| 摘要 |
<p>PURPOSE: To easily produce diisopropyl ether useful as a base material for high-octane gasoline in high efficiency at a low cost by reacting water with propylene at a specific ratio in the presence of a specific catalyst. CONSTITUTION: The objective compound is produced by reacting (A) water with (B) propylene at a molar ratio (B/A) of 0.5-50 in the presence of (C) a catalyst composed of a water-saturated acidic ion exchange resin catalyst (WR) and a dry-type acidic ion exchange resin catalyst (DR). The component C is preferably a strongly acidic sulfonic acid-type acidic ion exchange resin, the WR has a water content of >=30%, especially >=55% and a base concentration of 2.0-4.0meq/g, especially 2.3-2.6meq/g. The DR has a watery content of <=10%, especially <=1.5% and the base concentration of 4.0-6.0meq/g, especially 4.7-5.0meq/g. The reaction is carried out at 30-200 deg.C, especially 90-140 deg.C under normal pressure to 150kg/cm<2> pressure, especially 10-100kg/cm<2> at a raw material feeding rate (LHSV) of 0.01-30hr<-1> , especially 0.1-10hr<-1> based on the component B.</p> |
