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担载于Al_2O_3上的NaRuCO_3(CO)_(12)络合物在IR光谱上出现类似于Ru(CO)_2O_2络合物特征带的羰基带,在300～400℃左右变强,在CO中尤为明显。在以ZrO_2为载体时出现与原来络合物相近的弱羰基带。当CO吸附于以Al_2O_3为载体的脱羰基催化剂上时,发现在氧化态催化剂上也出现了与担载络合物相似的吸收带,在还原态催化剂上只出现线式带。吸附于以ZrO_2为载体的脱羰基催化剂上的CO不出现CO的IR吸收带,在He中亦无TPD脱附物,在H_2中却可发生加氢反应生成CH_4。从Na~+和ZrO_2协同效应角度,探讨了CO在上述两种分散型催化剂上吸脱附行为不同的原因。
The NaRuCO_3 (CO) _ (12) complex supported on Al 2 O 3 exhibits a carbonyl band similar to the characteristic band of Ru (CO) _ 2 O 2 complex on the IR spectrum and becomes stronger at about 300-400 ° C. In CO Especially obvious. In the presence of ZrO 2 as a carrier, a weak carbonyl band resembles the original complex. When CO was adsorbed on the decarbonylation catalyst supported on Al 2 O 3, it was found that an absorption band similar to the supported complex appeared in the oxidation state catalyst, and only a linear band appeared on the reduced catalyst. CO adsorbed on the decarbonylation catalyst supported on ZrO 2 did not show the IR absorption band of CO, nor did it have TPD desorption in He, but hydrogenation could occur in H 2 to form CH_4. From the synergetic effect of Na ~ + and ZrO_2, the reasons for the different sorption and desorption behaviors of CO on these two dispersive catalysts were discussed.