Cellulose decomposition in supercritical water to recover chemicals

超临界水中的纤维素分解以回收化学品

• 批准号: 07455433
• 负责人: AZIRI Tadafumi
• 金额: $ 1.02万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455433/
• 关键词: Supercritical water; Biomass; cellulose; kinetics; mechanism; hydrolysis; オリゴ糖; シミュレーション; 分解; モンテカルロシミュレーション

For the development of a new conversion process of biomass in supercritical water (SCW) to recover chemicals, basic studies on cellulose conversion in SCW were conducted. By using a slurry pomp developed, reaction of cellulose in SCW were studied in detail. In SCW reaction of cellulose, high yield of hydrolysis products was obtained. Kinetics of cellulose hydrolysis were also evaluated. The hydrolysis rate jumped up to a higher level above the critical point. This is the reason for the high yield of hydrolysis products obtained.SCW decomposition experiments of glucose, grycelaldehyde, dihydroxyaceton, cellobiose, cellotriose, cellopentaose in SCW were conducted and the main reaction pathways of cellulose decomposition were elucidated on the basis of the results obtained. Kinetics of each reaction pathways were also evaluated. By using Monte Carlo Simulation method with the rate constants evaluated, the product distribution of the cellulose decomposition could be fairly well explained.

为开发生物质在超临界水中转化为回收化学品的新工艺，开展了超临界水中纤维素转化的基础研究。利用研制的浆料浆料，详细研究了纤维素在超临界水中的反应。在纤维素的SCW反应中，获得了较高的水解产率。并对纤维素酶的降解动力学进行了评价。水解率跃升到临界点以上的较高水平。通过对葡萄糖、纤维素醛、二羟基丙酮、纤维二糖、纤维三糖、纤维五糖在超临界水中的分解实验，阐明了纤维素在超临界水中分解的主要反应途径。并对各反应途径的动力学进行了评价。用蒙特卡罗模拟方法计算了反应速率常数，较好地解释了纤维素分解的产物分布。

项目成果

Bernard Kabymela, Tadafumi Adschiri, Kunio Arai: ""Glucose decomposition in supercritical water"" Ind.Eng.Chem.Res.(in press). (1997)

Bernard Kabymela、Tadafumi Adschiri、Kunio Arai：““超临界水中的葡萄糖分解””Ind.Eng.Chem.Res.（印刷中）。

Bernard Kabymela: "Gryceraldehyde and Dihydroxyaceton decomposition in supereritical water" Industrial and Engineering Chemistry Research. (1997)

Bernard Kabymela：“超临界水中甘油醛和二羟基丙酮的分解”工业和工程化学研究。

Bernard M. Kabymela at al.: "Kinetics of Glucouse Epimerization and Deco mposition in Subcritical and Supercritical Water" Industrial and Engineering Chemistry Reseach. (1997)

Bernard M. Kabymela 等人：“亚临界和超临界水中葡萄糖差向异构化和分解的动力学”工业和工程化学研究。

Bernard Kabymela: "Glucese decomposition in supercritical water" Industrial and Engineering Chemistry Research. (1997)

Bernard Kabymela：“超临界水中的葡萄糖分解”工业和工程化学研究。

Bernard Kabymela, Tadafumi Adschiri, Kunio Arai: ""Gryceraldehyde and Dihydroxyacetone decomposition in supercritical water"" Ind.Eng.Chem.Res.(in press). (1997)

Bernard Kabymela、Tadafumi Adschiri、Kunio Arai：“超临界水中的甘油醛和二羟基丙酮分解”Ind.Eng.Chem.Res.（印刷中）。