摘要
建立SO42-/Nd2O3-ZrO2-Fe2O3三元固体超强酸催化合成乙酸乙酯的工艺.在考察醇酸摩尔比、催化剂用量和反应时间3个单因素对乙酸乙酯转化率影响的基础上,采用正交实验对其工艺进行优化.根据试验数据来分析和预测SO42-/Nd2O3-ZrO2-Fe2O3三元固体超强酸催化合成乙酸乙酯的转化率.通过实验得到SO42-/Nd2O3-ZrO2-Fe2O3三元固体超强酸催化合成乙酸乙酯的最优化条件为:醇酸摩尔比1∶1.4、催化剂用量0.55g和反应时间3h.在此条件下,乙酸的转化率达到98.5%.因此,利用正交实验进行SO42-/Nd2O3-ZrO2-Fe2O3三元固体超强酸催化合成乙酸乙酯的工艺参数的优化是可靠的,可以较好地预测乙酸的转化率.
To establish the synthesis technology of ethyl acetate with the use of ternary solid super acid SO4^2-/Nd2O3_ZrO2_Fe2O3. On the basis of investigating three factors including alkyd mole ratio,catalyst dosage and reaction time,orthogonal tests were further used to optimize the technology parameters. Conversion rate of ethyl acetate using ternary solid super acid SO4^2-/Nd2O3_ZrO2_Fe2O3 as catalyst was analyzed and predicted based on experimental data. Results showed the optimum synthesis conditions were as follows： alkyd mole ratio of 11. 4,catalyst amount of 0. 55 g and reaction time is 3 h. Under these conditions,the conversion rate of acetic has reached 98. 5%. Therefore,when SO4^2-/Nd2O3_ZrO2_Fe2O3 ternary solid super acid was selected as catalyst,orthogonal experiment used to optimize catalytic synthesis conditions of ethyl acetate is feasible and reliable,which can well predicted conversion rate of acetic acid.
出处
《吉林化工学院学报》
CAS
2015年第8期40-42,共3页
Journal of Jilin Institute of Chemical Technology
