Cellulose Reactivity in Supercritical Methanol in the Presence of Solid Acid Catalysts: Direct Synthesis of Methyl-levulinate

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• 作者：Franck Rataboul ; Nadine Essayem
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：January 19, 2011
• 年：2011
• 卷：50
• 期：2
• 页码：799-805
• 全文大小：222K
• 年卷期：v.50,no.2(January 19, 2011)
• ISSN：1520-5045

文摘

Supercritical MeOH and MeOH鈭扝₂O (90/10) mixtures were used as reaction media for one-pot dissolution鈭抍onversion of microcrystalline cellulose. In the absence of catalyst, the cellulose dissolution was almost complete under supercritical conditions (300 掳C/10 MPa/1 min) but relative low amounts of value-added chemicals were obtained. Addition of solid acid catalysts such as Cs_xH_3鈭?i>xPW₁₂O₄₀ or sulfated zirconia led in the same conditions to formation of valuable methyl-levulinate in remarkable yields close to 20%.