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作 者:王英磊[1] 李文欢 耿孝彬 李津[1] 谢英男[1] WANG Ying-lei;LI Wen-huan;GENG Xiao-bin;LI Jin;XIE Ying-nan(School of Biological and Chemical Engineering,Nanyang Institute of Technology,Nanyang,Henan 473004,China)
机构地区:[1]南阳理工学院生物与化学工程学院,河南南阳473004
出 处:《日用化学工业》2020年第10期693-697,共5页China Surfactant Detergent & Cosmetics
基 金:河南省科技攻关项目(182102310601)。
摘 要:以冰乙酸和异戊醇为原料,采用低共熔溶剂氯化胆碱-氯化锌作为催化剂合成乙酸异戊酯,目标产物经折射率测定,红外光谱和核磁共振氢谱表征。考察了反应物配比、低共熔溶剂用量、反应温度、反应时间等因素对乙酸异戊酯合成的影响。结果表明,较佳合成条件为:酸醇摩尔比1.2∶1,氯化胆碱-氯化锌用量2.0 g,反应温度110℃,反应时间3.0 h,此时,乙酸异戊酯的收率可达93%。同时,氯化胆碱-氯化锌回收利用5次产品收率仍然可达85%。Isoamyl acetate was synthesized by using acetic acid and isoamyl alcohol as raw materials,and deep eutectic solvent choline chloride-zinc chloride as catalyst.The target product was measured by refractive index,and characterized by FT-IR and 1H NMR.The effects of reactant ratio,deep eutectic solvent dosage,reaction temperature and reaction time on the yield of isoamyl acetate were studied.Results showed that the yield of isoamyl acetate can reach 93%when the molar ratio of acetic acid to isoamyl alcohol is 1.2∶1,the dosage of choline chloride-zinc chloride is 2.0 g,the reaction temperature is 110℃and the reaction time is 3.0 h.In addition,choline chloride-zinc chloride was recovered and recycled for five times,and the product yield could still reach 85%.
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