Abstract
Abstract A novel heterogeneous acid catalyst was prepared by the incorporation of Keggin (H3[PW12O40]) and Preyssler (H14[NaP5W30O110]) type heteropolyacids into the interlayer of a layered silicate Hiroshima University Silicate (HUS)-2 that was grafted with (3-aminopropyl)triethoxysilane. Calcination of the Keggin-type heteropolyacid-incorporated HUS-2 at 400 °C for 6 h removed interlayer aminopropyl groups and considerably increased the BET surface area and the micropore volume to 206 m2 g−1 and 0.08 cm3 g−1, respectively. The Preyssler-type heteropolyacid-incorporated HUS-2 had a BET surface area of 216 m2 g−1 and a micropore volume of 0.09 cm3 g−1. The Keggin-type heteropolyacid-incorporated HUS-2 was found to be active for catalysis of the selective dehydration of ethanol to ethene.
Published Version
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