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- W2215476487 abstract "Although diffuse reflectance spectroscopy (DRS) has been employed for many years in catalytic studies, difficulties arising from generally large bandwidths and specular reflectance have somewhat limited its development; however, the use of various model coordination compounds should reinforce the capabilities of this technique. This chapter discusses the preparation of a metal catalyst (alumina-supported palladium) from the precursor, via the calcination stage, to the active phase along with the characterization of a supported oxide (silica-supported ceria) with an attempt to link the optical spectrum to the dispersion of the oxide phase. The diffuse reflectance spectra of supported semiconducting oxides are very sensitive to the particle size and provide information when X-ray diffraction or even electron microscopy experiments are not conclusive. The spectral variations are believed to arise from the vanishing of collective properties, which leads to the enhancement of the band-gap width and to the predominance of localized (surface) charge transfers." @default.
- W2215476487 created "2016-06-24" @default.
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- W2215476487 date "1993-01-01" @default.
- W2215476487 modified "2023-10-18" @default.
- W2215476487 title "Revisiting Diffuse Reflectance Spectroscopy for the Characterization of Metal and Semiconducting Oxide Catalysts" @default.
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- W2215476487 doi "https://doi.org/10.1016/s0167-2991(08)64556-5" @default.
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