Catalytic Performance of Divanadium-Substituted Molybdophosphate Acid, H₅PMo₁₀V₂O₄₀, in Liquid-Phase Esterification of Hexanoic Acid

Abstract

Divanadium-substituted molybdophosphate acid, H₅PMo₁₀V₂O₄₀, efficiently catalyzes the synthesis of ethylhexanoate from hexanoic acid and ethanol at reflux temperature and under solventless conditions. Comparison of H₅PMo₁₀V₂O₄₀ with the other heteropolyacids showed that this catalyst gives the highest total yield of ethylhexanoate. The effects of the molar ratio of acid:alcohol, reaction times, and temperatures were studied.

Keywords:

• Catalyst
• esterification
• ethylhexanoate
• heteropolyacid
• hexanoic acid
• vanadium (V)-substituted heteropolymolybdates

Notes

^a Yields determined by GC/MS.