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首页> 外文期刊>RSC Advances >Integrated production of furfural and levulinic acid from corncob in a one-pot batch reaction incorporating distillation using step temperature profiling
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Integrated production of furfural and levulinic acid from corncob in a one-pot batch reaction incorporating distillation using step temperature profiling

机译：通过一步法温度分布蒸馏的一锅式间歇反应，由玉米芯整合生产糠醛和乙酰丙酸

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Furfural and levulinic acid (LA) are potential major renewable platform chemicals for producing biochemicals and biofuels. In this study, integrated conversion of corncob to furfural and LA was carried out in a one-pot system using p-toluenesulfonic acid (p-TsOH) and step temperature profiling. A batch reaction incorporating distillation (BRD) resulted in a good furfural production yield of 61.6% based on the corncob xylan content for the hydrolysis conditions tested. Distillation not only reduced furfural loss due to side reactions to humins, but also resulted in a fairly pure and concentrated furfural solution. At the end of the first distillation step, the reaction temperature was increased to convert hexoses into LA with a maximal production yield of 61.3 ± 7.8% based on corncob glucan content. LA was extracted with good yield as LA–ester using low-cost alcohols and then phase separated to recycle alcohols and p-TsOH. Good recyclability and reusability of p-TsOH and alcohols were demonstrated.
机译：糠醛和乙酰丙酸（LA）是用于生产生化试剂和生物燃料的潜在主要可再生平台化学品。在这项研究中，使用 p -甲苯磺酸（ p -TsOH）和一步温度分析在一个一锅系统中将玉米芯合成糠醛和LA。在测试的水解条件下，基于玉米芯木聚糖含量，分批加入蒸馏（BRD）的反应产生了良好的糠醛产率，为61.6％。蒸馏不仅减少了因腐殖质产生的副反应而引起的糠醛损失，而且还产生了纯度较高的糠醛溶液。在第一蒸馏步骤结束时，提高反应温度以将己糖转化为LA，基于玉米芯葡聚糖的含量，其最大产率为61.3±7.8％。用低成本的醇将LA提取为LA酯，收率高，然后进行相分离以回收醇和 p -TsOH。证明了 p -TsOH和醇类具有良好的可回收性和可重复使用性。

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