In recent years, our research group has been working on the dimethyl ether(DME) synthesis from syngas(CO and H2) and acetic acid synthesis from CH4 and CO2 based on the coal gasification. In the process of DME synthesis, the conventional catalysts are easily deactive. Therefore, the complete liquid phase method had been put forward according to the properties of slurry reactor, and the catalysts have excellent stability; In the acetic acid synthesis, it is found that the catalytic activity of the sol-gel is...