Table 3 18O exchange during cyclohexanol dehydration*.

From: Enhancing the catalytic activity of hydronium ions through constrained environments

Catalyst

18 O in the recovered alcohol (%)

Conversion (%)

HBEA

9

19

H3PO4

17

18

  1. *Extent of 18O exchange from H218O (97% isotopic purity) into cyclohexanol during dehydration of unlabelled cyclohexanol (0.30 M in H218O) over HBEA and H3PO4 in aqueous phase at 180 °C.
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