Title: Catalytic synthesis of hexyl by nano H_3PW_(12)O_(40)/SiO_2 heteropoly acid
Abstract: The effect of ratio of raw materials,amount of catalyst,reaction time,reaction temperature on esterification and the situation of catalyst reuse were investigated with nano-silica as carrier,acetic acid and n-hexanol as raw materials,by sol-gel method supported phosphotungstic acid,nano H3PW12O40/SiO2 heteropoly acid as catalyst.Experiment showed that the nano H3PW12O40/SiO2 was the good catalyst for synthesis of hexyl acetate.The optimal conditions were as follows:catalyst amount 2.5% of total amount of acid and alcohol,molar ratio of acid to alcohol 1 ∶ 1.4,reaction time 1 h,temperature 130 ℃.The yield was up to 89.72%.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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