摘要
研究了以磁性纳米固体超强酸SO42-/TiO2为催化剂,以二甲苯和苯乙烯为原料合成二芳基乙烷的反应。探讨了固体超强酸制备过程中浸泡液的浓度、焙烧温度对二芳基乙烷产率的影响。结果表明,硫酸的浓度为1.0 mol/L,焙烧温度为550℃制得的催化剂合成二芳基乙烷催化活性最好;在原料苯乙烯与二甲苯摩尔比为1∶7.5,催化剂用量为1.5%(总投料质量百分比),反应时间为3 h,反应温度140℃时,产率可达94.5%,比浓硫酸催化产率提高了25%左右,为实现二芳基乙烷的绿色生产技术提供了依据。
The synthesis of diphenylethylane was studied by using magnetic nanograde SO4^2-/TiO2 solid super acid as catalyst with styrene and xytol as materials. The factors such as the diplye concentration of H2SO4 and the baking temperature which influence the yield of diphenylethylane were also studied. The results showed that the optimal conditions of the preparation of the catalyst were as follows： the diplye concentration of H2SO4 was 1.0 mol/L, the baking temperature was 550℃. The yield of diphenylethylane could reach to 94.5% when the molar ratio of styrene to xylol was 1：7.5 ,the reaction temperature was 140℃ and reaction time was 3 h, which was improved by 25 % than that of dense sulfur acid as catalyst, providing theory references to the green production of diphenylethylane.
出处
《应用化工》
CAS
CSCD
2009年第6期823-826,835,共5页
Applied Chemical Industry
基金
山东省教育厅资助课题(JOOC54)
