Abstract
The title ether was synthesized using a batch reactor at 70–90°C and 1.6 MPa. The ion-exchange resins Amberlyst 15, Amberlyst 35 and Purolite CT275, and HZSM-5 zeolites with a SiO 2/Al 2O 3 ratio between 28 and 120 were used as catalysts. IPTBE synthesis rapidly reaches chemical equilibrium in the presence of resins with selectivities of 95–97%, diisobutene being the main byproduct. HZSM-5 zeolites are less active and selective than resin catalysts. Resins, especially Amberlyst 35, are suitable catalysts for obtaining IPTBE industrially.
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