| 摘要 |
A mixed catalyst for producing dimethylether, comprising a methanol synthesizing catalyst containing Zr, Ca or an oxide thereof, and a dehydrating catalyst, is provided to optionally produce dimethylether at a high carbon monoxide conversion ratio from a mixed gas containing hydrogen, carbon monoxide and carbon dioxide, a preparation method of the mixed catalyst for producing dimethylether is provided, and a method for producing dimethylether using the mixed catalyst for producing dimethylether is provided. A mixed catalyst for producing dimethylether comprises: a methanol synthesizing catalyst prepared as a metal nitrate solution or a sodium carbonate solution by adding a promoter consisting of at least one component selected from Zr, Ca, and an oxide thereof to a basic catalyst of a copper metal nitrate solution, a zinc metal nitrate solution, or an aluminum metal nitrate solution; and a dehydrating catalyst prepared by mixing aluminum phosphate with gamma alumina, wherein a ratio of the basic catalyst to the promoter in the methanol synthesizing catalyst is 1:11.5 to less than 19, a ratio of the aluminum phosphate to the gamma alumina in the dehydrating catalyst is 1, and the methanol synthesizing catalyst and the dehydrating catalyst are mixed at a ratio of 1:0.4 to 0.65. A method for producing dimethylether comprises reacting a syngas containing hydrogen, carbon monoxide and carbon dioxide at a temperature of 200 to 350 deg.C, a pressure of 10 to 80 atmospheric pressures, and a space velocity of 3,000 to 10,000 h^-1 in the presence of the mixed catalyst for producing dimethylether. |
