中文摘要乙酸正丁酯的合成有许多种方法,有对甲苯磺酸、钨钛杂多酸盐、浓H2S04一KCr207、改性煤基活性炭、固体超强酸、浓硫酸等作催化剂的合成。本实验以浓硫酸作催化剂,以冰乙酸和正丁醇为原料合成乙酸正丁酯,考察醇与酸物质的量比、反应时间、催化剂用量等因素对酯化率的影响。得出反应的最佳条件为:V(正丁醇):V(冰乙酸)=:,催化剂用量为冰乙酸,质量的3%,反应温度124℃~126℃,反应时间45min左右,用浓硫酸作催化剂时,乙酸正丁酯的收率为69%~76%。关键词:乙酸正丁酯;酯化反应;催化剂ABSTRACTSynthesisofbutylacetateTherearemanywaysforacid,titaniumtungstenheteropolyacid,concentratedH2S04—KCr207,modifiedcoal-basedactivatedcarbon,solidsuperacid,,concentratedsulfuricacidascatalysttoaceticacidandbutanoltobutylacetatewassynthesizedtostudyalcoholandacidmolarratio,reactiontime,:V(n-butylalcohol):V(aceticacid)=:,catalystandaceticacid,with3%,reactiontemperature124℃~126℃,reaction45mintimearound,withconcentratedsulfuricacidcatalystandbutylacetatetheyieldwas69%~76%.Keywords:butylacetate;esterification;.............................................................................................................................................................................................................................................................................................................
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