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Microstructure and reducibility of Ce–Er–O mixed oxide deposited on γ-Al2O3 as preformed Ce0.5Er0.5O1.75 nanoparticles or by co-impregnation using nitrate solution was studied by XRD, TEM, STEM-EDS, BET and TPR-TPO methods. The Ce0.5Er0.5O1.75/Al2O3 system shows high thermal stability in the oxidizing atmosphere, but in hydrogen atmosphere formation of mixed Ce, Er aluminates occurred already at 800°C...
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