XPS Study of the Surface Composition of a Catalytic System: Iron Promoted by Potassium and Aluminum Oxides
作者： B. N. Kuznetsov , V. M. Perov , A. M. Alekseev , V. I. Yakerson
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摘要: The surface composition of a model catalyst for ammonia synthesis based on iron promoted with aluminum and potassium oxides was investigated by X-ray photoelectron spectroscopy. studied in oxidized, passivated, reduced states. redistribution components the is course reduction hydrogen overheating at 700°C. It shown that 4–6-mn thick layer enriched promoters (K Al) impurities (Si), while concentration low. Promotion makes more resistant to overheating.
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