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首页> 外文期刊>RSC Advances >Preparation of functionalized castor oil derivatives with tunable physical properties using heterogeneous acid and base catalysts
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Preparation of functionalized castor oil derivatives with tunable physical properties using heterogeneous acid and base catalysts

机译：使用异质酸和碱催化剂的可调谐物理性能的官能化蓖麻油衍生物的制备

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Functionalized castor oil derivatives namely ring-opened glyceryl ricinoleates, epoxy alkyl ricinoleates, and ring-opened alkyl ricinoleates were successfully prepared through two reaction chemistry viz., ring opening and transesterification using epoxidized castor oil (ECO) as a raw material. Amberlyst 15, the most active catalyst among several acid catalysts screened, showed a maximum conversion of 82% for ring opening of ECO with methanol. In another chemistry, 91% yield of epoxy methyl ricinoleate was achieved through transesterification of ECO with methanol using CaAl-layered double hydroxide (LDH) derived oxides as base catalyst. The scope is extendable to many nucleophiles and alcohols for both reactions respectively. Ring-opened alkyl ricinoleates were prepared both in two-pot and one-pot reactions using both acid and base catalysts together. The catalysts were recyclable and were successfully scaled at 25 g. The physical properties of these castor-based derivatives bestow the opportunity to design tailor-made materials suiting industrial needs.
机译：官能化蓖麻油衍生物即通过两种反应化学致Ziz成功制备环形甘油糖醇，环氧烷基蓖麻油酸盐，环氧烷基蓖麻油酸，并使用环氧化蓖麻油（ECO）作为原料的环开口和酯交换。 Amberlyst 15，筛选几种酸催化剂中最活性的催化剂，显示出82％的eCO与甲醇的最大转化率为82％。在另一种化学中，通过使用甲醇使用甲醇的双氢氧化物（LDH）衍生的氧化物作为基础催化剂，通过eCO酯交换来实现91％的环氧甲基蓖麻原酸盐。范围可分别对许多反应的许多亲核试剂和醇。使用两罐和碱催化剂一起制备环形烷基蓖麻油酸盐。催化剂可再循环并成功地以25g缩放。基于蓖麻的衍生品的物理性质赋予了设计适合工业需求的量身定制的材料的机会。

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