铬取代磷钒杂多酸催化合成苹果酯

journal6 ›› 2007, Vol. 28 ›› Issue (1): 110-113.

铬取代磷钒杂多酸催化合成苹果酯

(1.吉首大学化学化工学院,湖南吉首 416000；2.中南大学化学化工学院,湖南长沙 410083)

出版日期:2007-01-25 发布日期:2012-06-19
作者简介:刘文萍(1973-),女,硕士,吉首大学化学化工学院讲师,主要从事催化材料和能源材料研究.
基金资助:
国家自然科学基金资助项目(29843002)；中国博士后科学基金资助项目(2005037700)；湖南省教育厅优秀青年项目(04B016)

Catalytic Synthesis of Fructone with Cr-Doped P-V Heteropolyacid

(1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China；2.College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)

Online:2007-01-25 Published:2012-06-19

摘要/Abstract

摘要：以乙酰乙酸乙酯和乙二醇为原料，环己烷为带水剂，用自制的Bi-capped Keggin型铬钒磷杂多酸为催化剂，合成了苹果酯.探讨了催化剂用量、原料配比、带水剂用量和反应时间对产品收率的影响，并用多种手段对产品做了检测分析.得到合成该酯的最佳工艺条件为:n(乙酰乙酸乙酯)/n(乙二醇)=1∶2，催化剂用量为反应物料总质量的1.0%，环己烷做带水剂，在反应温度80～104　℃回流反应60　min，酯收率可达98.54%.在此条件下，酯收率可达98.54%.

关键词： 苹果酯, Bi-capped Keggin型杂多酸, 催化剂

Abstract: Cr-doped bi-capped Keggin P-V heteropolyacid(H₁₃PV₁₂Cr₂O₄₂·21H₂O) was synthesized and used as catalyst for the synthesis of fructone.The effects of reaction conditions were investigated.The product was characterized and analyzed by FT-IR.The most suitable conditions for the reaction are as follows: n(ethyl acetoacetate)/n (glycol) is 1/2,mass ratio of catalyst to reactant 1.0%,reaction temperature 80～104　℃ and reaction time 60 min.Under these conditions,yield of fructone could reach 98.54%,suggesting that H₁₃PV₁₂Cr₂O₄₂·21H₂O is a good catalyst for the catalytic synthesis of fructone.

Key words: fructone, Bi-capped Keggin type heteropolyacid, catalyst

刘文萍, 何则强, 熊利芝, 吴显明, 陈上. 铬取代磷钒杂多酸催化合成苹果酯[J]. journal6, 2007, 28(1): 110-113.

LIU Wen-Ping, HE Ze-Qiang, XIONG Li-Zhi, WU Xian-Ming, CHEN Shang. Catalytic Synthesis of Fructone with Cr-Doped P-V Heteropolyacid[J]. journal6, 2007, 28(1): 110-113.

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