DIRECT SYNTHESIS OF ORGANIC COMPOUNDS FROM CARSON DIOXIDE BY HYDROTHERMAL PROCESS

在水热条件下，金属Fe和Ni很容易将水和CO_2还原成烃。水中的活化氢与金属表面的活化CO_2反应生成碳氢化合物。确定了上述反应的基本原理。在中性水热条件下产生的烷烃基团（气相）表明该反应通过CO形成根据Fisher-Tropseh反应进行。在酸性条件下，在溶液相中检测到许多羧酸。当使用磁铁矿粉末代替金属时，在溶液相中检测到乙醇。最后一年（2002年），开发了用于工业规模处理的小型流动系统高压釜，并证实了用于非平衡反应研究的可能性。间歇式高压釜可用于平衡反应，适合于理想的基础研究，而流动式高压釜可用于自然模拟实验（地下水流模拟器）和实际工业规模处理的管式消化器研究。这种非平衡反应是典型的复杂系统和非传统科学。在该管式反应器中放置金属铁切削屑，通入HCl溶液和CO_2气体的混合气流，收集管式反应器出口样品，测定羧酸类化合物。在系统的研究计划中，首先，活性氢和CO_2的形成，并在第二阶段合成烃，在下一个阶段，我们发现了选择性的形成有机化合物的水热条件的控制，并在最后一个阶段，我们可以显示出大规模处理的可能性，使用这种流动系统的高压釜。

Water and CO_2 were easily reduced by using metal Fe and Ni under hydrothermal conditions and to form hydrocarbons. The activated hydrogen from water and the activated CO_2 on metal surface reacted each other and to form hydrocarbons. We confirmed the basic principle of above reactions. The produced alkane groups (gaseous phase) under neutral hydrothermal conditions showed this reaction proceed according to a Fisher-Tropseh reaction via CO formation. On acidic conditions, many carboxylic acids were detected in solution phase. When the magnetite powder was used instead of metals, ethanol was detected in solution phase. In final year (2002), the bench scale flow system autoclave for industrial scale treatment were developed and confirmed the possibility in use the research of non-equilibrium reaction. The batch type autoclave can be used for equilibrium reaction and fitted in the ideal basic research, however this flow system autoclave can be used in the natural analogue experiment (simulator of water flow underground) and the tube digester research for the practical industrial scale treatment. This non-equilibrium reaction in a typical complex system and the non-traditional science. In here, the lathe scrap of metallic iron was set in this tube reactor and the mixed flow of HCl solution and CO_2 gas were introduced in this heating tabs and the outlet sample from tube reactor was collect and determined the carboxylic compounds. In systematic research planning, firstly, the activated hydrogen and CO_2 are formed, and hydrocarbons were synthesized at second stage, and at next stage we discovered the selective formation of organic compounds by the control of hydrothermal conditions and at the last stage we could showed the possibility of large scale treatment by using this flow system autoclave.