Synthesis of butyl hexanoate catalyzed by solid acid catalyst

Butyl hexanoate was synthesized by hexanoic acid and n-butanol,using solid acid Zr(SO4)2/SiO2 as catalyst.Effects of n(hexanoic acid)∶n(n-butanol),catalyst dosage and reaction time on the esterification rate were discussed by orthogonal experiment design,which showed that the influence order of esterification rate was:catalyst dosagereaction timen(hexanoic acid)∶n(n-butanol).The optimum technical conditions were as follow:n(hexanoic acid)∶n(n-butanol)=1∶3,mass fraction of Zr(SO4)2/SiO2 in hexanoic acid 4.0% and reaction time 2.5h,the esterification rate was 99.6%.