An Acidic Two-Step Hydrothermal Process To Enhance Acetic Acid Production from Carbohydrate Biomass

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• 作者：Yan Fang ; Xu Zeng ; Peng Yan ; Zhenzi Jing ; Fangming Jin
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：March 28, 2012
• 年：2012
• 卷：51
• 期：12
• 页码：4759-4763
• 全文大小：243K
• 年卷期：v.51,no.12(March 28, 2012)
• ISSN：1520-5045

文摘

An acidic two-step hydrothermal process to improve acetic acid production was investigated. In the first-step reaction, levulinic acid is formed in the presence of an acid catalyst. In the second-step reaction, the levulinic acid is converted into acetic acid via oxidation with newly supplied oxygen. The acetic acid yield from this two-step process was much higher than that without the acid catalysts in the first step. The acetic acid yield reached 23% with a purity of 47% from glucose and 26% with a purity of 52% from fructose. These yields were achieved at a reaction temperature of 523 K, a reaction time of 300 s, and pH 0.5 with HCl as an acid catalyst for the first step and at a reaction temperature of 523 K, a reaction time of 60 s, and an oxygen supply of 100% for the second step.