Different catalysts were investigated to synthesize triacetin from acetic acid and glycerol.p-Toluene sulfonic acid(PTSA) was selected as the catalyst for esterification.Subsequently the factors such as the amount of PTSA,reaction time,water continuously separated or unseparated technology and the molar ratio of acetate acid to glycerol were investigated.The experimental results showed: when the amount of catalyst was 5% mass of glycerol,the content of triacetin in the product reached 96% in 3.5 h with the ...