| 摘要 |
<p>A process for producing dimethyl ether from a gaseous mixture comprising carbon monoxide, hydrogen and/or steam, and optionally further carbon dioxide, wherein use is made of either a catalyst prepared by pulverizing a catalytic mixture comprising at least zinc oxide, copper or chromium oxide, and aluminum oxide, compacting the mixture on a high-pressure press, and again pulverizing the compacted mixture, or a catalytic mixture comprising at least zinc oxide, copper oxide and alumina in the form of a slurry suspended in a solvent. This process gives dimethyl ether in a high yield, allows a high conversion of water formed by the reaction into hydrogen, and is free from the problem of clogging caused by the catalyst, and no mechanical strength is required of the catalyst. The process has further advantages such that the carbon monoxide to hydrogen ratio can be widely varied, that the reaction can be conducted even in the presence of carbon dioxide with high concentration, and impurities and catalyst poison little affect the reaction.</p> |
