用循环伏安法在玻碳电极上制备出铂-氢钨青铜(Pt-H(下标 x)WO3)催化剂,用扫描电子显微镜(SEM),Raman光谱和循环伏安法研究了催化剂的组成,结构及其对甲醇氧化的催化作用.结果表明,Pt-H(下标 x)WO3的活性与制备溶液中铂与钨原子比及酸度有关,与相同条件下制备的纯铂(Pt)催化剂相比,Pt-H(下标 x)WO3对甲醇...
Fig. 6: Influence of the Cl binding energy for Ir-based electrocatalysts. In-situ Raman spectroscopy result for chlorine evolution using (a) IrOx, and (b) Pt/IrOxas the catalyst using 1 M KCl as the solution. Operando Ir L3-edge XANES spectra of (c) IrOxand (d) Pt/IrOxcollected a...
Density Functional Study and Normal-Mode Analysis of the Bindings and Vibrational Frequency Shifts of the Pyridine−M (M = Cu, Ag, Au, Cu+, Ag... Raman and infrared (IR) spectroscopies have been used extensively to study the adsorption of pyridine on various surfaces for more than 40 ...
IR-Raman and 1H NMR Spectra of Some Amino Acid Chelates of the Type cis-[(NH3)2Pt(amac)](NO3), Where amac is the Anions of Glycine, L-Alanine. L-Aminobutyric Acid, L-Valine And L- Norvaline and of Ternary Complexes of the Type cis- [(NH3)2Pt(nucl)(amac)](NO3), Where nucl-9...
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The water-gas shift reaction is a key catalytic process for the production of clean Hgas for fuel cells.[2] In this study, we use plane wave pseudopotential density functional theory to study the adsorption properties and the activation of CO, COand HO on Pt clusters supported on the ...
The two compounds were also characterized by differential thermal analysis, thermogravimetry, infrared, and Raman spectroscopy.Zeitschrift für Anorganische und Allgemeine ChemieMühle, ClausNuss, JürgenJansen, Martin
This was further confirmed by Raman spectroscopic investigations, which showed that the wavenumbers of the C-C stretching vibrations in Na2PdC2 and Na2PtC2 are about 100 cm(-1) smaller than in acetylene. 13C MAS-NMR spectra demonstrated that the acetylenic C2 units in the title compounds are...
143Altmetric Metrics Abstract The recent availability of shale gas has led to a renewed interest in C–H bond activation as the first step towards the synthesis of fuels and fine chemicals. Heterogeneous catalysts based on Ni and Pt can perform this chemistry, but deactivate easily due to coke...
Platinum-hydrogen tungsten bronze (Pt-HxWO3) was prepared on a glassy carbon electrode by cyclic voltammetry and its composition,morphology,structure,and activity towards methanol oxidation were characterized by scanning electron microscope (SEM),Raman spectrum,and cyclic voltammetry. Results show that Pt...