are stable only in acidic pHs. The cyclic voltammetry of the MPc and [M(II)Tmtppa(-2)]⁴⁺ complexes prepared, is also reported. The interactions of amino acids I-histidine and I-cysteine with the [M(II)Tmtppa(-2)]⁴⁺ complexes of Pd(II) and Pt(ll) were studied. All the [M(Il)Tmtppa(-2)]⁴⁺ are readily reduced to the monoanion species [M(Il)Tmtppa(-3)]³⁻ in the presence of histidine and cysteine. The rate constants for the interaction of [M(Il)Tmtppa(-2)]⁴⁺ complexes ofPt(II) and Pd(II), with histidine and cysteine range from approximately 2 x 10⁻³ to 0.26 dm³ mol⁻¹ s⁻¹. Kinetics of the interaction of [Co(Il)TSPc]⁴⁻ with amino acids, histidine and cysteine in pH 7.2 buffer were studied. The rate constants were found to be first order in both [Co(II)TSPc]⁴⁻ and the amino acid. The formation of [Co(III)TSPc]³⁻ in the presence of histidine occurred with the rate constant of 0.16 dm³ mol⁻¹ s⁻¹, whereas the formation of the [Co(I)TSPc]⁵⁻ species in the presence of cysteine gave the rate constant of 2.2 dm³ mo⁻¹ s¹. The relative quantum yield (QΔ) for singlet oxygen production by [(CN)₂Os(Il)Pc]²⁻, and [(CN)⁴Ru(II)Pc]²⁻ in DMF using diphenylisobenzofuran (DPBF) and a chemical quencher were determined. The quantum yield values were obtained as 0.39 ± 0.05 , and 0.76 ± 0.02 for [(CN₂Os(II)Pc]²⁻ and [(CN)₂Ru(II)Pc]²⁻ respectively. The differences in quantum yield values have been explained in terms of donor abilities of both the central metal and the axial ligands.

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Acharya, Suvra. „Platinum metal`s complexes: synthesis and characterization“. Thesis, University of North Bengal, 2011. http://hdl.handle.net/123456789/1384.

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Smale, Simon. „Study of the hydrogen evolution reaction on platinum and platinum group metal surfaces“. Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54760/.

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The hydrogen evolution reaction (HER) has been examined on a variety of Pt and Pt-group metal surfaces to investigate the rate of the reaction. Pt stepped single crystal surfaces were investigated in relation to the HER using cyclic voltammetry, linear sweep voltammetry and multi-frequency AC voltammetry. It was found that the hydrogen evolution reaction activity did not show a dependence on the structure of single crystal platinum electrode surfaces. Thick films of Au, Rh and Pd were deposited onto Pt {111} and successfully annealed to give pseudomorphic surfaces of the bulk metal. The aim of such measurements was to investigate whether strains within the crystal lattice of these films would result in enhanced HER activity. None of the surfaces investigated showed significant HER enhancement. Rather, results similar to those observed using the bulk metals were obtained. Rough Ir and Pt deposits on Pt{111} were also investigated. Enhanced HER activity was observed on these surfaces. This enhancement was interpreted in terms of the structural arrangement of the Ir and Pt deposits. For Pd films on Pt {111} (0 < fVPd < 2 monolayers) it was observed that Pt dominated the HER kinetics for Pd coverages up to one monolayer and was still influential on the HER at two monolayers of Pd. Similarly Pd-Pt surface alloys also showed that Pd had little or no influence on the HER kinetics even with 75 % Pd in the surface layer. Possible mechanisms for this behaviour have been proposed, in particular, the role of subsurface hydrogen in HER on Pt is discussed.

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Bücher zum Thema "Platinum metal"

M, Meldrum, und Great Britain. Health and Safety Executive., Hrsg. Platinum metal & soluble platinum salts: Criteria document for an occupational exposure limit. Sudbury: HSE Books, 1996.

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The international platinum group metals trade. Boca Raton, FL: CRC Press, 1999.

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E, Ryan James. Platinum: The metal that could make you rich in the 1990's. Bellevue, Wash: Northwest Silver Press, 1990.

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Yopps, D. L. Bacterial preoxidation of Stillwater Complex, MT, platinum-group metal flotation concentrate and recovery of plantinum-group metals by cyanidation. Washington, DC: U.S. Dept. of the Interior, Bureau of Mines, 1991.

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Howell, Stephen B., Hrsg. Platinum and Other Metal Coordination Compounds in Cancer Chemotherapy. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-0738-7.

