摘要
本文应用“原位”发射红外光谱技术，在２８０℃，０．５ＭＰａ反应条件下，对于Ｃｕ／ＺｎＯ／Ａｌ＿２Ｏ＿３（Ｌａ）催化剂上ＣＯ＋Ｈ＿２和ＣＯ＋Ｈ＿２＋ＣＯ＿２反应体系的反应过程进行了动态跟踪。结果表明，ＣＯ＋Ｈ＿２反应体系中，ＣＯ插入表面－烷氧基的金属－碳键可能是生成碳二以上醇的反应速控步骤；当有ＣＯ＿２存在时，氢的表面解离吸附步骤相对控制了反应的进行。
In this paper,the reaction processes of CO+H2 and CO+H2+CO2 over Cu-ZnO-Al2O3(La) catalyst were traced dynamically by using in situ emission IR technique at the reaction conditions of 280℃ and 0.5MPa. The experimental results showed that the step of CO inseration in the metal-carbon bond of surface alkoxyl might be the rate determining step of OH formation in CO+H2 system,and the dissociative adsorption of H2 could determine the reaction relatively at the presence of CO2.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1996年第3期209-213,共5页
Journal of Fuel Chemistry and Technology
关键词
混合醇
低碳醇
铜催化剂
一氧化碳
加氢
lower alcohols,in situ emission IR,rate determining step,surface-alkoxyl
