A highly active γ-Al₂O₃-supported Ru catalyst (Ru/γ-Al₂O₃-PHR) for Fischer–Tropsch synthesis (FTS) under mild conditions, with a catalytic activity of 13.0 mol_CO mol_Ru⁻¹ h⁻¹ at 423 K, was prepared by reducing γ-Al₂O₃-supported ruthenium oxide, RuO₂·xH₂O/γ-Al₂O₃, with hydrogen in water. It was found that the infrared absorption spectrum of CO adsorbed on Ru/γ-Al₂O₃-PHR is quite different from that of usual Ru catalysts, and CO adsorbed on Ru/γ-Al₂O₃-PHR tends to dissociate, revealing the reason for the high catalytic activity. The reduction conditions of RuO₂·xH₂O/γ-Al₂O₃ have significant influences on the catalytic properties due to the formation of different surface structures of the alumina-supported Ru catalyst. The present work provides not only a way to improve the catalytic activity of supported ruthenium catalysts for FTS but also new information for understanding the high catalytic activity over Ru catalysts for FTS at relatively low temperatures.

中文翻译：

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氧化铝负载钌催化剂上的高效费-托合成†

高活性的γ-Al ₂ ö ₃ -支持的Ru催化剂（钌/γ-Al系₂ ö ₃温和的条件下-PHR），用于Fischer-Tropsch合成（FTS），与13.0摩尔的催化活性_CO摩尔_茹^-1 ħ ^-1在423 K，通过减少的γ-Al制备₂ ö ₃ -支持氧化钌，二氧化钌₂ · X ^ h ₂ O /γ-Al系₂ ö ₃，在水中的氢。结果发现，CO的红外吸收光谱吸附在Ru /γ-Al系₂ ö ₃-PHR不同于通常的钌催化剂相当不同，CO吸附在Ru /γ-Al系₂ ö ₃ -PHR趋于离解，揭示了高的催化活性的原因。的RuO的还原条件₂ · X ^ h ₂ O /γ-Al系₂ ö ₃对催化性能由于氧化铝负载的钌催化剂的不同的表面结构的形成显著影响。本工作不仅提供了改善负载型钌催化剂对FTS的催化活性的方法，而且为理解相对低温下FTS的Ru催化剂的高催化活性提供了新的信息。