METHOD FOR PRODUCING LEVULINIC ACID

• Main Authors: MURANAKA YOSUKE, MAE KAZUHIRO, HASEGAWA ISAO, YAMAMOTO YOSHIFUMI, IKUTA JUNYA
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

PROBLEM TO BE SOLVED: To provide a method for producing levulinic acid which is advantageous in industrial production and can improve the yield of levulinic acid.SOLUTION: There is provided a method for producing levulinic acid which comprises: a solubilization step of mixing a raw material containing cellulose and an acid to obtain a first acidic solution of the cellulose; and a hydration step of reducing the acid concentration of the first acidic solution to obtain a second acidic solution and heating the second acidic solution at a temperature higher than the mixing temperature in the solubilization step.SELECTED DRAWING: None 【課題】 工業生産上有利であり、且つ、レブリン酸の収率を向上させることが可能な、レブリン酸の製造方法を提供すること。【解決手段】 セルロースを含む原料と酸とを混合し、上記セルロースの第１の酸性溶液を得る可溶化工程と、上記第１の酸性溶液の酸濃度を下げて第２の酸性溶液を得るとともに、上記第２の酸性溶液を上記可溶化工程における混合温度よりも高い温度で加熱する水和工程と、を備える、レブリン酸の製造方法。【選択図】 なし