Cu/Mn/Ni/ZrO_2合成低碳醇催化剂组分作用的初步研究

EFFECT OF COMPONENT OF Cu/Mn/Ni/ZrO_2 CATALYST FOR HIGHER ALCOHOLS SYNTHESIS

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 。

The effect of component of Cu/Mn/Ni/ZrO 2 catalyst for higher alcohols synthesis was studied by using model catalyst in this paper It was found that the copper was an important component for the catalyst to maintain a high activity and stability The addition of manganese could promote not only the diffusion of copper and nickel on the supporter but also carbon chain growth Nickel acted as a key element for the carbon chain growth and ZrO 2 was responsible for iso butanol synthesis