摘要
The rare-earth solid superacids-SO 2- 4/TiO 2/La 3+ were prepared by precipitation and impregnation and were characterized by IR,XRD and Hammett indicator.The synthesis of ethyl phenylacetate with ethanol and phenylacetic acid as reactants and rare-earth solid superacid SO 2- 4/TiO 2/La 3+ (La 3+ concentration of the soak solution:0 07mol·L -1 ,the calcination temperature:500℃ and the calcination time:3h)as catalyst was studied.The results showed that the appropriate conditions were as follow:mass of catalyst 1 0g(based on 0 05 mole phenylacetic acid),n(ethanol):n(phentlacetic acid)=4 0∶1 0,reaction time 5 0h.The yield of ethyl phenylacetate was about 89 8%.
The rare-earth solid superacids-SO 2- 4/TiO 2/La 3+ were prepared by precipitation and impregnation and were characterized by IR,XRD and Hammett indicator.The synthesis of ethyl phenylacetate with ethanol and phenylacetic acid as reactants and rare-earth solid superacid SO 2- 4/TiO 2/La 3+ (La 3+ concentration of the soak solution:0 07mol·L -1 ,the calcination temperature:500℃ and the calcination time:3h)as catalyst was studied.The results showed that the appropriate conditions were as follow:mass of catalyst 1 0g(based on 0 05 mole phenylacetic acid),n(ethanol):n(phentlacetic acid)=4 0∶1 0,reaction time 5 0h.The yield of ethyl phenylacetate was about 89 8%.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2002年第6期734-736,共3页
Chemical Research and Application
基金
内蒙古自治区自然科学基金项目 (2 0 0 10 9- 13 )
关键词
稀土固体超强酸
苯乙酸乙酯
催化活性
酯化率
ethyl phenylacetate
rare-earth solid superacid
catalysis activity
the yield of esterification
