【摘要】 采用超声波技术激活钾钠液态低共熔物作为邻二甲苯与1,3-丁二烯烯基化反应合成5-苯甲基-2-戊烯(OTP)的催化剂,考察了催化剂预处理参数、反应温度、原料配比、催化剂用量以及加入助剂用量等因素对催化活性的影响。结果表明,以超声波预处理技术制备钾钠低共熔物催化剂有效提高了催化性能。当超声波频率30 kHz,功率80 W下激活3 h,反应温度150°C,邻二甲苯与1,3-丁二烯原料配比5∶1,原料与催化剂质量比400∶1,可获得最好的催化活性,1,3-丁二烯转化率达到83.16%。当加入助剂四甲基乙二胺(TMEDA)的质量百分数为1%时,可以进一步促进烯基化反应,1,3-丁二烯转化率达到89.4%。更多还原

【Abstract】 Effects of pretreatment of catalysis,reaction temperature,the ratio of the reactants,the substrate-catalyst ratio and the content of the promoter on the reaction properties of NaK catalysts has been studied in a wide range.The sonochemical pretreatment of the NaK eutectic mixture catalyst(resulted) in excellent 1,3-butadiene conversion(up to 83.16%).It was found experimentally that the optimal parameters are ultrasound frequency 30 kHz,insonation time 3 hours,sonication power 80 W,reaction temperature 150 ℃,the ratio of the reactants 5∶1,the substrate-catalyst ratio 400∶1. The introduction of N,N,N′,N′-tetramethylethylenediamine(TMEDA) with the optimum content of 1 % can give rise to a further considerable of 1,3-butadiene conversion(up to 89.4%).更多还原