Microanalysis precursor

Microanalysis of a Copper-Zinc Oxide Methanol Synthesis Catalyst Precursor... 

The Fe-Au nanoparticles were reported to consist of metallic cores, having an average diameter of 6.1 nm, surrounded by an oxide shell, averaging 2.7 nm in thickness, for a total average particle diameter of 11.5 nm [101]. A surfactant solution is prepared with nonylphenol poly(ethoxylate) ethers. Au-coated Fe nanoparticles were also prepared in a reverse micelle formed by cetyltrimethylammonium bromide (CTAB), 1-butanol and octane as the surfactant, the co-surfactant and the oil phase, respectively [100]. The nanoparticles were prepared in aqueous solutions of micelles by reduction of Fe(II) and Au precursors with NaBH4. The typical size of the nanoparticles is about 20 nm. The existence of Fe and Au is again confirmed by energy dispersive X-ray microanalysis. 

Analysis and spectroscopic study. The elemental analysis was performed with anICP-6000 spectrometer. The precursors crystallization was studied by thermal analysis methods (TG85). The samples were analysed by IR spectroscopy (Nicollet, FTIR-7500) and powder X-ray diffraction (PXRD, DRON-3). The morphology of surface was studied by scanning electron microscopy (SEM) (JEOL, JSM-6100). The density of KTP particles was determined by a sink-float method. Local x-ray analysis was performed using Link ISIS microanalysis system (Si Li detector) mounted on Jeol 2000 FX microscope. Bruker-400 apparatus was used for P, C and H NMR study of precursor solution. The YAG Nd SHG was measured on LS-10 device. 

DTA, TG, IR, and X-ray microanalysis techniques were applied to identify the materials that formed around the rim of sandstone or silt stone aggregate in a thirty-year old concrete.An alkali-substituted okenite (C5 S9H9), a precursor phase characterized by a 1.22 nm XRD spacing, was identified. 

---