碱金属添加剂对Cu-Co催化剂催化CO+H_2合成低碳混合醇的影响

研究了在Cu-Co共沉淀催化剂中添加K、Rb、Cs等不同碱金属及不同添加量对CO+H_2合成低碳混合醇反应的影响.研究表明,碱金属用量及其种类明显影响低碳醇和烃的生成.添加适量K_2CO_3,可以有效促进C_2~+醇的生成及抑制烃和水的产生.在本实验条件下,含约1.0%(mass)K_2CO_3的催化剂其催化效果较好.并对实验结果作了讨论.

Effect of alkali metal additives for Cu-Co catalysts on lower alcohol synthesis from CO H_2

Effects of the addition of various alkali metals K, Rb, Cs etc. to Cu-Co coprecipitated catalysts and of different doping amounts on lower alcohol synthesis from CO H2have been investigated in the present paper. The results have shown that both have obvious influences to the formations of lower alcohol and hydrocarbon. To add appropriate amount of K2CO3 may effectively promote the synthesis of C2 alcohol and prohibit the formation of water and hydrocarbon. Under the conditions of the experiment, the catalyst with 1.0% K2CO3 shown a better catalytic performance. The experimental results have been discussed also.