Catalytic synthesis of n-butyl p-hydroxybenzoate by using composite inorganic salts catalyst

In this paper, it studies dosage of composite inorganic salts catalyst, n-butyl alcohol dosage and response time, with admixture of select catalytic synthesis of n-butyl p-hydroxybenzoate and other factors on the yield effects under conditions of water combined with composite inorganic salts catalyst, n-butyl alcohol and p-hydroxybenzoic acid by high-yield synthesis of n-butyl p-hydroxybenzoate. Experimental results demonstrate that ester yields was up to 93.32% for the best conditions, when n-butyl alcohol:p-hydroxybenzoic acid mole ratio of 0.05∶0.12 and composite inorganic salts is n(Fe2(SO4)3)∶n(K2SO4)= 3.5∶1, 6m L reaction returning water, reaction time 240 min.