大众科技
大衆科技
대음과기
DAZHONG KEJI
2011年
8期
199-200,204
,共3页
苯甲酸正丁酯%制备%教学实验
苯甲痠正丁酯%製備%教學實驗
분갑산정정지%제비%교학실험
n-butyl benzoate%preparation%teaching experiment
考察由苯甲酸与正丁醇进行酯化的反应用于有机实验教学案例的可行性，探讨了催化剂用量、原料配比和反应时间对产品收率的影响，同时对工艺条件的重现性和催化剂的反复使用性能进行考察，结果表明，该实验方案时间短且操作简单，满足有机化学实验教学的要求，完全可用于代替苯甲酸乙酯的制备实验。
攷察由苯甲痠與正丁醇進行酯化的反應用于有機實驗教學案例的可行性，探討瞭催化劑用量、原料配比和反應時間對產品收率的影響，同時對工藝條件的重現性和催化劑的反複使用性能進行攷察，結果錶明，該實驗方案時間短且操作簡單，滿足有機化學實驗教學的要求，完全可用于代替苯甲痠乙酯的製備實驗。
고찰유분갑산여정정순진행지화적반응용우유궤실험교학안례적가행성，탐토료최화제용량、원료배비화반응시간대산품수솔적영향，동시대공예조건적중현성화최화제적반복사용성능진행고찰，결과표명，해실험방안시간단차조작간단，만족유궤화학실험교학적요구，완전가용우대체분갑산을지적제비실험。
This paper describes a preparation experiment of n-butyl benzoate from benzoic acid and n-butanol, and its feasibility using in organic teaching experiment. The effect of factors on the reaction was examined and the optimized condition was established. The experimental reproducibility of process conditions and the reutilization of catalysis involved were tested. Optimum conditions are as follows： n（n-butanol）：n（benzoic acid）=1.5-2：1; the optimal dosages of strong-acid-type cation-exchange-resin of styrene, 3g; the reaction time, 60 min; and its average yield, over 80%. This preparation experiment meets the organic teaching experiment and can completely replace the preparation experiment of ethyl benzoate because its shorter reaction time and easy operation.
