【摘 要】
：
以仲丁基溴(RBr)、升华硫、九水硫化钠为原料,采用自制的SiO2-g-PS负载季铵盐为三相相转移催化剂合成二仲丁基二硫醚。通过正交实验得到最佳工艺条件为:n(Na2S)∶n(RBr)=1∶0
【机 构】
：
河南化工职业学院,郑州大学化工与能源学院,
论文部分内容阅读
以仲丁基溴(RBr)、升华硫、九水硫化钠为原料,采用自制的SiO2-g-PS负载季铵盐为三相相转移催化剂合成二仲丁基二硫醚。通过正交实验得到最佳工艺条件为:n(Na2S)∶n(RBr)=1∶0.8,催化剂质量分数为0.75%,反应温度为30℃,反应时间为9 h。在该条件下重复3次实验,平均收率为57.65%。与其他三相催化剂相比,该催化剂催化效果最好,且重复使用6次活性并未明显降低,产物结构经1HNMR和FTIR确证。
Di-sec-butyl disulfide was synthesized by the reaction of sec-butyl bromide (RBr), sublimation sulfur and sodium sulfide nonahydrate, and self-made SiO2-g-PS supported quaternary ammonium salt as a three-phase phase transfer catalyst. The optimum technological conditions were as follows: n (Na2S): n (RBr) = 1: 0.8, catalyst mass fraction 0.75%, reaction temperature 30 ℃ and reaction time 9 h. Under these conditions, the experiment was repeated 3 times with an average yield of 57.65%. Compared with other three-phase catalysts, the catalyst showed the best catalytic activity and the activity of 6-times repeated use did not decrease obviously. The product structure was confirmed by 1HNMR and FTIR.
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