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Pt···Pt vs Pt···S Contacts Between Pt-Containing Heterobimetallic Lantern Complexes
Inorganic Chemistry, 2013A trio of Pt-based heterobimetallic lantern complexes of the form [(py)PtM(SAc)4(py)] (M = Co, 1; Ni, 2; Zn, 3) with unusual octahedral coordination of Pt(II) was prepared from a reaction of [PtM(SAc)4] with excess pyridine. These dipyridine lantern complexes could be converted to monopyridine derivatives with gentle heat to give the series [PtM(SAc)4 ...
Frederick G, Baddour +6 more
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Origin of Anomalous Pt–Pt Distances in the Pt/Alumina Catalytic System
ChemPhysChem, 2004The Pt/g-alumina system is representative of many common heterogeneous catalysts, which consist of transition metals dispersed on a high surface-area support. For example, catalytic reduction and oxidation of automotive pollutants is accomplished with platinum (Pt) or rhodium (Rh) dispersed on a galumina surface.
Karl, Sohlberg +4 more
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NO Chemisorption on Pt(111), Rh/Pt(111), and Pd/Pt(111)
The Journal of Physical Chemistry B, 2005The chemisorption of NO on clean Pt(111), Rh/Pt(111) alloy, and Pd/Pt(111) alloy surfaces has been studied by first principles density functional theory (DFT) computations. It was found that the surface compositions of the surface alloys have very different effects on the adsorption of NO on Rh/Pt(111) versus that on Pd/Pt(111).
Hairong, Tang, Bernhardt L, Trout
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A photoemission study of the oxidation of platinum in Pt-based alloys: Pt-Pd, Pt-Ru, Pt-Ir
Surface Science Letters, 1984Abstract Photoemission technique was used to study the surface composition of PtPd, PtRu and PtIr alloys in a wide range of bulk compositions. The samples were submitted to in-situ oxygen exposures at atmospheric pressure and various temperatures in the 200 to 600°C range. Oxygen induced changes of surface composition were followed.
L. Hilaire +4 more
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Comparative Study of Pt/Pd and Pt–Rh/Pt Thermocouples
International Journal of Thermophysics, 2010The Pt/Pd thermocouple has demonstrated superior thermoelectric drift and homogeneity performance over conventional Pt–Rh/Pt thermocouples. Here, we present a systematic comparison of the drift and homogeneity performance of Pt/Pd and Type R thermocouples by ageing the thermocouples at 1350 °C for a total of 500 h and measuring the performance at ...
Ongrai, O +3 more
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Dalton Trans., 2006
In this work we report the first example of a trinuclear Pt(II) complex with Pt-Pt-Pt bonds that are not facilitated by direct intervention of bridging ligands but are partially held by the attractive pi-pi stacking interaction between the phenyl units of the 4,4'-dimethyl-2,2'-bipyridyl ligands.
Albert, Poater +6 more
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In this work we report the first example of a trinuclear Pt(II) complex with Pt-Pt-Pt bonds that are not facilitated by direct intervention of bridging ligands but are partially held by the attractive pi-pi stacking interaction between the phenyl units of the 4,4'-dimethyl-2,2'-bipyridyl ligands.
Albert, Poater +6 more
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Monomeric Pt(II) and dimeric Pt-Pt and Pt-Pd complexes of a triazolo pyrimidine derivative
Journal of Inorganic Biochemistry, 1995The ligand 5-methyl-[1,2,4]tr iazolo-[1,5-a]pyrimidine-7-ol (mtpOH) reacts wi th K2[PtCI 4] in 0.5 M hydrochloric acid yielding cis-[PtCI2(mtpOH)2].H20 (I). Dissolving this compound in a NaOH solution causes its decomposition and, from this solution, the dimeric complex [Pt2(mtpO)4].4H20 (11) crystallizes out. On the other hand, the reaction at 45°C of
J. Rodríguez +4 more
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Dalton Trans., 2017
An intermediate compound of a tetranuclear Pt–Fe⋯Fe–Pt complex in the synthetic process to form a trinuclear Pt–Fe–Pt complex by mixing the “amidate-hanging” Pt mononuclear complex and iron sources was successfully isolated and characterized by single-crystal X-ray analysis and several physical measurements.
Kazuhiro Uemura, Masahiro Taoka
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An intermediate compound of a tetranuclear Pt–Fe⋯Fe–Pt complex in the synthetic process to form a trinuclear Pt–Fe–Pt complex by mixing the “amidate-hanging” Pt mononuclear complex and iron sources was successfully isolated and characterized by single-crystal X-ray analysis and several physical measurements.
Kazuhiro Uemura, Masahiro Taoka
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Ethylene Adsorption on Al2O3-Supported Pt, Pt–Sn, and Pt–In Catalysts
Journal of Catalysis, 1996Abstract Ethylene adsorption on a family of Al2O3-supported Pt, Pt–Sn, and Pt–In catalysts was investigated at 300 K. The presence of Sn and In caused a decrease in ethylene uptake, similar to that observed in H2chemisorption measurements. Integral, isothermal heats of adsorption were measured and the heat of adsorption (Qad) values for C2H4on small ...
Fabio B. Passos +2 more
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Oxidation of glucose and gluconate on Pt, Pt Bi, and Pt Au catalysts
Recueil des Travaux Chimiques des Pays-Bas, 1996AbstractGlucose and gluconate aqueous solutions (2 mol/l) were oxidized with air (atmospheric pressure, 333K, pH 7) on active charcoal‐supported, platinum catalysts (catalytic ratios substrate/Pt ≥ 787); some catalysts were promoted with bismuth or gold. The activity of unpromoted Pt/C catalysts for glucose oxidation was comparable with that of Pd‐Bi/C
Besson, M. +4 more
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