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Bonetti, Andrea, Roberto Leone, Franco M. Muggia und Stephen B. Howell, Hrsg. Platinum and Other Heavy Metal Compounds in Cancer Chemotherapy. Totowa, NJ: Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60327-459-3.

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Nicolini, Marino, Hrsg. Platinum and Other Metal Coordination Compounds in Cancer Chemotherapy. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1717-3.

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International Symposium on Platinum and Other Metal Coordination Compounds in Cancer Chemotherapy (6th 1991 San Diego, Calif.). Platinum and other metal coordination compounds in cancer chemotherapy. New York: Plenum Press, 1991.

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Deb, Prabir. Microstructural formation and effects on the performance of platinum modified aluminide coatings. Monterey, Calif: Naval Postgraduate School, 1985.

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Yopps, D. L. Bacterial preoxidation of Stillwater Complex, MT, platinum-group metal flotation concentrate and recovery of plantinum-group metals by cyanidation and other leachants. Washington, DC: U.S. Dept. of the Interior, Bureau of Mines, 1991.

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Buchteile zum Thema "Platinum metal"

Levin, Vuma Ian. „Platinum“. In Heavy Metal, 155–56. Cambridge, UK: Open Book Publishers, 2024. http://dx.doi.org/10.11647/obp.0373.19.

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Kelland, Lloyd R. „Platinum anticancer drugs“. In Metal Compounds in Cancer Therapy, 32–45. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1252-9_2.

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Picker, D. H. „Platinum Radiosensitizers“. In Platinum and Other Metal Coordination Compounds in Cancer Chemotherapy, 355–66. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1717-3_42.

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Adzic, Radoslav, und Nebojsa Marinkovic. „Prospects for Platinum and Platinum Group Metal Monolayer Electrocatalysts“. In Platinum Monolayer Electrocatalysts, 161–62. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49566-4_11.

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Barea, Elisa, L. Marleny Rodríguez-Albelo und Jorge A. R. Navarro. „Platinum Group Metal-Organic Frameworks“. In The Chemistry of Metal-Organic Frameworks: Synthesis, Characterization, and Applications, 203–30. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527693078.ch8.

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Lippard, Stephen J. „Platinum DNA Chemistry“. In Platinum and Other Metal Coordination Compounds in Cancer Chemotherapy, 1–12. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-0738-7_1.

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Brabec, Viktor, und Jana Kasparkova. „78Pt Platinum-Based Drugs“. In Metallotherapeutic Drugs and Metal-Based Diagnostic Agents, 489–506. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470864052.ch25.

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Wassie, Addisu Tamir, D. P. Pandey, Archana Bachheti, Azamal Husen, Deepti Singh Vashishth und Rakesh Kumar Bachheti. „Use of Green Synthesized Platinum Nanoparticles for Biomedical Applications“. In Metal and Metal-Oxide Based Nanomaterials, 271–85. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-7673-7_13.

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Farrell, Nicholas. „The Platinum—Pyrimidine Blues“. In Transition Metal Complexes as Drugs and Chemotherapeutic Agents, 127–41. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-011-7568-5_6.

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Kubiak, Clifford P., Gregory K. Broeker, Robert M. Granger, Frederick R. Lemke und David A. Morgenstern. „Patterned Imaging of Palladium and Platinum Films“. In Photosensitive Metal—Organic Systems, 165–84. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/ba-1993-0238.ch009.

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Konferenzberichte zum Thema "Platinum metal"

AMDUR, Alexei, Sergei FEDOROV und Valery PAVLOV. „The reasons for the platinum losses in the metallurgical processing of copper-nickel ores“. In METAL 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/metal.2020.3587.

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Al-Khaykanee, Mohsin K., Faeq A. Al-Temimei, A. A. Al-Jobory, Dhay Ali Sabur und Hamid I. Abbood. „Thermoelectric properties of platinum metal complexes“. In THE 7TH INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY (ICAST 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5123090.

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Bennett, Matthew D., und Donald J. Leo. „A Co-Reduction Process for Plating Ionic Polymer Transducers With Precious and Non-Precious Metal Electrodes“. In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39007.

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A co-reduction process is developed for plating ionic polymer materials with precious and non-precious metal electrodes. The purpose is to develop a process that reduces the use of expensive precious metals such as platinum and gold in the development of ionic polymer transducers. Previous results by Bennett and Leo (1) have demonstrated that oxidation is the key issue associated with the use of non-precious metal electrodes. The present work overcomes this problem through the use of a co-reduction process in which an alloy of platinum and copper is deposited in an impregnation/reduction process. A thin (~50 nm) layer of gold is then deposited to increase the surface conductivity of the electrode. Actuators developed using this process are tested for longevity for approximately 250,000 cycles. The results demonstrate the stability of the electrode, although multiple tests reveal that variations in the process produce variations in the electrode stability.

