阎子峰,薛锦珍.SiO2担载的过渡金属催化剂上甲烷直接羰基化反应[J].分子催化编辑部,1996,(6):440-444
SiO2担载的过渡金属催化剂上甲烷直接羰基化反应
Study of Direct Carbonylation of Methane on Silica Supported Transition Metal Catalysts
  
DOI:
中文关键词:  羰基化 金属催化剂 甲烷 乙醛 氧化硅
英文关键词:
基金项目:
阎子峰  薛锦珍
中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室
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中文摘要:
      用程序升温脉冲反应技术,较系统地考察了担载型过渡金属(Fe、Co、Ni)催化剂上,甲烷直接羰基化制乙醛的反应,研究发现,通过采用总反应分解法操作后,能够克服甲烷直接羰基化反应的热力学限制,将总反应转化为两个可在较温和条件下发生的反应,首次实现了CH4+CO=CH3CHO的反应,即首先进行甲烷的分解,然后引入CO使其与甲烷分解所产生的表面物种直接反应生成乙醛,还探讨了甲烷吸附条件、CO甲烷分解所产生
英文摘要:
      Direct carbonylation of methane on silica supported transition metal catalysts was preliminarily investigated by using the temperature programmed pulse reaction (TPPR). An important approach is to split the overall reaction into two reaction steps occurring under moderate conditions. Methane decomposition on transition metal surface was first employed to form surface carbonaceous species. Then the CO syn gas(95%CO+5%H 2) was introduced to interact with surface carbonaceous species to produce aldehyde. In such a two step route the thermodynamic limitations can be overcome and the direct carbonylation of methane may be effectively achieved. This reaction is an attractively novel route for utilization of methane. Optimization of this process would result in a new route for effective ultilization of methane.
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