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针对Cu/Mn/Ni/ZrO2 合成低碳醇催化剂的独特反应行为 ,制备了一系列模型催化剂以考察各组元的作用。结果表明 ,Cu是主要的合成醇类产物的活性组分 ,镍是催化剂上促进碳链增长的重要元素 ,同时也可使异丁醇的生成在较为温和的反应条件下进行。氧化锆既起载体的作用 ,也是合成异丁醇的主要活性组元。同时组元的相互组合也是催化剂合成不同种类醇产物的重要保证 ,Mn通过保证Ni、Cu等其它组元的高度分散 ,提高了催化剂的活性 ,并且避免了过量的甲烷等烃类的产生以及甲醇成为主要产物 ,同时Mn的存在还可能促进Ni与ZrO2 的作用 ,使得生成异丁醇的反应在较温和条件下就可以发生
Aiming at the unique reaction behavior of Cu / Mn / Ni / ZrO2 catalyst for synthesis of lower alcohols, a series of model catalysts were prepared to investigate the effect of each component. The results show that Cu is the main active component of the synthetic alcohol products. Nickel is an important element for the catalyst to promote the growth of the carbon chain. At the same time, the formation of isobutanol can also be carried out under mild reaction conditions. Zirconia acts as a carrier and is also the main active component for the synthesis of isobutanol. At the same time, the combination of the components is also an important guarantee for the synthesis of different kinds of alcohol products by the catalyst. Mn can improve the catalyst activity by ensuring high dispersion of other components such as Ni and Cu, and avoid excessive generation of hydrocarbons such as methane and methanol Become the main product, while the presence of Mn may also promote the role of Ni and ZrO2, so that the reaction to generate isobutanol can occur under milder conditions