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Sustainable separation of bio-based cadaverine based on carbon dioxide capture by forming carbamate

机译:基于二氧化碳捕获形成氨基甲酸酯的生物基野生胺的可持续分离

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Bio-based cadaverine, manufactured by the decarboxylation of L -lysine, is an important raw material. However, the extractive-distillation separation and purification of cadaverine from bioconversion fluids require high energy consumption and leads to the loss of self-released carbon dioxide during the decarboxylation of L -lysine. This study focuses on the green and sustainable separation of bio-based cadaverine based on the capture of self-released carbon dioxide by cadaverine forming carbamate. Results showed that granular-activated carbon JK1 shows the best decolorization efficiency and achieves a higher cadaverine yield. After three times of solventing-out crystallization, refined cadaverine carbamate with 99.1% purity and total 57.48% yield was obtained. It was also found that the refined cadaverine carbamate consists of mixed crystals having numerous structural forms that can easily dissociate carbon dioxide. Furthermore, the amine carbamate strategy may be of great value for the development of a green and sustainable separation mode of bio-based amines and carbon dioxide capture.
机译:由L-烯酮的脱羧制造的生物基野兔是重要的原料。然而,从生物转化液中的尸胺的萃取蒸馏分离和纯化需要高能量消耗,并导致在L-alysine的脱羧过程中自释二氧化碳的损失。本研究侧重于基于生物基尸体的绿色和可持续分离,基于尸体形成氨基甲酸酯的自释二氧化碳捕获。结果表明,颗粒状活性炭JK1显示了最佳的脱色效率,实现了更高的尸鼠产量。在三次溶剂输出结晶后,得到99.1%纯度的精制野牛氨基甲酸酯,得到总约57.48%的产率。还发现精制的野兔氨基甲酸酯由具有众多结构形式的混合晶体组成,可以容易地解离二氧化碳。此外,胺氨基甲酸酯策略对于开发生物基胺和二氧化碳捕获的绿色和可持续分离模式的发展可能具有很大的价值。

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