【摘要】 研究了CoMoO4负载Mo-V-Cr-Bi氧化物催化剂上甲烷部分氧化反应,发现反应存在一转折温度,当反应温度低于此温度时,CO是主要产物,而部分氧化产物甲醇的选择性低于20%,而当反应温度高于此温度时,CO的选择性大大降低,而CO2的选择性大大升高,主要产物变为CO2,甲醇的选择性降为0。在O2完全反应的时候,总会有H2生成,特别当反应温度高于转折温度的时候,H2的生成量大大增加。更多还原

【Abstract】 Partial oxidation of methane over CoMoO₄ supported Mo-V-Cr-Bi oxides catalysts were investigated at 5.0MPa and 380～500 ℃.There existed a transition temperature for the product distribution.Below the transition temperature,CO was the predominant product,and selectivity of CH₃OH was less than 20 %.Above the transition temperature,selectivity of CO decreased and selectivity of CO₂ increased sharply,CO₂ became the predominant product and no CH₃OH produced.H₂ can be detected when O₂ was consumed completely,and its production increased greatly above the transition temperature.更多还原