Catalytic activity of the dehydration catalysts for dimethyl ether synthesis

Catalytic activity and surface properties of the mixed catalysts for the dimethyl ether synthesis from CO and H₂ are presented in paper. Catalytic experiments were carried out in flow reactor at 3 MPa and temperature interval 200-260°C. As a catalyst for methanol synthesis it was used CuO/ZnO/Al₂O₃ sample and as catalyst for hydration of methanol was used zeolite. It was established that mixture of the composition 13% CuO/27 % ZnO/60% Al₂O₃ and zeolite HZSM-5 (silicate module - ratio SiO₂/Al₂O₃ = 30) has high activity and show the yield at about 40%. It is proposed influence of the catalysts nature on the catalytic properties.