摘要
以乙酰乙酸乙酯和乙二醇为原料，环己烷为带水荆，用自制的Bi-capped Keggin型铬钒磷杂多酸为催化荆，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℃回流屎应60min，酯收率可达98．54％,在此条件下，酯收率可达98．54％．
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 H13 PV12 Cr2 O42·21H2O is a good catalyst for the catalytic synthesis of fructone.
出处
《吉首大学学报（自然科学版）》
CAS
2007年第1期110-113,122,共5页
Journal of Jishou University(Natural Sciences Edition)
基金
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)
