| 纤维素在近临界水中的分解动力学和产物分布 |
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| 引用本文： | 吕秀阳,迫田章义,铃木基之.纤维素在近临界水中的分解动力学和产物分布[J].化工学报,2001,52(6):556-559. |
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| 作者姓名： | 吕秀阳 迫田章义 铃木基之 |
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| 作者单位： | 浙江大学材料与化工学院; 东京大学生产技术研究所 |
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| 基金项目： | 浙江省自然科学基金 !(J990 0 2 )，教育部留学回国人员科研启动基金资助项目&& |
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| 摘 要： | 引 言纤维素含量约占 50 %的生物质资源 ,是非常有应用前景的可再生资源 .目前用于大规模处理生物质资源的方法有酸水解、热分解和水蒸气蒸爆等 .酸水解的目标是最大限度地获得单糖 ,它又可发为浓酸水角1] 与稀酸水解2 ] .酸水解具有以下缺点 :①反应速度较慢 (最大 0 .1ｍｉｎ- 1) ;②反应器腐蚀严重 ;③需国收酸 (浓酸水解 )以及废水处理等 .热分解的目标是生成燃料 ,Ａｎｔａｌ等3] 对此进行大量的研究 ,此法设备与工艺均较简单 ,但存在着产品价值较低、污染严重等问题 .水蒸气蒸爆因水解率低 ,一般只作为预处理技术4 ] .另外还有人…
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| 关 键 词： | 近临界水 纤维素 分解动力学 产物分布 |
| 文章编号： | 0438-1157(2001)06-0556-04 |
| 修稿时间： | 2000年6月12日 |
KINETICS AND PRODUCT DISTRIBUTIONS OF CELLULOSE DECOMPOSITION IN NEAR CRITICAL WATER |
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| LV Xiuyang,Sakoda Akiyoshi,Suzuki Motoyuki.KINETICS AND PRODUCT DISTRIBUTIONS OF CELLULOSE DECOMPOSITION IN NEAR CRITICAL WATER[J].Journal of Chemical Industry and Engineering(China),2001,52(6):556-559. |
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| Authors: | LV Xiuyang Sakoda Akiyoshi Suzuki Motoyuki |
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| Abstract: | Knetics and product distributions of cellulose decomposition in near-critical water were studied with a continuous flow-type apparatus for supercritical and near-critical water reactions.The experimental temperature range was from 513K to 583K and residence time from 0.5min to 1.6min.The effects of temperature and residence time on cellulose residue were demonstrated.The apparent actiation energy evaluated was 147kJ·mol -1 .In addition,the effects of temperature and residence time on the yield distributions of wter soluble oligomers,glucose and levulose,pyruvic aldehyde,5-hydroxymethyl furfural,furfural were described in detail.The experimental results showed that selective decomposition of cellulose in near critical water was possible.
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| Keywords: | near critical water cellulose decomposition kinetics product distribution |
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