负载型纳米催化剂催化合成丁酸苄酯的性能

用水热法合成磁性纳米Fe3O4，通过浸渍法和超声法制得S2O8^2-／Fe3O4负载型磁性纳米催化剂，进而催化合成丁酸苄酯，研究了催化剂的负载量、活化温度对反应的影响，讨论了催化剂回收和重复利用等性能。结果表明，采用浸渍法合成的负载型催化剂催化合成丁酸苄酯，酯化率达85．6％，粗产品纯度达94．1％；采用超声法制备的催化剂在选择性上则显示出较大的优势。

Reaction Property Research of Magnetic Loaded Nano-Catalyst to Synthesized Benzyl Butyrate

Magnetic nano-Fe3O4 was prepared by hydrothermal method which was further to synthesis S3O6^2-/Fe3O4, a magnetic nano- catalyst prepared by impregnation and ultrasonic method. Benzyl butyrate was catalytic synthesized with S2O8^2-/Fe3O4, the influences of the loaded amount over the catalyst, activation temperature on the reaction were researched, and the recovery and reuse of the catalyst were discussed. The results indicate the esterification rate of the synthesized reaction by impregnation method is 85. 6%, the purity of the product is 94. 1%, while the selectivity of the catalyst obtained by ultrasonic method have an advantage over it obtained by impregnation method.