Abstract A series of Bronsted acidic ionic liquid catalysts was synthesized by anchoring 1-(3-sulfopropyl)pyridinium trifluoromethanesulfonate onto the stable core-shell micelles, which was formed by cross-linking various chain length ratios PS-b-P4VP in toluene with 1,4-dibromobutane. These catalysts display excellent catalytic activity in the esterification or transesterification of palmitic acid or glycerol tripalmitate with methanol or ethanol to synthesize the biodiesel (yield > 99%) in the presence of 4 mol% catalyst loading. Furthermore, the biodiesel yield was maintained about 90% even with a water content of 10 wt% corresponding to the total weight of reaction system. More importantly, these supported catalysts with core-shell structure could be recycled for 5-6 times (5 cycles: yield 89.3%, 6 cycles: yield 84%) only by simple centrifugation without appreciating activity decrease.

中文翻译：

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用于合成生物柴油的明确定义的核壳纳米结构嵌段共聚物负载的可回收布朗斯台德酸性离子液体催化剂

摘要 通过将三氟甲磺酸 1-(3-磺丙基)吡啶鎓锚定在稳定的核壳胶束上，合成了一系列布朗斯台德酸性离子液体催化剂，该胶束是通过在甲苯中交联不同链长比例的 PS-b-P4VP 与 1 ,4-二溴丁烷。这些催化剂在棕榈酸或三棕榈酸甘油酯与甲醇或乙醇的酯化或酯交换反应中显示出优异的催化活性，以在 4 mol% 催化剂负载下合成生物柴油（产率 > 99%）。此外，即使在对应于反应体系总重量的 10 wt% 的水含量下，生物柴油的产率也保持在 90% 左右。更重要的是，这些具有核壳结构的负载型催化剂可以循环使用5-6次（5个循环：产率89.3%，6个循环：