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AMDUR, Alexei, und Sergei FEDOROV. „INFLUENCE OF CaF2 AND CaCO3 FLUX ADDITIVES ON THE DISTRIBUTION OF GOLD AND PLATINUM BETWEEN MATTE AND SLAG DURING MELTING OF COPPER-NICKEL SULPHIDE MATERIALS“. In METAL 2021. TANGER Ltd., 2021. http://dx.doi.org/10.37904/metal.2021.4266.

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Cui, Deyu, Heming Chen und Xiuli Bai. „Surface platinum metal plasma resonance photonic crystal fiber sensor“. In International Conference on Optoelectronics and Microelectronics Technology and Application, herausgegeben von Yikai Su, Chongjin Xie, Shaohua Yu, Chao Zhang, Wei Lu, Jose Capmany, Yi Luo et al. SPIE, 2017. http://dx.doi.org/10.1117/12.2267587.

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Ito, Kyohei, Shuhei Inoue und Yukihiko Matsumura. „Synthesis of Single-Walled Carbon Nanotube Containing Platinum Group Element“. In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44257.

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To prepare homogeneous nanoparticles is a key issue for catalytic reaction because it directly connects to the control of the reaction. Using the sidewall of SWCNT as a catalyst supporter, the size of nanoparticle can be controlled, because the particle size should be affected by the interaction between SWCNT and metal species and its curvature. In this study, we focused on the direct synthesis of SWCNT with highly dispersed platinum group metal species. As a result, adding an adequate amount of platinum group metals into catalysts never disturbs the synthesis of SWCNT. Referring to TGA measurement, the presence of metal attached and/or metal involved SWCNT is suggested. Furthermore, SEM images show many nanoparticles are on SWCNT. When ruthenium catalyst is used, ruthenium nanoparticles are observed on the surface of nano carbon materials, which looks like SWCNT. These results indicate the possibility of direct synthesis of metal-containing SWCNT in CVD technique.

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Tsugawa, Marissa A., Kam K. Leang, Viljar Palmre und Kwang J. Kim. „Sectored Tube-Shaped Ionic Polymer-Metal Composite Actuator With Integrated Sensor“. In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3017.

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This paper describes the development of a tube-shaped ionic polymer-metal composite (IPMC) actuator with sectored electrodes and an integrated resistive strain-based displacement sensor. Tube or cylindrical shaped IPMC actuators, with the ability to provide multiple degrees-of-freedom motion, can be used to create active catheter biomedical devices and novel bio-inspired propulsion mechanisms for underwater autonomous systems. An experimental tube-shaped IPMC actuator is manufactured from a 40-mm long Nafion polymer tube with inner diameter of 1.3 mm and outer diameter of 1.6 mm. The outer surface of the tube-shaped structure is plated with platinum metal via an electroless plating process. The platinum electrode on the tube’s outer surface is sectored into four isolated electrodes using a simple surface milling technique. A custom-designed strain sensor comprised of 50 AWG ni-chrome wire is developed and attached to the tube’s surface to sense the bending motion of the tube actuator. The integrated sensor is low cost and practical, and it avoids the need for bulky external sensors such as lasers for measuring deflection and feedback control. Preliminary experimental results are presented to demonstrate the performance of the IPMC tube actuator and integrated displacement sensor.

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Petrović, Biljana. „TRANSITION METAL ION COMPLEXES AS POTENTIAL ANTITUMOR AGENTS“. In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac,, 2021. http://dx.doi.org/10.46793/iccbi21.009p.

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Discovery of the antitumor activity of platinum complex, cisplatin, cis-Pt(NH3)2Cl2, and later carboplatin and oxaliplatin, led to the intensive investigation of the potential antitumor activity of the huge number of platinum complexes. Furthermore, it is well-known that platinum complexes express toxicity, numerous side effects and resistance, so the scientists make a lot of efforts to synthetize, beside Pt(II) and Pt(IV), other non-platinum compounds with potential antitumor activity, such as Pd(II), Ru(II/III) and Au(III) complexes. The goal of this study is to summarize the results of the investigation of the interactions between some mononuclear, homo- and hetero-polynuclear Pt(II), Pd(II), Ru(II/III) and Au(III) complexes with different sulfur- and nitrogen-donor biologically relevant nucleophiles. Among mononuclear complexes, the compounds with aromatic terpy (tepyridine) or bpma (bis-(2- pyridylmethyl)amine) and aliphatic dien (diethylentriamine) nitrogen-containing inert ligands were studied. Different homo- and hetero-polynuclear complexes with pz (pyrazine) or 4,4’-bipy (4,4’- bipyridine) as bridging and mostly en (ethylenediamine), bipy (2,2’-bipyridine) and dach (trans-1,2- diaminocyclohexane) as inert ligands were studied as well. The research was focused on the connection between the structure and the mechanisms of interactions with different biomolecules, such as L- cysteine (L-Cys), L-methionine (L-Met), tripeptide glutathione (GSH), guanosine-5’-monophosphate (5’-GMP), DNA and bovine serum albumin (BSA). Some of these complexes were selected for in vitro studies of the cytotoxicity on different tumor cell lines. Observed results contribute a lot as a guidance for the future design and determination of the structure-activity relationship (SAR) of different transition metal ion complexes.

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Mochalov, A. G., und O. V. Yakubovich. „TYPOMORPHIC CRITERIA OF NATIVE MINERALS OF PLATINUM BY A 190Pt–4He DATING OF PLATINUM-METAL MINERAL FORMATION“. In Annual Meeting of the Russian Mineralogical Society combined with the Fedorov Session 2023. LEMA, 2023. http://dx.doi.org/10.30695/zrmo/2023.067.

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Letseli, Mohale, Willie Nheta und Arno Steinmuller. „Characterisation and Flotation of a Weathered Platinum Group Metal Ore“. In The 4th World Congress on Mechanical, Chemical, and Material Engineering. Avestia Publishing, 2018. http://dx.doi.org/10.11159/mmme18.124.

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Berichte der Organisationen zum Thema "Platinum metal"

Lawrence Shore. Platinum Group Metal Recycling Technology Development - Final Report. Office of Scientific and Technical Information (OSTI), August 2009. http://dx.doi.org/10.2172/962699.

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Smith, Braeton, Diane Graziano, Matthew Riddle, Di-Jia Liu, Pingping Sun, Chukwunwike Iloeje, Emmeline Kao und David Diamond. Platinum Group Metal Catalysts - Supply Chain Deep Dive Assessment. Office of Scientific and Technical Information (OSTI), Februar 2022. http://dx.doi.org/10.2172/1871583.

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Lawley, C. J. M., S. E. Jackson, D. C. Petts, D. Savard, D G Pearson, S. Zhang, A. Zagorevski und B. A. Kjarsgaard. Mantle metal mobility: preliminary gold and platinum group element geochemical results. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/313635.

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Ervin, Matthew H., und Brian Isaacson. Same-Side Platinum Electrodes for Metal Assisted Etching of Porous Silicon. Fort Belvoir, VA: Defense Technical Information Center, November 2015. http://dx.doi.org/10.21236/ada623559.

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Mukerjee, Sanjeev, Qingying Jia, Adam Weber und Serge Pann. Developing Platinum-Group-Metal-Free Catalysts for Oxygen Reduction Reaction in Acid: Beyond the Single Metal Site. Office of Scientific and Technical Information (OSTI), März 2022. http://dx.doi.org/10.2172/2294100.

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Boffa, Alexander Bowman. Transition metal oxides deposited on rhodium and platinum: Surface chemistry and catalysis. Office of Scientific and Technical Information (OSTI), Juli 1994. http://dx.doi.org/10.2172/10186279.

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Korzeniewski, C., B. S. Pons, P. P. Schmidt und M. W. Severson. An analysis of the Vibrational Spectrum of Carbon Monoxide on Platinum Metal Electrodes. Fort Belvoir, VA: Defense Technical Information Center, Oktober 1986. http://dx.doi.org/10.21236/ada173366.

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Ayers, Katherine, Christopher Capuano, Plamen Atanassov, Sanjeev Mukerjee und Michael Hickner. High Performance Platinum Group Metal Free Membrane Electrode Assemblies through Control of Interfacial Processes. Office of Scientific and Technical Information (OSTI), November 2017. http://dx.doi.org/10.2172/1410560.

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Ganesan, Prabhu. Final Technical Report- ElectroCat (Electrocatalysis Consortium) – Platinum-Group-Metal-Free Catalyst and Electrode R&D. Office of Scientific and Technical Information (OSTI), Dezember 2020. http://dx.doi.org/10.2172/1989291.

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Alia, Shaun M. Low-Platinum Group (PGM) Metal Catalysts: Cooperative Research and Development Final Report, CRADA Number CRD-16-649. Office of Scientific and Technical Information (OSTI), August 2019. http://dx.doi.org/10.2172/1560121.

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